```cpp
#include<bits/stdc++.h>
using namespace std;
int i,j,k,n,m,w,ans;
int main(){
scanf("%d",&n);
for(i=0;i<3;i++){
scanf("%d%d",&j,&k);m=j;w=k;
while(j<n){j<<=1;k<<=1;}
while(j>n){j-=m;k-=w;}
while(j<n){j+=m;k+=w;}
if(k<ans||ans==0)ans=k;
}
printf("%d\n",ans);
return 0;
}
```
by Ricky2008 @ 2022-10-25 20:06:33