func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, m, kecil, tamp1 = 0, tamp2 = 0, tambah = 0;     cin >> n;     cin >> m;     tamp1 = n;     tamp2 = m;     while (n != 0) {       n = tamp1;       if (tambah >= 1) m += tamp2;       if (m > n) {         cout << -1;         return 0;       }       for (int i = 0; i < m; i++) {         if (n == m - i)           n -= 1;         else           n -= 2;       }       tambah++;     }     cout << m;   }   