func_code_string: #include <bits/stdc++.h>   using namespace std;   long long c, hr, hb, wr, wb;   int main() {     cin >> c >> hr >> hb >> wr >> wb;     long long i, mx = 0, mxi;     for (i = 0; i <= c / wr; i += 1000)       if (i * hr + ((c - i * wr) / wb) * hb > mx) {         mx = i * hr + ((c - i * wr) / wb) * hb;         mxi = i;       }     for (i = max((long long)0, mxi - 20005); i <= min(c / wr, mxi + 20005); i++)       if (i * hr + ((c - i * wr) / wb) * hb > mx) {         mx = i * hr + ((c - i * wr) / wb) * hb;         mxi = i;       }     cout << mx << endl;     return 0;   }   