大佬救助！！！

#include<bits/stdc++.h>
using namespace std;
int ans, cmp[10005], money[10005];
int main(){
    int n, minn = 2e9;
    cin >> n;
    for(int i = 1 ; i <= 3 ; i++)
        cin >> cmp[i] >> money[i];
    for(int i = 1 ; i <= 3 ; i++)
    {
        int cnt = 1;
        while(cmp[i] < n)
        {
            cmp[i] += cmp[i];
            cnt ++;
        }
        ans = min(minn, cnt * cmp[i]);
    }
    cout << ans;
    return 0;
}