func_code_string: #include <bits/stdc++.h>   int team[1000010][2], ans[1010], n, x;   bool used[1010];   int main() {     scanf( %d , &n);     n *= 2;     for (int i = 1; i <= n; i++)       for (int j = 1; j < i; j++) {         scanf( %d , &x);         team[x][0] = i;         team[x][1] = j;       }     used[0] = 1;     for (int i = 1000000; i > 0; i--) {       if (!used[team[i][0]] && !used[team[i][1]]) {         used[team[i][0]] = 1;         used[team[i][1]] = 1;         ans[team[i][0]] = team[i][1];         ans[team[i][1]] = team[i][0];       }     }     for (int i = 1; i < n; i++) printf( %d  , ans[i]);     printf( %d n , ans[n]);     return 0;   }   