《USACO》题单

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1125, 1307, 2606, 2173, 2273, 2337

《USACO》题单

章节 1. 2000至2011OPEN

进行中

题目 尝试 AC 难度
P2263   *【宽搜】玉米迷宫[USACO11OPEN] Corn Maze S 114 31 6
lg3024   【模板】威佐夫博弈 /[USACO11OPEN] Cow Checkers S 57 19 6
lg3025   【模拟】还原密码[USACO11OPEN] Forgotten Password S 31 18 4
P2266   *【并查集】学习语言[USACO11OPEN] Learning Languages S 109 28 7
P4442   E44*【单调队列】连续长度不超过m个的最大总和[USACO11OPEN] Mowing the Lawn G 71 26 5
P2268   *【递归】所有点度数为奇[USACO11OPEN] Odd degrees G 78 17 7
P2872   【动态规划（树形DP + 斜率优化，慎做，超级难）】焊接 [USACO11OPEN] Soldering G 108 4 10
P2270   【LCA练习】[USACO11MAR] Meeting Place S 12 6 9
P2271   *【最短路练习】[USACO11MAR] Package Delivery S 13 9 7
P2272   *【计算几何：四点中心对称】[USACO11MAR] Bovine Bridge Battle S 3 3 10
P2273   *【二分】矩阵尽量平均分块[USACO11MAR] Brownie Slicing G 1 1 10
P2835   【递归+贪心】树上装饰[USACO11MAR] Tree Decoration G 36 16 5
lg3014   【模拟】康托展开及逆运算[USACO11FEB] Cow Line S 8 3 10
lg3015   *【栈】括号序列[USACO11FEB] Best Parenthesis S 130 37 6
lg3016   【模拟+优化】等边三角形平均值最大[USACO11FEB] The Triangle S 122 37 6
P2278   *【动态规划设计】单词接龙[USACO11FEB] Cowlphabet G 2 2 10
P2279   [USACO11FEB] The Lost Cows G 0 0 (无)
P2998   *【树状数组】数星星2️⃣[USACO11FEB] Generic Cow Protests G 39 9 7
P2949   *【思维】最大连续和[USACO11JAN]Profits S 332 97 6
P1623   *【背包：方案数填满型01背包】平分3️⃣[USACO11JAN] Dividing the Gold S 246 25 9
P1624   *【最短路】边的两端点为同颜色时才能通过的最短路[USACO11JAN] Traffic Lights S 77 23 6
P2284   [USACO11JAN] Bottleneck G 2 1 10
P2285   D37【2-sat】[USACO11JAN] The Continental Cowngress G 5 3 10
P2157   D69 最短路 拓扑【最短路】混合图最短路 [USACO11JAN] Roads and Planes G 215 36 8
P2293   *【最短路】出发点到两点的最短距离[USACO10DEC] Apple Delivery S 55 19 6
P2288   *【动态规划：中间推+优化空间】直线取数游戏[USACO10DEC] Treasure Chest S 121 18 8
P2289   【递归】解01方程组 [USACO10DEC]The Trough Game S 29 15 5
P2290   D61 树的直径 二分 [USACO10DEC] Cow Calisthenics G 5 1 10
P2291   [USACO10DEC] Big Macs Around the World G 0 0 (无)
P2292   [USACO10DEC] Threatening Letter G 0 0 (无)
P2294   *【组合数：综合计算】平面两点之间不经过整数点的方案数[USACO10NOV] Banner S 53 14 7
P2295   *【记忆化搜索】吃糖果[USACO10NOV] Candy S 110 17 8
P2296   【拓扑】关键点[USACO10NOV] Chocolate Milk S 10 4 9
P2297   *【树状数组：逆序对】循环同构的最少交换次数[USACO10NOV] Cow Photographs G（好题） 1 1 10
P2877   【单调队列】又买饲料[USACO10NOV] Buying Feed G 17 5 8
P2868   *【树形DP：相邻点互斥】无根树最多不相邻点数 [USACO10NOV] Visiting Cows G 187 31 8
P2300   *【贪心】牛抢座位[USACO10OCT] Dinner Time S 186 26 8
lg1596   B10【递归：Floodfill】池塘计数 [USACO10OCT] Lake Counting S 32 20 3
P2302   *【背包：价值填满型完全背包】山洞宝石3[USACO10OCT] Making Money G 171 36 7
lg3028   【一维差分】数轴最多覆盖数[USACO10OCT] Soda Machine G 172 42 7
P2371   D58【最近公共祖先LCA】树上同组两点的最大距离[USACO10HOL] Cow Politics G 176 39 7
P2372   *【博弈SG】树上阶梯nim [USACO10HOL] Rocks and Trees G 19 3 9
P2373   *【高斯消元】无向图中炸弹爆炸的概率[USACO10HOL] Driving Out the Piggies G（spj）（好题 34 4 9
P2377   【最大流】J牛打T牛[USACO10HOL] Cow War G（无spj） 17 8 7
P2304   【模拟】哪一座山最宽[USACO10OPEN] Mountain Watching S 21 9 7
P2990   *【模拟：可持久化入门】时间旅行[USACO10OPEN] Time Travel S 9 5 9
P2306   【DP单调队列优化】奶牛的跳格子游戏[USACO10OPEN] Cow Hopscotch G 14 4 9
P2307   *【记忆化搜索】k次选错的最长路[USACO10OPEN] Water Slides G 10 3 10
P2308   *【容斥原理】统计包含原点的三角形[USACO10OPEN] Triangle Counting G 10 7 9
lg6183   【模拟】生成格雷码1️⃣[USACO10MAR] The Rock Game S（改） 38 11 7
P2310   [USACO10MAR] Test Taking S 69 10 8
lg2989   *【01分数规划】[USACO10MAR] Need For Speed S 45 16 6
lg2986   E85 换根DP【树形DP】点边都带权的树的集会点[USACO10MAR] Great Cow Gathering G 15 8 7
lg1937   C33【线段树+贪心】线段覆盖数轴[USACO10MAR]Barn Allocation G 53 18 6
P2314   【计算几何：半平面交】[USACO10MAR] StarCowraft G 13 4 9
P2315   *【贪心】购买巧克力[USACO10FEB] Chocolate Buying S 104 30 6
P2825   【最短路】领取巧克力 [USACO10FEB] Chocolate Giving S 19 11 6
lg2985   *【二分】最小值最大[USACO10FEB] Chocolate Eating S 151 51 6
P2318   [USACO10FEB] Covering the Corral G 31 7 8
P2319   *【宽搜+set二分】冰上[USACO10FEB] Cows on Ice G（好题） 7 6 9
P2320   *【树状数组+DFS】统计点i到根路径点权比wi小的点数[USACO10FEB] Slowing down G 88 28 6
P2321   *【并查集】判断两点是否连通[USACO10JAN] Tea Time S 29 24 1
P4020   *【贪心】购买饲料[USACO10JAN] Buying Feed II S 64 33 3
P2323   *【背包练习】奶酪塔[USACO10JAN] Cheese Towers S 134 20 8
P2324   *【动态规划】两头牛轮流捡硬币[USACO10JAN] Taking Turns G 54 21 5
P2325   [USACO10JAN] Shipping Around an Island G 17 8 7
P2326   *【贪心】树上统计[USACO10JAN] Cow Telephones G 39 21 4
P2327   [USACO09DEC] Bobsledding S 62 6 9
P2328   [USACO09DEC] Music Notes S 14 11 7
lg2970   A29 贪心算法【思维】最多无相交线段数 [USACO09DEC] Selfish Grazing S 255 60 7
P2330   【拓扑】混合图无环[USACO09DEC] Dizzy Cows G（spj） 56 2 10
P2832   *【多源最短路floyd 】 [USACO09DEC]Cow Toll Paths G 25 15 4
P2332   [USACO09DEC] Video Game Troubles G 21 10 6
P2333   [USACO09NOV] A Coin Game S 10 5 9
P2334   [USACO09NOV] The Grand Farm-off S 33 8 7
P2335   [USACO09NOV] Job Hunt S 19 6 8
P2336   [USACO09NOV] Lights G 15 4 9
P2337   [USACO09NOV] Who Brings the Cookies? G 12 7 9
P2338   [USACO09NOV] Cow Rescue G 4 3 10
P2339   【入门】判断大整数奇偶性[USACO09OCT] Even? Odd? G 35 16 5
P2346   [USACO09OCT] The Robot Plow G 13 9 7
P2342   [USACO09OCT] Barn Echoes G 23 13 5
P2349   [USACO09OCT] Papaya Jungle G 2 2 10
P2357   [USACO09OCT] The Leisurely Stroll G 11 2 10
P2363   0x20搜索（练习）7：[USACO09OCT] Invasion of the Milkweed G 40 4 9
P2366   [USACO09OCT] Allowance G 9 4 9
