// https://atcoder.jp/contests/abc105/tasks/abc105_d
#include <bits/stdc++.h>
using namespace std;
using ll = long long int;

#define REP(i, n) FOR(i, 0, n)
#define FOR(i, s, n) for (int i = (s), i##_len = (n); i < i##_len; ++i)
#define isvisiblechar(c) (0x21 <= (c) && (c) <= 0x7E)
#define cin scanner
#define cout printer
namespace {
class MaiScanner {
  public:
    template <typename T> void input_integer(T &var) {
        var = 0;
        T sign = 1;
        int cc = getchar_unlocked();
        for (; cc < '0' || '9' < cc; cc = getchar_unlocked())
            if (cc == '-')
                sign = -1;
        for (; '0' <= cc && cc <= '9'; cc = getchar_unlocked())
            var = (var << 3) + (var << 1) + cc - '0';
        var = var * sign;
    }
    inline int c() { return getchar_unlocked(); }
    inline MaiScanner &operator>>(int &var) {
        input_integer<int>(var);
        return *this;
    }
    inline MaiScanner &operator>>(long long &var) {
        input_integer<long long>(var);
        return *this;
    }
    inline MaiScanner &operator>>(string &var) {
        int cc = getchar_unlocked();
        for (; !isvisiblechar(cc); cc = getchar_unlocked())
            ;
        for (; isvisiblechar(cc); cc = getchar_unlocked())
            var.push_back(cc);
        return *this;
    }
    template <typename IT> void in(IT begin, IT end) {
        for (auto it = begin; it != end; ++it)
            *this >> *it;
    }
};
class MaiPrinter {
  public:
    template <typename T> void output_integer(T var) {
        if (var == 0) {
            putchar_unlocked('0');
            return;
        }
        if (var < 0)
            putchar_unlocked('-'), var = -var;
        char stack[32];
        int stack_p = 0;
        while (var)
            stack[stack_p++] = '0' + (var % 10), var /= 10;
        while (stack_p)
            putchar_unlocked(stack[--stack_p]);
    }
    inline MaiPrinter &operator<<(char c) {
        putchar_unlocked(c);
        return *this;
    }
    inline MaiPrinter &operator<<(int var) {
        output_integer<int>(var);
        return *this;
    }
    inline MaiPrinter &operator<<(long long var) {
        output_integer<long long>(var);
        return *this;
    }
    inline MaiPrinter &operator<<(char *str_p) {
        while (*str_p)
            putchar_unlocked(*(str_p++));
        return *this;
    }
    inline MaiPrinter &operator<<(const string &str) {
        const char *p = str.c_str();
        const char *l = p + str.size();
        while (p < l)
            putchar_unlocked(*p++);
        return *this;
    }
    template <typename IT> void join(IT begin, IT end, char sep = ' ') {
        for (bool b = 0; begin != end; ++begin, b = 1)
            b ? *this << sep << *begin : *this << *begin;
    }
};
} // namespace
MaiScanner scanner;
MaiPrinter printer;

int main(void) {
    int N, M, t;
    cin >> N >> M;
    // A[left, right) が M の倍数
    unordered_map<int, int> mp;
    mp[0]++;
    ll sum = 0, ans = 0;
    REP(i, N) {
        cin >> t;
        sum += t;
        mp[sum % M]++;
    }
    for (auto &x : mp) {
        ans += (ll)x.second * (x.second - 1) / 2;
    }
    cout << ans << '\n';

    return 0;
}


Measured memory_bytes: 3596