func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve(long long int test) {     long long int n;     cin >> n;     cout << n << endl;     for (long long int i = 1; i <= n; i++) cout << i <<    ;     cout << endl;   }   int main() {     long long int t = 1, test = 1;     cin >> t;     while (t--) {       solve(test++);     }   }   