P2367   E08_4 [USACO09OCT] Bessie's Weight Problem G 134 31 7
loj119   D02 最短路 Dijkstra 算法 单源最短路径（无向图） 927 109 8
P2375   [USACO09HOL] Cattle Bruisers G 5 1 10
P2378   [USACO09HOL] Transmission Delay G 6 5 10
P2387   [USACO09HOL] Holiday Painting G 4 1 10
P2388   [USACO09HOL] Pearl Bracelet G（无 SPJ） 1 1 10
P2287   *【最短路：dijkstra算法】单源最短路[USACO09OPEN] Hide and Seek S 163 34 7
P2206   [USACO09OPEN] Cow Line S 52 20 5
P2207   [USACO09OPEN] Cow Digit Game S 58 17 6
P2210   [USACO09OPEN] Grazing2 S 65 20 6
P2215   [USACO09OPEN] Ski Lessons G 38 17 5
P2217   [USACO09OPEN] Work Scheduling G 67 20 6
P3233   *【单调队列】最多分段且段和非递减[USACO09OPEN] Tower of Hay G 22 7 7
P2229   [USACO09OPEN] Bovine Embroidery G 12 9 8
P2240   [USACO09MAR] Sand Castle S 1 1 10
P2849   *【背包练习】和为K倍数的方案数[USACO09MAR] Cow Frisbee Team S 124 26 7
lg2947   *【栈：单调栈】向右看齐[USACO09MAR] Look Up S 269 63 7
P2257   [USACO09MAR] Moon Mooing G 0 0 (无)
P2258   [USACO09MAR] Cleaning Up G 0 0 (无)
lg2944   *【最小割】无向图某些点无法到点1[USACO09MAR] Earthquake Damage 2 G 1 1 10
P1686   [USACO09FEB] The Leprechaun S 23 20 2
P1687   [USACO09FEB] Surround the Islands S 17 15 5
P1688   [USACO09FEB] Bulls And Cows S 16 15 5
lg1607   C32【线段树+贪心 】[USACO09FEB] Fair Shuttle G 61 18 6
P1690   [USACO09FEB] Stock Market G 16 8 8
P1692   D75【模板】分层图最短路 Dijkstra 算法[USACO09FEB] Revamping Trails G 27 14 5
P1612   D04 [USACO09JAN] Best Spot S 81 42 3
P1630   [USACO09JAN] Total Flow S 4 2 10
P1643   [USACO09JAN] Laserphones S 65 25 5
lg2932   【递归：Floodfill】统计无法到点1的点数[USACO09JAN] Earthquake Damage G 25 9 7
P1652   [USACO09JAN] The Baric Bovine G 24 13 5
P1657   D98 最短路径树+并查集 Dijkstra 算法[USACO09JAN] Safe Travel G 23 15 4
P1659   *【背包：填满型01背包】尽量填满2️⃣[USACO08DEC] Hay For Sale S 128 45 5
P1660   [USACO08DEC] Patting Heads S 17 10 6
P1667   [USACO08DEC] Jigsaw Puzzles S 18 13 6
lg2921   【思维】能够到达的点数[USACO08DEC] Trick or Treat on the Farm G 24 14 5
P3590   *【字典树】秘密信息[USACO08DEC] Secret Message G 50 16 6
P1712   [USACO08DEC] Winning Checkers G 5 3 10
P1746   【DP】周长含最多点的凸多边形[USACO08DEC] Largest Fence G 26 12 6
P1941   [USACO08NOV] Buying Hay S 33 29 1
P1944   [USACO08NOV] Guarding the Farm S 66 27 5
P1945   [USACO08NOV] Time Management S 41 30 1
1125   *(隐藏) 0 0 (无)
P3232   D133【最小生成树】[USACO08NOV] Cheering up the Cow G 11 5 9
lg3870   C25_3*【线段树】[USACO08NOV] Light Switching G | [TJOI2009] 开关 44 15 6
P1985   [USACO08NOV] Toys G 31 25 1
P1996   [USACO08OCT] Bovine Bones G 96 43 4
P1998   [USACO08OCT] Building A Fence G 37 27 1
1307   *(隐藏) 0 0 (无)
P2010   [USACO08OCT] Pasture Walking G 85 25 6
P2011   [USACO08OCT] Wheel Rotation G 52 25 4
P2013   [USACO08OCT] Power Failure G 60 22 5
P2018   [USACO08OPEN] Roads Around The Farm S 80 28 5
P2026   [USACO08OPEN] Word Power S 26 12 6
P2030   [USACO08OPEN] Cow Cars S 41 21 4
P2035   D04 Floyd 算法[USACO08OPEN] Clear And Present Danger S 115 44 5
P2038   [USACO08OPEN] Crisis on the Farm G 26 13 5
P2039   [USACO08OPEN] Cow Neighborhoods G 22 13 5
P1203   [USACO08MAR] The Loathesome Hay Baler S 48 12 7
P1442   [USACO08MAR] Cow Travelling S 157 23 8
P1443   [USACO08MAR] River Crossing S 62 21 6
P1140   *【斜率优化】土地征用 [USACO08MAR] Land Acquisition G 135 39 6
P1595   [USACO08MAR] Cow Jogging G 5 3 10
P1596   [USACO08MAR] Pearl Pairing G 7 3 10
P1889   [USACO08FEB] Dining Cows B 9 5 9
P1599   [USACO08FEB] Game of Lines S 9 4 9
P1756   [USACO08FEB] Meteor Shower S 15 8 7
P1810   [USACO08FEB] Eating Together S 42 11 7
P2088   *【动态规划：区间二维一边推】改造道路海拔[USACO08FEB] Making the Grade G 111 26 7
P1882   0x40数据结构进阶（练习）5：旅馆[USACO08FEB] Hotel G 10 6 9
P2043   [USACO08JAN] iCow B 18 12 6
P2830   *【多源最短路floyd 】[USACO08JAN] Cow Contest S 17 15 5
P2046   [USACO08JAN] Running S 21 15 4
P2155   D76【最短路+DP】路径中的边权最大值最小[USACO08JAN] Telephone Lines S 164 50 6
P2050   [USACO08JAN] Haybale Guessing G 66 40 2
P2057   [USACO08JAN] Artificial Lake G 138 29 7
P2090   E69 树形DP [USACO08JAN] Cell Phone Network G 75 31 5
P2100   [USACO07DEC] Bookshelf B 69 40 3
P2101   [USACO07DEC] Bookshelf 2 B 71 34 4
P2108   E08【模板】背包DP 01背包[USACO07DEC] Charm Bracelet S 242 56 7
P2138   D131【最小生成树】[USACO07DEC] Building Roads S 61 27 4
P2145   [USACO07DEC] Mud Puddles S 63 23 5
lg2868   D114【01分数规划+判断负环】环的点权和与边权和之比最大[USACO07DEC] Sightseeing Cows G 35 13 6
P2149   [USACO07DEC] Gourmet Grazers G 27 22 2
P2160   [USACO07DEC] Best Cow Line G 71 23 6
P2831   D04 【多源最短路floyd】[USACO07NOV] Cow Hurdles S 91 35 5
P2177   [USACO07NOV] Milking Time S 98 24 7
P2230   *【贪心】新序列的最小字典序[USACO07NOV] Best Cow Line S 99 40 5
P2392   [USACO07NOV] Telephone Wire G 17 8 7
P2833   D64*【矩阵乘法】9：经过X条边最短路的长度[USACO07NOV] Cow Relays G 35 16 5
P2404   [USACO07NOV] Sunscreen G 6 4 10
P2161   [USACO07OCT] Bessie's Secret Pasture S 44 26 3
P2167   *【宽搜】矩阵最少转90度次数[USACO07OCT] Obstacle Course S 86 25 6
P2175   [USACO07OCT] Super Paintball G 71 21 6
P2847   [USACO07CHN] Summing Sums G 7 5 9
P2858   [USACO07CHN] The Bovine Accordion and Banjo Orchestra G 4 3 10
P2874   [USACO07CHN] Treasure G 2 1 10
P2407   [USACO07OPEN] City Horizon S 14 8 8
lg1588   B15 BFS [USACO07OPEN] Catch That Cow S 213 42 7
lg1985   【穷举+状压】[USACO07OPEN] 翻转棋 Fliptile S 8 5 10
