#include <bits/stdc++.h>
using namespace std;
int main() {
  int N, M;
  cin >> N >> M;
  vector<long long> A(N);
  for (int i = 0; i < N; ++i) cin >> A[i];
  map<long long, int> nums;
  long long sum = 0;
  nums[sum]++;
  for (int i = 0; i < N; ++i) {
    sum += A[i];
    nums[sum % M]++;
  }
  long long res = 0;
  for (map<long long, int>::iterator it = nums.begin(); it != nums.end();
       ++it) {
    res += it->second * (it->second - 1) / 2;
  }
  cout << res << endl;
}
