func_code_string: #include <bits/stdc++.h>   using namespace std;   long long arr[100005], ans[2];   int main() {     int n, m;     scanf( %d%d , &n, &m);     for (int i = 0; i < n; i++) {       scanf( %lld , arr + i);     }     for (int sum = 1; sum <= m << 1; sum++) {       vector<int> vec = {0};       for (int i = 0; i < n; i++) {         vec.push_back(arr[i] % sum);       }       vec.push_back(sum - 1);       sort(vec.begin(), vec.end());       for (int i = n + 1, t = 0; i; i--, t ^= 1) {         int x = max(vec[i - 1], vec[n - t] / 2) + 1, y = min(vec[i], m);         int a = max(x, sum - y), b = min(y, sum - x);         if (a <= b) ans[t] += b - a + 1;       }     }     long long x = ((long long)m * m - ans[0] - ans[1]) / 2;     printf( %lld %lld %lld %lld n , x, x, ans[1], ans[0]);     return 0;   }   