func_code_string: #include <bits/stdc++.h>   using namespace std;   void fnc() {     int n;     cin >> n;     cout << n << endl;     for (int i = 0; i < n; i++) cout << i + 1 <<    ;     cout << endl;   }   int main() {     int n;     cin >> n;     for (int i = 0; i < n; i++) fnc();   }   