func_code_string: #include <bits/stdc++.h>   using namespace std;   int N, M[55][55], C[55];   int main() {     cin >> N;     for (int i = 1; i <= N * (N - 1) / 2 - 1; ++i) {       int a, b;       cin >> a >> b;       M[a][b] = M[b][a] = 1;       C[a]++;     }     for (int i = 1; i <= N; ++i)       for (int j = i + 1; j <= N; ++j)         if (!M[i][j]) {           if (C[i] > C[j])             cout << i <<     << j <<   n ;           else             cout << j <<     << i <<   n ;         }     return 0;   }   