func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int x, n, m;     cin >> n >> m;     if (n < m) {       cout <<  -1 n ;       return 0;     }     if (n % 2 == 0)       x = n / 2;     else       x = (n / 2) + 1;     while (x % m != 0) {       x++;     }     cout << x <<   n ;   }   