```#include<iostream>
using namespace std;
int a[10],b[10];
int main()
{
    int n,minn=100000000;
	cin>>n;
	for(int i=1;i<=3;++i)
	{
		cin>>a[i]>>b[i];
	}
	for(int i=1;i<=3;++i)
	{
		if(n%a[i]==0)
	    {
	    	if(n/a[i]*b[i]<minn)
	    	minn=n/a[i]*b[i];
    	}
    	else
    	{
    		if((n/a[i]+1)*b[i])
    		minn=(n/a[i]+1)*b[i];
		}
	}
	cout<<minn<<endl;
	return 0;
}
# ```