func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long mod = 1e9 + 7;   int main() {     long long int tc;     cin >> tc;     while (tc--) {       long long int n;       cin >> n;       while (n--) cout << 1 <<    ;       cout <<   n ;     }     return 0;   }   