P2434   [USACO07OPEN] Cheapest Palindrome G 0 0 (无)
ATabc402g   [ABC402G] Sum of Prod of Mod of Linear 3 2 10
P2437   [USACO07MAR] Cow Traffic S 3 2 10
P2438   [USACO07MAR] Monthly Expense S 5 3 10
P2439   [USACO07MAR] Gold Balanced Lineup G 14 9 8
P2440   [USACO07MAR] Ranking the Cows G 2 1 10
P2445   [USACO07MAR] Face The Right Way G 4 2 10
P2448   [USACO07FEB] Bronze Lilypad Pond B 4 2 10
P2451   [USACO07FEB] The Cow Lexicon S 0 0 (无)
P2453   [USACO07FEB] Silver Lilypad Pond S 0 0 (无)
P2456   【最短路】[USACO07FEB] Cow Party S 10 5 9
P2458   [USACO07FEB] Building A New Barn G 1 1 10
P2462   [USACO07FEB] Cow Sorting G 0 0 (无)
P2470   [USACO07FEB] Lilypad Pond G 0 0 (无)
P2973   *【贪心】保护花朵[USACO07JAN] Protecting the Flowers S 45 22 4
lg2879   *【差分】最高的牛[USACO07JAN] Tallest Cow S 52 22 5
lg2880   A12*【RMQ】区间最大和最小差[USACO07JAN] Balanced Lineup G 187 43 7
P2486   [USACO07JAN] Problem Solving G 13 7 8
P2487   [USACO07JAN] Cow School G 0 0 (无)
P2488   [USACO06DEC] Cow Picnic S 8 2 10
P2489   [USACO06DEC] Cow Roller Coaster S 1 1 10
P2490   [USACO06DEC] River Hopscotch S 1 1 10
lg2850   D03 D113【最短路：spfa判断负环】混合图判断负环[USACO06DEC] Wormholes G 119 39 6
P2492   [USACO06DEC] The Fewest Coins G 0 0 (无)
P2493   [USACO06DEC] Milk Patterns G 5 2 10
P2494   [USACO06NOV] Bad Hair Day S 4 3 10
P2495   [USACO06NOV] Big Square S 0 0 (无)
P2496   0x50 动态规划（练习）28：圆形数字[USACO06NOV] Round Numbers S 2 2 10
P2141   E26*【状态压缩DP】玉米田 [USACO06NOV] Corn Fields G 63 34 3
P2498   [USACO06NOV] Roadblocks G 0 0 (无)
P2689   [USACO06OCT] Another Cow Number Game G 13 13 6
P2697   [USACO06OCT] Cows on Skates G(无spj） 6 1 10
P2698   [USACO06OCT] Cow Pie Treasures G 6 2 10
P2517   [USACO06OPEN] County Fair Events S 0 0 (无)
P2518   [USACO06OPEN] The Climbing Wall S 3 1 10
P2519   [USACO06OPEN] The Milk Queue G 0 0 (无)
P2699   [USACO06MAR] Ski Lift G 0 0 (无)
P2701   [USACO06MAR] Milk Team Select G 0 0 (无)
P5395   [USACO06FEB] Cellphones G 2 0 10
P7832   [USACO06FEB] Steady Cow Assignment G 0 0 (无)
P7833   [USACO06FEB] Treats for the Cows G/S 2 2 10
P7834   [USACO06FEB] Stall Reservations S 3 0 10
P7835   [USACO06FEB] Backward Digit Sums G/S 1 1 10
P2962   [USACO06JAN] Dollar Dayz S 4 4 10
lg2863   D14 [USACO06JAN] The Cow Prom S 6 6 10
P2968   [USACO06JAN] The Grove S 6 3 10
P1151   D18_2 D162 【边双eDCC】增加边变"边双"[USACO06JAN] Redundant Paths G 172 57 6
P2988   [USACO06JAN] Roping the Field G 0 0 (无)
lg2862   【离散化+二分】>=C的最小正方形[USACO06JAN] Corral the Cows G 111 16 8
P2799   0x50 动态规划（0x58 数据结构优化DP）例题2：[USACO05DEC] Cleaning Shifts S 3 3 10
P2886   [USACO05DEC] Scales S 1 0 10
P2954   [USACO05DEC] Knights of Ni S 3 3 10
2606   *(隐藏) 0 0 (无)
P2960   [USACO05DEC] Cow Patterns G 6 4 10
P2961   [USACO05DEC] Barn Expansion G 7 4 10
lg1842   A24【贪心】奶牛玩杂技[USACO05NOV] Cow Acrobats S 120 61 3
P1126   *【二分图：最小覆盖】[USACO05NOV] Asteroids G 124 46 5
P2735   [USACO05OPEN] Lazy Cows G 0 0 (无)
P2736   [USACO05OPEN] Expedition G 0 0 (无)
P2737   [USACO05OPEN] Around the world G 0 0 (无)
P2738   [USACO05OPEN] Landscaping G 0 0 (无)
P2739   [USACO05MAR] Out of Hay S 3 2 10
P2740   [USACO05MAR] Checking an Alibi S不在场的证明 1 1 10
P2741   [USACO05MAR] Ombrophobic Bovines G发抖的牛 0 0 (无)
P2742   [USACO05MAR] Space Elevator G太空电梯 6 1 10
P3680   *【贪心】[USACO05MAR] Yogurt factory G机器工厂 58 30 3
P2744   [USACO05FEB] Rigging the Bovine Election S 0 0 (无)
P2745   [USACO05FEB] Feed Accounting S 2 2 10
P2746   [USACO05FEB] Part Acquisition S 11 0 10
P2747   [USACO05FEB] Secret Milking Machine G 3 3 10
P2748   [USACO05FEB] Jersey Politics G 0 0 (无)
2173   *(隐藏) 0 0 (无)
P2750   [USACO05JAN] Sumsets S 0 0 (无)
P2180   D166 欧拉回路 [USACO05JAN] Watchcow S 165 40 7
P2192   *【二分图：最小覆盖】[USACO05JAN] Muddy Fields G 189 44 7
P2754   [USACO05JAN] The Wedding Juicer G 1 0 10
P2755   0x50 动态规划（0x55 环形与后效性处理）例题1：休息时间[USACO05JAN] Naptime G 17 6 8
P2757   D08 [USACO04DEC] Bad Cowtractors S 15 7 8
P2758   [USACO04DEC] Tree Cutting S 0 0 (无)
P2759   [USACO04DEC] Dividing the Path G 0 0 (无)
P2760   D158 SCC 缩点[USACO04DEC] Cow Ski Area G 3 2 10
P2803   0x50 动态规划（练习）18：[USACO04DEC]Fence Obstacle Course 12 3 9
P2761   [USACO04NOV] Apple Catching G 1 0 10
P2762   [USACO04OPEN] Turning in Homework G 0 0 (无)
P2764   [USACO04OPEN] Cube Stacking 0 0 (无)
P2765   [USACO04OPEN] The Cow Lineup 10 10 9
P2766   *【树状数组|归并排序】[USACO04OPEN] MooFest G（数据加强） 42 5 9
P2767   【多源最短路floyd 】[USACO04OPEN] Cave Cows 1 1 1 10
P2768   [USACO04OPEN] Cave Cows 2 1 1 10
P2769   [USACO04OPEN] Cave Cows 3 1 1 10
P2770   [USACO04OPEN] Cave Cows 4 1 1 10
P2958   *【贪心】中位数最大[USACO04MAR] Financial Aid 19 10 6
lg1452   G53_1 【模板】旋转卡壳 | [USACO03FALL] Beauty Contest G 6 5 10
P2773   [USACO03FALL] Cow Exhibition G 6 1 10
lg14980   [USACO26JAN1] COW Traversals G 15 4 9
P2003   *【KMP】重复矩阵[USACO03FALL] Milking Grid 72 33 4
P2054   *【树状数组】还原牛序列[USACO03Open] Lost Cows 80 33 5
lg10450   *【二分】平均值最大（长度≥L）[USACO03MAR] Best Cow Fences G 419 76 8
P2967   *【排序】雄伟的山峦[USACO02Open]Mountain Majesties 11 5 9
P2779   [USACO02FEB] Cow Cycling 0 0 (无)
P1929   0x20搜索（练习）11：[USACO02FEB] Power Hungry Cows 31 12 6
P2781   D142 最小生成树 Kruskal 算法+01分数规划[USACO01OPEN] Earthquake 2 1 10

