func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[52][52] = {0};   int b[52];   bool c[52] = {0};   int main() {     int n;     scanf( %d , &n);     for (int i = 1; i <= n; i++) {       for (int j = 1; j <= n; j++) {         scanf( %d , &a[i][j]);         if (c[a[i][j]] == 0)           c[a[i][j]] = 1;         else           b[i] = a[i][j];       }       memset(c, 0, sizeof(c));     }     for (int i = 1; i <= n; i++) c[b[i]] = 1;     for (int i = 1; i <= n; i++) {       if (b[i])         cout << b[i];       else {         for (int j = 1; j <= n; j++)           if (c[j] == 0) {             cout << j;             c[j] = 1;             break;           }       }       cout <<    ;     }     return 0;   }   