func_code_string: #include <bits/stdc++.h>   using namespace std;   int main(int argc, char const *argv[]) {     long long n, m, k, l;     scanf( %lld%lld%lld%lld , &n, &m, &k, &l);     n /= m;     m = (m + k + l - 1) / m;     printf( %lld n , (n >= m) ? m : -1);     return 0;   }   