章节 2. 铜组: 2017DEC至今

开放

题目 尝试 AC 难度
lg12022   [USACO25OPEN] Hoof Paper Scissors Minus One B 18 6 8
lg12023   [USACO25OPEN] More Cow Photos B 12 6 9
lg12024   [USACO25OPEN] It's Mooin' Time III B 3 1 10
lg11836   *【模拟】正方形中心对称判断[USACO25FEB] Reflection B 109 21 7
lg11837   *【思维】制造最小排除值[USACO25FEB] Making Mexes B 87 21 7
lg11838   *【动态规划：区间中间推】打印语句最少[USACO25FEB] Printing Sequences B 13 5 9
lg11667   *【模拟】图形重叠分析[USACO25JAN] Astral Superposition B 67 10 8
lg11668   *【思维】哞哞叫Ⅱ [USACO25JAN] It's Mooin' Time II B 58 15 7
lg11669   *【模拟】序列翻转匹配[USACO25JAN] Cow Checkups B 23 9 7
lg11449   *【模拟】链式舍入[USACO24DEC] Roundabount Rounding B 139 25 8
lg11450   *【模拟统计】立方体空格统计[USACO24DEC] Farmer John's Cheese Block B 96 26 6
lg11451   *【模拟】哞哞叫[USACO24DEC] It's Mooin' Time B 22 9 7
lg10274   *【思维细节】布尔语句替换[USACO24OPEN] Logical Moos B 42 9 7
lg10275   *【模拟】多边形周长上两点距离[USACO24OPEN] Walking Along a Fence B 62 13 7
lg10276   *【思维细节】还原序列[USACO24OPEN] Farmer John's Favorite Permutation B 38 14 6
lg10187   *【博弈sg】回文数取石子[USACO24FEB] Palindrome Game B 75 29 5
lg10188   *【思维细节】交换牛奶[USACO24FEB] Milk Exchange B 83 15 8
lg10189   *【二分】访问最多农场[USACO24FEB] Maximizing Productivity B 143 32 7
lg10131   *【思维】众数操作[USACO24JAN] Majority Opinion B 65 25 5
lg10132   *【模拟】在数轴上弹跳[USACO24JAN] Cannonball B 170 25 8
lg10133   [USACO24JAN] Balancing Bacteria B【思维】 68 11 8
lg9974   [USACO23DEC] Candy Cane Feast B*【模拟】 43 12 7
lg9975   [USACO23DEC] Cowntact Tracing 2 B 42 8 8
lg9976   [USACO23DEC] Farmer John Actually Farms B 25 6 8
lg9183   [USACO23OPEN] FEB B 12 6 9
lg9184   [USACO23OPEN] Moo Language B 26 3 9
lg9185   [USACO23OPEN] Rotate and Shift B 10 4 9
lg9121   [USACO23FEB] Hungry Cow B 63 16 7
lg9122   [USACO23FEB] Stamp Grid B 28 12 6
lg9123   [USACO23FEB] Watching Mooloo B 59 27 4
lg9010   [USACO23JAN] Leaders B 70 14 7
lg9011   [USACO23JAN] Air Cownditioning II B 19 10 6
lg9012   [USACO23JAN] Moo Operations B 35 18 4
lg8897   [USACO22DEC] Cow College B 43 20 4
lg8898   [USACO22DEC] Feeding the Cows B 8 5 10
lg8899   [USACO22DEC] Reverse Engineering B 13 5 9
lg8266   [USACO22OPEN] Photoshoot B 11 5 9
lg8267   [USACO22OPEN] Counting Liars B 47 15 6
lg8268   [USACO22OPEN] Alchemy B 4 4 10
lg8183   [USACO22FEB] Sleeping in Class B 11 5 9
lg8184   [USACO22FEB] Photoshoot 2 B 71 14 7
lg8185   [USACO22FEB] Blocks B 50 13 7
lg8090   [USACO22JAN] Herdle B 53 19 5
lg8091   [USACO22JAN] Non-Transitive Dice B 28 14 5
lg8092   [USACO22JAN] Drought B 8 6 9
lg7993   [USACO21DEC] Lonely Photo B 69 12 8
lg7994   [USACO21DEC] Air Cownditioning B 10 5 9
lg7995   [USACO21DEC] Walking Home B 10 5 9
lg9937   [USACO21OPEN] Acowdemia I B 20 4 9
lg9938   [USACO21OPEN] Acowdemia II B 43 14 6
lg9939   [USACO21OPEN] Acowdemia III B 29 9 7
lg9943   [USACO21FEB] Year of the Cow B 3 3 10
lg9944   [USACO21FEB] Comfortable Cows B 4 3 10
lg9945   [USACO21FEB] Clockwise Fence B 42 17 5
lg9940   [USACO21JAN] Uddered but not Herd B 21 13 5
lg9941   [USACO21JAN] Even More Odd Photos B 3 3 10
lg9942   [USACO21JAN] Just Stalling B 52 18 6
lg9955   [USACO20DEC] Do You Know Your ABCs? B 21 16 4
P7396   [USACO20DEC] Daisy Chains B 3 3 10
lg9957   [USACO20DEC] Stuck in a Rut B 2 2 10
lg9952   [USACO20OPEN] Social Distancing I B 2 2 10
lg9953   [USACO20OPEN] Social Distancing II B 3 2 10
lg9954   [USACO20OPEN] Cowntact Tracing B 14 6 8
lg9949   [USACO20FEB] Triangles B 12 2 10
lg9950   [USACO20FEB] Mad Scientist B 26 14 5
lg9951   [USACO20FEB] Swapity Swap B 45 15 6
lg9946   [USACO20JAN] Word Processor B 18 15 5
lg9947   [USACO20JAN] Photoshoot B 64 17 7
lg9948   [USACO20JAN] Race B 24 10 6
lg5831   [USACO19DEC] Cow Gymnastics B 66 24 5
lg5832   [USACO19DEC] Where Am I? B 88 21 7
lg5833   [USACO19DEC] Livestock Lineup B 10 3 10
lg1699   [USACO19OPEN] Bucket Brigade B 71 10 8
lg1700   [USACO19OPEN] Milk Factory B 33 6 8
lg1701   [USACO19OPEN] Cow Evolution B 50 7 8
lg1693   [USACO19FEB] Sleepy Cow Herding B 64 14 7
lg1694   [USACO19FEB] The Great Revegetation B 14 3 9
lg1695   [USACO19FEB] Measuring Traffic B 28 6 8
lg9958   [USACO19JAN] Shell Game B 69 24 6
lg9959   [USACO19JAN] Sleepy Cow Sorting B 154 22 8
lg9960   [USACO19JAN] Guess the Animal B【思维】 175 10 9
lg5116   [USACO18DEC] Mixing Milk B 30 17 4
lg5117   [USACO18DEC] The Bucket List B 26 17 4
lg5118   [USACO18DEC] Back and Forth B 37 8 7
lg10122   [USACO18OPEN] Team Tic Tac Toe B 25 4 8
lg10123   [USACO18OPEN] Milking Order B 540 7 10
lg10124   [USACO18OPEN] Family Tree B 20 5 8
lg1639   【模拟】传送[USACO18FEB] Teleportation B 30 17 4
lg1677   【模拟】数轴的所有点染色[USACO18FEB] Hoofball B 33 7 8
lg1711   [USACO18FEB] Taming the Herd B 21 4 8
lg1696   【模拟】矩形3 和 矩形2 挡住矩形1[USACO18JAN] Blocked Billboard II B 23 4 8
lg1697   【模拟】找贡献最小的线段[USACO18JAN] Lifeguards B 44 18 5
lg1698   【思维】最少交换[USACO18JAN] Out of Place B 44 8 8
lg4122   【模拟】矩形3挡住矩形1和2[USACO17DEC] Blocked Billboard B 25 12 5

