96pts球跳喵

#include<bits/stdc++.h>
using namespace std;
int main(){
	ios::sync_with_stdio(0);
    double n,pn[15],pv[15],pd[15],ans=114514191;
    cin>>n;
    for(int i=1;i<=3;i++)
    {
    	cin>>pn[i]>>pv[i];
    	pd[i]=ceil(n/pn[i])*pv[i];
    	ans=min(ans,pd[i]);
    }
    cout<<ans;
    return 0;
}