#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

constexpr int N=100005;
int n,m,a[N];ll ans=0;
int main(){
	cin>>n>>m;map<int,int>mp;
	mp[0]++;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		a[i]=(a[i]+a[i-1])%m;
		ans+=mp[a[i]];
		mp[a[i]]++;
	}
	cout<<ans<<endl;;
	
	return 0;
}