#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin >> n;
    if(n < 1000) cout << n;
    else if(n < 10000) cout << n / 10 << "0";
    else if(n < 100000) cout << n / 100 << "00";
    else if(n < 1000000) cout << n / 1000 << "000";
    else if(n < 10000000) cout << n / 10000 << "0000";
    else if(n < 100000000) cout << n / 100000 << "00000";
    else cout << n / 1000000 << "000000";
}