#include <bits/stdc++.h>
using namespace std;
int n;
long m, a, c, s;
map<long, int> x;
int main() {
  cin >> n >> m;
  x.emplace(0, 1);
  c = 0;
  for (int i = 0; i < n; ++i) {
    cin >> a;
    c = (c + a) % m;
    if (x.find(c) != x.end())
      x.at(c)++;
    else
      x.emplace(c, 1);
  }
  s = 0;
  for (auto &e : x) {
    s += e.second * (e.second - 1) / 2;
  }
  cout << s;
}