章节 3. 银组: 2011NOV至今

开放

题目 尝试 AC 难度
lg12025   [USACO25OPEN] Sequence Construction S 51 16 6
lg12026   *【贪心】配对[USACO25OPEN] Compatible Pairs S 76 25 6
lg12027   [USACO25OPEN] Ski Slope S 34 16 5
lg11839   [USACO25FEB] The Best Lineup S 209 27 8
lg11840   *【树上模拟】确定学生编号[USACO25FEB] Vocabulary Quiz S 124 30 7
lg11841   *【思维+类gcd】ab变成cd的最少步数[USACO25FEB] Transforming Pairs S 158 34 7
lg11670   [USACO25JAN] Cow Checkups S 198 25 8
lg11671   [USACO25JAN] Farmer John's Favorite Operation S 200 23 9
lg11672   [USACO25JAN] Table Recovery S 99 18 8
lg11452   [USACO24DEC] Cake Game S 78 22 6
lg11453   *【差分约束】[USACO24DEC] Deforestation S 94 7 9
lg11454   [USACO24DEC] 2D Conveyer Belt S 28 7 7
lg10277   [USACO24OPEN] Bessie's Interview S 70 24 6
lg10278   [USACO24OPEN] Painting Fence Posts S 44 8 8
lg10279   [USACO24OPEN] The 'Winning' Gene S 53 12 7
lg10190   [USACO24FEB] Target Practice II S 40 5 8
lg10191   [USACO24FEB] Test Tubes S(spj) 42 3 9
lg10192   [USACO24FEB] Moorbles S 85 10 8
lg10134   [USACO24JAN] Cowmpetency S 26 6 8
lg10135   [USACO24JAN] Potion Farming S 64 19 6
lg10136   [USACO24JAN] Cowlendar S 47 13 7
lg9977   [USACO23DEC] Bovine Acrobatics S 57 18 6
lg9978   [USACO23DEC] Cycle Correspondence S 63 21 6
lg9979   [USACO23DEC] Target Practice S 100 11 9
lg9186   [USACO23OPEN] Milk Sum S 19 7 7
lg9187   [USACO23OPEN] Field Day S 16 7 8
lg9188   [USACO23OPEN] Pareidolia S 15 4 9
lg9124   [USACO23FEB] Bakery S 31 6 8
lg9125   [USACO23FEB] Cow-libi S 33 6 8
lg9126   [USACO23FEB] Moo Route II S 24 8 7
lg9013   [USACO23JAN] Find and Replace S 36 6 8
lg9014   [USACO23JAN] Following Directions S 8 4 10
lg9015   [USACO23JAN] Moo Route S 11 5 9
lg8900   [USACO22DEC] Barn Tree S 28 6 8
lg8901   [USACO22DEC] Circular Barn S 12 5 9
lg8902   [USACO22DEC] Range Reconstruction S(spj) 16 3 9
lg8269   [USACO22OPEN] Visits S 12 4 9
lg8270   [USACO22OPEN] Subset Equality S 7 3 10
lg8271   [USACO22OPEN] COW Operations S 4 2 10
lg8186   [USACO22FEB] Redistributing Gifts S 36 13 6
lg8187   [USACO22FEB] Robot Instructions S 10 2 10
lg8188   [USACO22FEB] Email Filing S 207 4 10
lg8093   [USACO22JAN] Searching for Soulmates S 12 6 9
lg8094   [USACO22JAN] Cow Frisbee S 13 6 8
lg8095   [USACO22JAN] Cereal 2 S 7 2 10
lg7990   [USACO21DEC] Closest Cow Wins S 3 1 10
lg7991   [USACO21DEC] Connecting Two Barns S 15 3 9
lg7992   [USACO21DEC] Convoluted Intervals S 61 17 6
lg7555   [USACO21OPEN] Maze Tac Toe S 25 9 7
lg7556   [USACO21OPEN] Do You Know Your ABCs? S 25 7 7
lg7557   [USACO21OPEN] Acowdemia S 115 11 9
lg7410   [USACO21FEB] Just Green Enough S 101 8 9
lg7411   [USACO21FEB] Comfortable Cows S 90 7 9
lg7412   [USACO21FEB] Year of the Cow S 152 9 9
lg7299   [USACO21JAN] Dance Mooves S 96 10 9
lg7300   [USACO21JAN] No Time to Paint S 94 10 9
lg7301   [USACO21JAN] Spaced Out S 20 7 8
lg7148   [USACO20DEC] Cowntagion S 92 13 8
lg7149   [USACO20DEC] Rectangular Pasture S 56 8 8
lg7150   [USACO20DEC] Stuck in a Rut S 28 11 6
lg6281   [USACO20OPEN] Social Distancing S 12 2 10
P7205   [USACO20OPEN] Cereal S 0 0 (无)
P7206   [USACO20OPEN] The Moo Particle S 47 12 7
P7216   [USACO20FEB] Swapity Swapity Swap S 1 1 10
P7217   [USACO20FEB] Triangles S 1 1 10
P7218   [USACO20FEB] Clock Tree S 45 12 7
P7228   [USACO20JAN] Berry Picking S 0 0 (无)
P7229   [USACO20JAN] Loan Repayment S 0 0 (无)
P7230   [USACO20JAN] Wormhole Sort S 0 0 (无)
P7261   [USACO19DEC] MooBuzz S 1 1 10
P7262   [USACO19DEC] Meetings S 25 5 8
P7263   [USACO19DEC] Milk Visits S 4 1 10
P7273   [USACO19OPEN] Left Out S 0 0 (无)
P7274   [USACO19OPEN] Cow Steeplechase II S 0 0 (无)
P7275   [USACO19OPEN] Fence Planning S 0 0 (无)
P7284   [USACO19FEB] Sleepy Cow Herding S 0 0 (无)
P7285   [USACO19FEB] Painting The Barn S 2 1 10
P7287   [USACO19FEB] The Great Revegetation S 2 1 10
P7297   [USACO19JAN] Grass Planting S 1 1 10
P7298   [USACO19JAN] Icy Perimeter S 1 1 10
P7299   [USACO19JAN] Mountain View S 1 1 10
P7109   [USACO18DEC] Convention S 0 0 (无)
P7110   [USACO18DEC] Convention II S 1 1 10
P7111   [USACO18DEC] Mooyo Mooyo S 0 0 (无)
P7121   [USACO18OPEN] Out of Sorts S 1 1 10
P7122   [USACO18OPEN] Lemonade Line S 2 1 10
P7123   [USACO18OPEN] Multiplayer Moo S 0 0 (无)
P7133   [USACO18FEB] Rest Stops S 0 0 (无)
P7134   [USACO18FEB] Snow Boots S 0 0 (无)
P7135   [USACO18FEB] Teleportation S 0 0 (无)
P7145   [USACO18JAN] Lifeguards S 1 1 10
P7146   [USACO18JAN] Rental Service S 0 0 (无)
P7147   [USACO18JAN] MooTube S 0 0 (无)
P7155   [USACO17DEC] My Cow Ate My Homework S 1 1 10
P7156   [USACO17DEC] Milk Measurement S 2 1 10
P7157   [USACO17DEC] The Bovine Shuffle S 1 1 10
P7164   [USACO17OPEN] Paired Up S 1 1 10
P7165   [USACO17OPEN] Bovine Genomics S 0 0 (无)
P7166   [USACO17OPEN] Where's Bessie? S 0 0 (无)
P7172   [USACO17FEB] Why Did the Cow Cross the Road I S 1 1 10
P7173   [USACO17FEB] Why Did the Cow Cross the Road II S 5 1 10
P7174   [USACO17FEB] Why Did the Cow Cross the Road III S 0 0 (无)
P7181   [USACO17JAN] Cow Dance Show S 18 9 7
P7182   [USACO17JAN] Hoof, Paper, Scissor S 6 2 10
P7183   [USACO17JAN] Secret Cow Code S 4 1 10
P7190   [USACO16DEC] Counting Haybales S 2 1 10
P7191   [USACO16DEC] Cities and States S 1 1 10
P7192   [USACO16DEC] Moocast S 1 1 10
P7199   [USACO16OPEN] Field Reduction S 0 0 (无)
P7011   [USACO16OPEN] Diamond Collector S 3 2 10
P7012   [USACO16OPEN] Closing the Farm S 1 1 10
P7019   [USACO16FEB] Circular Barn S 0 0 (无)
P7020   [USACO16FEB] Load Balancing S 4 1 10
P7021   [USACO16FEB] Milk Pails S 12 3 9
P7028   [USACO16JAN] Angry Cows S 6 1 10
P7029   [USACO16JAN] Subsequences Summing to Sevens S 1 1 10
P7030   [USACO16JAN] Build Gates S 0 0 (无)
P7037   [USACO15DEC] Switching on the Lights S 49 8 8
P7038   [USACO15DEC] High Card Wins S 0 0 (无)
P7039   [USACO15DEC] Breed Counting S 0 0 (无)
P7046   [USACO15OPEN] Bessie Goes Moo S 0 0 (无)
P7047   [USACO15OPEN] Trapped in the Haybales S 0 0 (无)
P7048   [USACO15OPEN] Bessie's Birthday Buffet S 0 0 (无)
P7051   [USACO15FEB] Censoring S 2 2 10
P7052   [USACO15FEB] Cow Hopscotch S 1 1 10
P7053   D132 最小生成树 Kruskal 算法 [USACO15FEB] Superbull S 25 6 8
P7057   [USACO15JAN] Stampede S 0 0 (无)
P7058   [USACO15JAN] Cow Routing S 0 0 (无)
P7059   [USACO15JAN] Meeting Time S 1 1 10
P7063   [USACO14DEC] Piggy Back S 0 0 (无)
P7064   [USACO14DEC] Marathon S 0 0 (无)
P7065   [USACO14DEC] Cow Jog S 1 1 10
P7069   [USACO14OPEN] Fair Photography S 0 0 (无)
P7070   [USACO14OPEN] Dueling GPSs S 0 0 (无)
P7071   [USACO14OPEN] Odometer S 0 0 (无)
P7075   D08 [USACO14MAR] Watering the Fields S 3 3 10
P7076   [USACO14MAR] The Lazy Cow S 0 0 (无)
P7077   [USACO14MAR] Mooo Moo S 1 1 10
P7081   [USACO14FEB] Auto-complete S 69 6 9
P7082   [USACO14FEB] Secret Code S 0 0 (无)
P7085   [USACO14JAN] Bessie Slows Down S 0 0 (无)
P7086   [USACO14JAN] Cross Country Skiing S 1 1 10
P7087   [USACO14JAN] Recording the Moolympics S 1 1 10
P7091   [USACO13DEC] Milk Scheduling S 1 1 10
P7092   [USACO13DEC] Vacation Planning S 0 0 (无)
P7093   [USACO13DEC] The Bessie Shuffle S 0 0 (无)
P2614   [USACO13NOV] Farmer John has no Large Brown Cow S 0 0 (无)
P2615   [USACO13NOV] Crowded Cows S 0 0 (无)
P2616   [USACO13NOV] Pogo-Cow S 0 0 (无)
P2620   [USACO13OPEN] What's Up With Gravity S 0 0 (无)
P2621   [USACO13OPEN] Fuel Economy S 0 0 (无)
P2622   [USACO13OPEN] Luxury River Cruise S 0 0 (无)
P2626   [USACO13MAR] Poker Hands S 3 2 10
P2627   [USACO13MAR] Farm Painting S 0 0 (无)
P2628   [USACO13MAR] The Cow Run G/S 0 0 (无)
P2631   [USACO13FEB] Perimeter S 0 0 (无)
P2632   D134 最小生成树 Kruskal 算法[USACO13FEB] Tractor S 46 10 7
P2633   [USACO13FEB] Milk Scheduling S 6 2 10
P2637   [USACO13JAN] Painting the Fence S 1 1 10
P2638   [USACO13JAN] Square Overlap S 0 0 (无)
P2639   [USACO13JAN] Party Invitations S 0 0 (无)
P2643   [USACO12DEC] Crazy Fences S 0 0 (无)
P2644   [USACO12DEC] Wifi Setup S 0 0 (无)
P2645   [USACO12DEC] Milk Routing S 1 1 10
P2649   [USACO12NOV] Clumsy Cows S 1 1 10
P2650   [USACO12NOV] Distant Pastures S 2 0 10
P2651   [USACO12NOV] Balanced Cow Breeds G/S 0 0 (无)
P2654   [USACO12OPEN] Unlocking Blocks S 0 0 (无)
P2655   [USACO12OPEN] Bookshelf S 1 1 10
P2656   [USACO12OPEN] Running Laps S 0 0 (无)
P2660   [USACO12MAR] Tractor S 7 0 10
P2661   [USACO12MAR] Flowerpot S 1 1 10
P2662   [USACO12MAR] Landscaping S 0 0 (无)
P2666   [USACO12FEB] Overplanting S 0 0 (无)
P2667   [USACO12FEB] Cow IDs S 0 0 (无)
P2668   [USACO12FEB] Relocation S 0 0 (无)
P2672   [USACO12JAN] Delivery Route S 0 0 (无)
P2673   [USACO12JAN] Bale Share S 1 1 10
P2674   [USACO12JAN] Mountain Climbing S 0 0 (无)
P2678   [USACO11DEC] Cow Photography G/S 0 0 (无)
P2679   [USACO11DEC] RoadBlock S / [USACO14FEB]Roadblock G/S 0 0 (无)
P2680   [USACO11DEC] Umbrellas for Cows S 0 0 (无)
P2683   [USACO11NOV] Cow Beauty Pageant S 0 0 (无)
P2684   [USACO11NOV] Cow Lineup S 2 1 10
P2685   [USACO11NOV] Tile Exchanging S 4 1 10

