func_code_string: #include <bits/stdc++.h>   using namespace std;   int x[10][10];   int main() {     int n, m;     cin >> n >> m;     for (int i = 0; i < m; i++) {       int a, b;       cin >> a >> b;       x[a][b] = x[b][a] = 1;     }     if (n < 7)       cout << m <<   n ;     else {       int sum = 30;       for (int i = 1; i <= 7; i++) {         for (int j = i + 1; j <= 7; j++) {           int ans = 0;           for (int o = 1; o <= 7; o++) {             if (x[i][o] == 1 && x[j][o] == 1) ans++;           }           if (ans < sum) sum = ans;         }       }       cout << m - sum <<   n ;     }     return 0;   }   