func_code_string: #include <bits/stdc++.h>   using namespace std;   using ll = long long int;   using vi = vector<int>;   const ll INF = 1e9 + 7;   void solution() {     int n;     cin >> n;     if (n == 1) {       cout <<  -1 n ;       return;     } else {       cout <<  2 ;       n -= 1;       while (n--) {         cout <<  3 ;       }     }     cout << endl;   }   int main() {     int test;     cin >> test;     while (test--) {       solution();     }     return 0;   }   