func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     while (scanf( %d , &n) == 1) {       if (n == 1)         printf( -1 n );       else if (n == 2) {         printf( 2 2 n );       } else if (n == 4)         printf( 4 2 n );       else {         int a, b;         if (n % 2 == 0) {           a = n - 2;           b = 2;         } else {           a = n - 1;           b = 2;         }         printf( %d %d n , a, b);       }     }     return 0;   }   