func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     char s[100];     int n, t;     cin >> n >> t;     if (n == 1 && t == 10)       cout << -1;     else {       if (t < 10)         s[0] = t + 48;       else         s[0] =  1 ;       for (int i = 1; i < n; i++) {         s[i] =  0 ;       }       for (int i = 0; i < n; i++) {         cout << s[i];       }     }   }   