//????CCF  10?9A
#pragma GCC optimize(2)
#include<bits/stdc++.h>
#define ll long long
#define FOR(i,a,b) for(int i = a;i < b;++i)
#define FORD(i,a,b) for(int i = a;i <= b;++i)
#define FastIO std::ios::sync_with_stdio(0),std::cin.tie(0),std::cout.tie(0);
#define endl "\n"
#define De cout << "De" << endl

using namespace std;

int n,m;
int a[200005];

int main()
{
	FastIO;
	//freopen("","r",stdin);
	//freopen("","w",stdout);
	cin >> n >> m;
    vector<int> a(n);
    FOR(i,0,n) {
        cin >> a[i];
    }

    vector<int> prefix_sum(n + 1, 0);
    FORD(i,1,n) {
        prefix_sum[i] = (prefix_sum[i - 1] + a[i - 1]) % m;
    }
	
	vector<int> prefix_prefix_sum(n + 1,0);
	FORD(i,1,n){
		prefix_prefix_sum[i] = prefix_prefix_sum[i - 1] + prefix_sum[i];
	}
    long long ans = 0;
    FORD(i,1,n) {
		
    }

    cout << ans << endl;

    return 0;
}