func_code_string: #include <bits/stdc++.h>   using namespace std;   long long a[100001];   int main() {     long long n, s = 0, i, k, j;     string m;     cin >> n;     for (i = 1; i <= n; i++) {       cin >> m;       k = 0;       for (j = 0; j < n; j++)         if (m[j] ==  C ) k++, a[j + 1]++;       s += ((k - 1) * k) / 2;     }     for (i = 1; i <= n; i++) s += ((a[i] - 1) * a[i]) / 2;     cout << s;     return 0;   }   