第六测试点只输入了4个数？96分

#include<bits/stdc++.h>
using namespace std;
int n;
struct pencil{
	int sum,price;
}a,b,c;
int main(){
	cin>>n;
	cin>>a.sum>>a.price;
	cin>>b.sum>>b.price;
	cin>>c.sum>>c.price;
	cout<<min((ceil(n*1.0/a.sum))*a.price,min((ceil(n*1.0/b.sum))*b.price,(ceil(n*1.0/c.sum))*c.price));
	return 0;
}