func_code_string: #include <bits/stdc++.h>   using namespace std;   constexpr static int MAXN = 1e6;   int main() {     int k, a, b;     cin >> k >> a >> b;     if (a > b) swap(a, b);     int x = a / k;     int y = b / k;     if (x == 0 && y == 0) {       cout << -1 << endl;       return 0;     }     if (x == 0 && b % k > 0) {       cout << -1 << endl;       return 0;     }     cout << x + y << endl;   }   