func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a;     cin >> a;     if (a > 36) {       cout <<  -1 ;     } else {       while (a >= 2) {         a -= 2;         cout <<  8 ;       }       if (a == 1) {         cout <<  4 ;       }     }   }   