章节 4. 金组: 2011NOV至今

开放

题目 尝试 AC 难度
lg12028   *【组合数：综合计算】M OO…O的方案数[USACO25OPEN] Moo Decomposition G 39 20 4
lg12029   [USACO25OPEN] Election Queries G 37 6 8
lg12030   [USACO25OPEN] OohMoo Milk G 17 3 9
lg11842   *【树形DP：相邻点兼容】基环树森林最小点权和[USACO25FEB] Bessie's Function G 279 30 9
lg11843   [USACO25FEB] The Best Subsequence G 42 5 9
lg11844   [USACO25FEB] Friendship Editing G 15 8 7
lg11673   [USACO25JAN] Median Heap G 22 6 8
lg11674   [USACO25JAN] Reachable Pairs G 93 11 8
lg11675   [USACO25JAN] Photo Op G 15 4 9
lg11455   [USACO24DEC] Cowdepenence G 13 4 9
lg11456   [USACO24DEC] Interstellar Intervals G 20 3 9
lg11457   *【反悔贪心】[USACO24DEC] Job Completion G 380 52 8
lg10280   [USACO24OPEN] Cowreography G 19 8 7
lg10281   [USACO24OPEN] Grass Segments G 20 7 8
lg10282   [USACO24OPEN] Smaller Averages G 14 7 8
lg10193   [USACO24FEB] Bessla Motors G 10 4 9
lg10194   [USACO24FEB] Milk Exchange G 14 6 8
lg10195   [USACO24FEB] Quantum Moochanics G 15 4 9
lg10137   [USACO24JAN] Walking in Manhattan G 19 4 9
lg10138   [USACO24JAN] Cowmpetency G 32 8 7
lg10139   [USACO24JAN] Nap Sort G 36 7 8
lg9980   [USACO23DEC] Flight Routes G 17 7 8
lg9981   [USACO23DEC] Minimum Longest Trip G 27 5 8
lg9982   [USACO23DEC] Haybale Distribution G 27 5 8
lg9189   [USACO23OPEN] Custodial Cleanup G 12 5 9
lg9190   [USACO23OPEN] Pareidolia G 24 14 5
lg9191   [USACO23OPEN] Tree Merging G 3 1 10
lg9127   [USACO23FEB] Equal Sum Subarrays G 19 9 7
lg9128   [USACO23FEB] Fertilizing Pastures G 35 7 8
lg9129   [USACO23FEB] Piling Papers G 15 7 8
lg9016   [USACO23JAN] Find and Replace G 19 9 7
lg9017   [USACO23JAN] Lights Off G 39 10 7
lg9018   [USACO23JAN] Moo Route G 17 10 6
lg8903   [USACO22DEC] Bribing Friends G 23 7 7
lg8904   *【STL：set】[USACO22DEC] Mountains G 52 13 7
lg8905   [USACO22DEC] Strongest Friendship Group G 15 6 8
lg8272   [USACO22OPEN] Apple Catching G 9 5 9
lg8273   [USACO22OPEN] Pair Programming G 9 2 10
lg8274   [USACO22OPEN] Balancing a Tree G 9 2 10
lg8189   [USACO22FEB] Redistributing Gifts G 12 4 9
lg8190   [USACO22FEB] Cow Camp G 19 3 9
lg8191   D136 【最小生成树】[USACO22FEB] Moo Network G 35 4 9
lg8096   [USACO22JAN] Drought G 7 6 9
lg8097   [USACO22JAN] Farm Updates G 17 6 8
lg8098   [USACO22JAN] Tests for Haybales G 12 3 9
lg7988   [USACO21DEC] HILO G 3 3 10
lg7987   [USACO21DEC] Paired Up G 9 3 10
lg7989   [USACO21DEC] Bracelet Crossings G 6 4 10
lg7527   [USACO21OPEN] United Cows of Farmer John G 11 7 8
lg7528   D143 最小生成树 Kruskal 算法 [USACO21OPEN] Portals G 5 3 10
lg7529   [USACO21OPEN] Permutation G 1 1 10
lg7413   [USACO21FEB] Stone Game G 1 1 10
lg7414   [USACO21FEB] Modern Art 3 G 1 1 10
lg7415   [USACO21FEB] Count the Cows G 1 1 10
lg7296   [USACO21JAN] Uddered but not Herd G 1 1 10
lg7297   [USACO21JAN] Telephone G 8 6 9
lg7298   [USACO21JAN] Dance Mooves G 2 1 10
lg7151   [USACO20DEC] Replication G 1 1 10
lg7152   [USACO20DEC] Bovine Genetics G 3 1 10
lg7153   [USACO20DEC] Square Pasture G 1 1 10
P7201   [USACO20OPEN] Haircut G 2 2 10
P7202   [USACO20OPEN] Favorite Colors G 8 7 9
P7203   [USACO20OPEN] Exercise G 35 11 6
P7213   *【差分约束】[USACO20FEB] Timeline G 173 21 8
P7214   [USACO20FEB] Help Yourself G 1 1 10
P7215   [USACO20FEB] Delegation G 31 10 6
P7225   [USACO20JAN] Time is Mooney G 3 2 10
P7226   [USACO20JAN] Farmer John Solves 3SUM G 0 0 (无)
P7227   [USACO20JAN] Springboards G 1 0 10
P7264   [USACO19DEC] Milk Pumping G 0 0 (无)
P7265   [USACO19DEC] Milk Visits G 0 0 (无)
P7266   [USACO19DEC] Moortal Cowmbat G 0 0 (无)
P7276   [USACO19OPEN] Snakes G 18 10 7
P7277   D135 最小生成树 Prim 算法[USACO19OPEN] I Would Walk 500 Miles G 74 12 8
P7278   [USACO19OPEN] Balancing Inversions G 35 6 8
P7288   [USACO19FEB] Cow Land G 0 0 (无)
P7289   [USACO19FEB] Dishwashing G 56 11 7
P7290   [USACO19FEB] Painting the Barn G 62 7 9
P7100   [USACO19JAN] Cow Poetry G 0 0 (无)
P7101   [USACO19JAN] Sleepy Cow Sorting G 0 0 (无)
P7102   [USACO19JAN] Shortcut G 0 0 (无)
P7112   [USACO18DEC] Fine Dining G 0 0 (无)
P7113   [USACO18DEC] Cowpatibility G 0 0 (无)
P7114   [USACO18DEC] Teamwork G 2 1 10
P7124   [USACO18OPEN] Out of Sorts G 14 7 8
P7125   [USACO18OPEN] Milking Order G 0 0 (无)
lg4377   *【01分数规划】[USACO18OPEN] Talent Show G 75 15 7
P7136   [USACO18FEB] Snow Boots G 0 0 (无)
P7137   [USACO18FEB] Directory Traversal G 0 0 (无)
P7138   [USACO18FEB] Taming the Herd G 1 1 10
P7148   [USACO18JAN] MooTube G 0 0 (无)
