func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       vector<int> visited(n);       vector<int> a(n);       vector<int> ans(n);       for (int i = 0; i < n; i++) {         cin >> a[i];         a[i]--;       }       for (int i = 0; i < n; i++) {         if (visited[i] == 0) {           vector<int> v;           while (!visited[i]) {             v.push_back(i);             visited[i] = 1;             i = a[i];           }           for (auto x : v) ans[x] = v.size();         }       }       for (int i = 0; i < n; i++) cout << ans[i] <<    ;       cout << endl;     }   }   