func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     int p[n + 1];     for (int i = 1; i <= n; i++) cin >> p[i];     bool done[n + 1];     for (int i = 1; i <= n; i++) {       for (int j = 1; j <= n; j++) done[j] = false;       int start = i;       while (1) {         if (done[start] == true) {           cout << start <<    ;           break;         }         done[start] = true;         start = p[start];       }     }     return 0;   }   