P7149   [USACO18JAN] Cow at Large G 1 1 10
P7150   [USACO18JAN] Stamp Painting G 0 0 (无)
P7158   [USACO17DEC] A Pie for a Pie G 0 0 (无)
P7159   E66 树形DP [USACO17DEC] Barn Painting G 2 2 10
P7160   [USACO17DEC] Haybale Feast G 7 2 10
P7167   [USACO17OPEN] Bovine Genomics G 0 0 (无)
P7168   [USACO17OPEN] Modern Art 2 G 0 0 (无)
P7175   [USACO17FEB] Why Did the Cow Cross the Road I G 23 8 7
P7176   [USACO17FEB] Why Did the Cow Cross the Road II G 1 1 10
P7177   [USACO17FEB] Why Did the Cow Cross the Road III G 0 0 (无)
P7184   [USACO17JAN] Balanced Photo G 1 1 10
P7185   [USACO17JAN] Hoof, Paper, Scissor G 1 1 10
P7186   [USACO17JAN] Cow Navigation G 0 0 (无)
P7193   D08 [USACO16DEC] Moocast G 13 7 8
P7194   [USACO16DEC] Cow Checklist G 2 2 10
P7195   [USACO16DEC] Lasers and Mirrors G 0 0 (无)
P7013   [USACO16OPEN] Splitting the Field G 0 0 (无)
P7014   [USACO16OPEN] Closing the Farm G 1 1 10
P7015   [USACO16OPEN] 248 G 2 2 10
P7022   [USACO16FEB] Circular Barn G 0 0 (无)
P7023   [USACO16FEB] Circular Barn Revisited G 0 0 (无)
P7024   [USACO16FEB] Fenced In G 1 0 10
P7031   [USACO16JAN] Angry Cows G 0 0 (无)
P7032   [USACO16JAN] Radio Contact G 2 1 10
P7033   [USACO16JAN] Lights Out G 0 0 (无)
P7040   [USACO15DEC] High Card Low Card G 0 0 (无)
P7041   [USACO15DEC] Fruit Feast G 0 0 (无)
P7042   [USACO15DEC] Bessie's Dream G 0 0 (无)
P7049   [USACO15OPEN] Palindromic Paths G 1 0 10
P7050   [USACO15OPEN] Trapped in the Haybales G 0 0 (无)
P7054   [USACO15FEB] Cow Hopscotch G 0 0 (无)
P7055   [USACO15FEB] Censoring G 2 1 10
P7056   [USACO15FEB] Fencing the Herd G 0 0 (无)
P7060   [USACO15JAN] Cow Rectangles G 0 0 (无)
P7061   [USACO15JAN] Moovie Mooving G 0 0 (无)
P7062   D159 SCC 缩点+拓扑 [USACO15JAN] Grass Cownoisseur G 28 5 8
P7066   [USACO14DEC] Guard Mark G 1 0 10
P7067   [USACO14DEC] Marathon G 0 0 (无)
P7068   [USACO14DEC] Cow Jog G 1 1 10
P7072   [USACO14OPEN] Fair Photography G 0 0 (无)
P7073   [USACO14OPEN] Cow Optics G 0 0 (无)
P7074   [USACO14OPEN] Code Breaking G 0 0 (无)
P7078   [USACO14MAR] The Lazy Cow G 0 0 (无)
P7079   [USACO14MAR] Sabotage G 10 9 9
P7080   [USACO14MAR] Counting Friends G 0 0 (无)
P7083   [USACO14FEB] Cow Decathlon G 0 0 (无)
P7084   [USACO14FEB] Airplane Boarding G 0 0 (无)
P7088   [USACO14JAN] Cow Curling G 0 0 (无)
P7089   [USACO14JAN] Ski Course Rating G 0 0 (无)
P7090   [USACO14JAN] Building a Ski Course G 0 0 (无)
P2834   【最短路】[USACO13DEC] Vacation Planning G 3 1 10
P7095   [USACO13DEC] Optimal Milking G 14 9 8
P7096   [USACO13DEC] The Bessie Shuffle G 0 0 (无)
P2617   [USACO13NOV] Empty Stalls G 0 0 (无)
P2618   [USACO13NOV] Line of Sight G 0 0 (无)
P2619   [USACO13NOV] No Change G 0 0 (无)
P2623   [USACO13OPEN] Photo G 0 0 (无)
P2624   [USACO13OPEN] Yin and Yang G 68 6 9
P2625   [USACO13OPEN] Figure Eight G 0 0 (无)
P2628   [USACO13MAR] The Cow Run G/S 0 0 (无)
P2629   [USACO13MAR] Hill Walk G 0 0 (无)
P2630   [USACO13MAR] Necklace G 0 0 (无)
P2634   [USACO13FEB] Partitioning the Farm G 0 0 (无)
P2635   [USACO13FEB] Taxi G 10 7 9
P2636   [USACO13FEB] Route Design G 0 0 (无)
P2640   [USACO13JAN] Cow Lineup G 0 0 (无)
P2641   [USACO13JAN] Island Travels G 0 0 (无)
P2642   [USACO13JAN] Seating G 0 0 (无)
P2646   [USACO12DEC] Gangs of Istanbull/Cowstantinople G 0 0 (无)
P2647   [USACO12DEC] First! G 0 0 (无)
P2648   [USACO12DEC] Running Away From the Barn G 0 0 (无)
P2651   [USACO12NOV] Balanced Cow Breeds G/S 0 0 (无)
P2652   [USACO12NOV] Concurrently Balanced Strings G 0 0 (无)
P2653   [USACO12NOV] Balanced Trees G 0 0 (无)
P2657   [USACO12OPEN] Tied Down G 0 0 (无)
P2658   [USACO12OPEN] Bookshelf G 0 0 (无)
P2659   [USACO12OPEN] Balanced Cow Subsets G 0 0 (无)
P2663   [USACO12MAR] Large Banner G 0 0 (无)
lg3051   *【中位数】环上移动干草[USACO12MAR] Haybale Restacking G 67 33 4
P2885   *【状态压缩DP】最小分组[USACO12MAR] Cows in a Skyscraper G 187 38 7
P2669   [USACO12FEB] Cow Coupons G 0 0 (无)
P2670   [USACO12FEB] Symmetry G 0 0 (无)
P2671   E72 树形DP [USACO12FEB] Nearby Cows G 2 2 10
P2675   [USACO12JAN] Video Game G 1 1 10
P2676   [USACO12JAN] Cow Run G 0 0 (无)
P2677   [USACO12JAN] Bovine Alliance G 0 0 (无)
P2678   [USACO11DEC] Cow Photography G/S 0 0 (无)
P2681   D144 最小生成树 Kruskal 算法[USACO11DEC] Simplifying the Farm G 2 2 10
P2682   [USACO11DEC] Grass Planting G 1 1 10
P2686   [USACO11NOV] Above the Median G 0 0 (无)
P2687   [USACO11NOV] Binary Sudoku G 2 1 10
lg3033   【二分图：最大独立集】奶牛跨栏赛[USACO11NOV] Cow Steeplechase G 2 2 10

