新手必看

向上取整ceil()

#include<bits/stdc++.h>
using namespace std;
double n,q,w,e,r,t,y;
int main(){
    cin>>n>>q>>w>>e>>r>>t>>y;
    int a=ceil(n/q)*w;
    int b=ceil(n/e)*r;
    int c=ceil(n/t)*y;
    cout<<min(min(a,b),c);
    return 0;
}