#include <bits/stdc++.h>
using namespace std;
int minn = 1e9 + 7;

int main(){
    int n;
    cin >> n;
    for(int a, b, i = 1; i <= 3; i++){
        cin >> a >> b;
        int k = n / a + 1;
        if(b * k < minn) minn = b * k; 
    }
    cout << minn <<endl;
    return 0;
}

有人能帮我找出问题吗？