章节 5. 铂组: 2015DEC至今

开放

题目 尝试 AC 难度
lg12031   [USACO25OPEN] Forklift Certified P 18 3 9
lg12032   [USACO25OPEN] Lazy Sort P 25 2 9
lg12033   [USACO25OPEN] Package Pickup P 5 1 10
lg11845   [USACO25FEB] Min Max Subarrays P 16 3 9
lg11846   [USACO25FEB] Transforming Pairs P 5 1 10
lg11847   [USACO25FEB] True or False Test P 9 2 10
lg11676   [USACO25JAN] DFS Order P 8 3 10
lg11677   [USACO25JAN] Shock Wave P 1 1 10
lg11678   [USACO25JAN] Watering the Plants P 4 1 10
lg11458   [USACO24DEC] All Pairs Similarity P 12 3 9
lg11459   [USACO24DEC] It's Mooin' Time P 10 3 10
lg11460   [USACO24DEC] Maximize Minimum Difference P 8 1 10
lg10283   [USACO24OPEN] Identity Theft P 24 6 8
lg10284   [USACO24OPEN] Splitting Haybales P 22 5 8
lg10285   [USACO24OPEN] Activating Robots P 39 3 9
lg10196   [USACO24FEB] Lazy Cow P 38 4 9
lg10197   [USACO24FEB] Minimum Sum of Maximums P 13 2 9
lg10198   [USACO24FEB] Infinite Adventure P 4 2 10
lg10140   [USACO24JAN] Island Vacation P 14 2 9
lg10141   [USACO24JAN] Merging Cells P 13 3 9
lg10142   [USACO24JAN] Mooball Teams III P 24 6 8
lg9983   [USACO23DEC] Cowntact Tracing P 5 2 10
lg9984   [USACO23DEC] A Graph Problem P 7 3 10
lg9985   [USACO23DEC] Train Scheduling P 10 3 10
lg9192   [USACO23OPEN] Pareidolia P 10 4 9
lg9193   [USACO23OPEN] Good Bitstrings P 5 5 10
lg9194   [USACO23OPEN] Triples of Cows P 5 3 10
lg9130   [USACO23FEB] Hungry Cow P 21 6 8
lg9131   [USACO23FEB] Problem Setting P 16 5 8
lg9132   [USACO23FEB] Watching Cowflix P 19 4 9
lg9019   [USACO23JAN] Tractor Paths P 20 7 8
lg9020   [USACO23JAN] Mana Collection P 33 6 8
lg9021   [USACO23JAN] Subtree Activation P 52 9 8
lg8906   [USACO22DEC] Breakdown P 18 6 8
lg8907   [USACO22DEC] Making Friends P 21 6 8
lg8908   [USACO22DEC] Palindromes P 23 6 8
lg8275   [USACO22OPEN] 262144 Revisited P 21 2 9
lg8276   [USACO22OPEN] Hoof and Brain P 10 5 9
lg8277   [USACO22OPEN] Up Down Subsequence P 10 4 9
lg8192   [USACO22FEB] Paint by Rectangles P 56 6 9
lg8193   [USACO22FEB] Sleeping in Class P 158 7 9
lg8194   [USACO22FEB] Phone Numbers P 44 4 9
lg8099   [USACO22JAN] Minimizing Haybales P 12 5 9
lg8100   [USACO22JAN] Counting Haybales P 12 10 8
lg8101   [USACO22JAN] Multiple Choice Test P 19 6 8
lg7984   [USACO21DEC] Tickets P 4 3 10
lg7985   [USACO21DEC] Paired Up P 4 3 10
lg7986   [USACO21DEC] HILO P 4 2 10
lg7530   [USACO21OPEN] United Cows of Farmer John P 77 10 8
lg7531   [USACO21OPEN] Routing Schemes P 23 4 8
lg7532   [USACO21OPEN] Balanced Subsets P 46 8 8
lg7416   [USACO21FEB] No Time to Dry P 28 8 7
lg7417   [USACO21FEB] Minimizing Edges P 19 4 9
lg7418   [USACO21FEB] Counting Graphs P 12 3 9
lg7293   [USACO21JAN] Sum of Distances P 29 5 8
lg7294   [USACO21JAN] Minimum Cost Paths P 62 4 9
lg7295   [USACO21JAN] Paint by Letters P 12 2 10
lg7154   [USACO20DEC] Sleeping Cows P 40 9 7
lg7155   [USACO20DEC] Spaceship P 29 4 9
lg7156   [USACO20DEC] Cowmistry P 24 4 9
lg6275   [USACO20OPEN] Sprinklers 2: Return of the Alfalfa P 24 10 6
lg6276   [USACO20OPEN] Exercise P 21 6 8
lg6277   [USACO20OPEN] Circus P 21 6 8
lg6142   [USACO20FEB] Delegation P 32 10 7
lg6143   [USACO20FEB] Equilateral Triangles P 33 9 7
lg6144   [USACO20FEB] Help Yourself P 46 8 8
lg6008   [USACO20JAN] Cave Paintings P 30 10 6
lg6009   [USACO20JAN] Non-Decreasing Subsequences P 35 8 7
lg6010   [USACO20JAN] Falling Portals P 59 8 8
lg5851   [USACO19DEC] Greedy Pie Eaters P 2 2 10
lg5852   [USACO19DEC] Bessie's Snow Cow P 1 1 10
lg5853   [USACO19DEC] Tree Depth P 2 2 10
lg5422   [USACO19OPEN] Compound Escape P 1 1 10
lg5423   [USACO19OPEN] Valleys P 1 1 10
lg5242   [USACO19FEB] Cow Dating P 5 2 10
lg5243   [USACO19FEB] Moorio Kart P 6 2 10
lg5244   [USACO19FEB] Mowing Mischief P 1 1 10
lg5202   [USACO19JAN] Redistricting P 1 1 10
lg5203   [USACO19JAN] Exercise Route P 13 6 8
lg5204   [USACO19JAN] Train Tracking 2 P 3 2 10
lg5155   [USACO18DEC] Balance Beam P 1 1 10
lg5156   [USACO18DEC] Sort It Out P 7 3 10
lg5157   [USACO18DEC] The Cow Gathering P 1 1 10
lg4372   [USACO18OPEN] Out of Sorts P 1 1 10
lg4373   [USACO18OPEN] Train Tracking P 1 1 10
lg4374   [USACO18OPEN] Disruption P 1 1 10
lg4088   [USACO18FEB] Slingshot P 1 1 10
lg4271   D59 树的直径 树上前缀和[USACO18FEB] New Barns P 3 1 10
lg4270   [USACO18FEB] Cow Gymnasts P 1 1 10
lg4182   [USACO18JAN] Lifeguards P 4 3 10
lg4183   [USACO18JAN] Cow at Large P 1 1 10
lg4184   [USACO18JAN] Sprinklers P 1 1 10
lg4081   [USACO17DEC] Standing Out from the Herd P 9 2 10
lg4082   [USACO17DEC] Push a Box P 1 1 10
lg4090   A38 贪心算法 [USACO17DEC] Greedy Gift Takers P 132 29 7
lg3664   [USACO17OPEN] Modern Art P 1 1 10
lg3665   [USACO17OPEN] Switch Grass P 3 2 10
lg3666   [USACO17OPEN] COWBASIC P 1 1 10
lg3656   *【树状数组】最少交叉[USACO17FEB] Why Did the Cow Cross the Road I P 11 1 10
lg3657   [USACO17FEB] Why Did the Cow Cross the Road II P 2 1 10
lg3658   [USACO17FEB] Why Did the Cow Cross the Road III P 1 1 10
lg3605   C87【树状数组+DFS】统计子树i中点权比wi大的点数[USACO17JAN] Promotion Counting P 58 24 5
lg3606   [USACO17JAN] Building a Tall Barn P 1 1 10
lg3607   [USACO17JAN] Subsequence Reversal P. 1 1 10
lg1715   [USACO16DEC] Lots of Triangles P 1 1 10
lg2098   [USACO16DEC] Team Building P 1 1 10
lg2541   [USACO16DEC] Robotic Cow Herd P 1 1 10
lg3147   [USACO16OPEN] 262144 P 12 9 8
lg3148   [USACO16OPEN] Bull in a China Shop P 1 1 10
lg2748   [USACO16OPEN] Landscaping P 1 1 10
lg6172   [USACO16FEB] Load Balancing P 2 1 10
lg3141   D138 [USACO16FEB] Fenced In P 12 1 10
lg6173   [USACO16FEB] Circular Barn P 6 1 10
lg3135   【动态规划：区间一维一边推】最大子矩阵2️⃣[USACO16JAN] Fort Moo P 16 10 7
lg3136   [USACO16JAN] Mowing the Field P 3 1 10
lg6176   [USACO16JAN] Lights Out P 3 1 10
lg3128   A11*【树上点差分】树上路径修改和点查询1[USACO15DEC] Max Flow P 29 19 3
lg3129   *【模拟+set】[USACO15DEC] High Card Low Card P 7 4 10
lg3130   C02*【线段树】一维区间修改+区间询问[USACO15DEC] Counting Haybale P 278 40 8
 
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