func_code_string: #include <bits/stdc++.h>   using namespace std;   long long a[51], us[51];   int main() {     long long t, n;     cin >> t;     while (t--) {       cin >> n;       for (long long i = 1; i <= n; ++i) cout << i <<    ;       cout <<   n ;     }     return 0;   }   