0分链接

#include<bits/stdc++.h>
using namespace std;
int main(){
	
	int n,money_a=0,money_b=0,money_c=0,price_a,price_b,price_c,num_a,num_b,num_c;
	cin>>n>>price_a>>num_a>>price_b>>num_b>>price_c>>num_c;
	int numm_a=num_a,numm_b=num_b,numm_c=num_c;;
	for(int i=1;;i++){
		if(num_a<=n){
			num_a+=numm_a;
			money_a+=price_a;
		}
		if(num_b<=n){
			num_b+=numm_b;
			money_b+=price_b;
		}
		if(num_c<=n){
			num_c+=numm_c;
			money_c+=price_c;
		}
		if(num_a>n&&num_b>n&&num_c>n){
			break;
		}
	}	
	int min=money_a;
	if(money_b<money_a&&money_b<money_c){
		min=money_b;
	}
	if(money_c<money_a&&money_c<money_b){
		min=money_c;
	}
	cout<<min;
	
	return 0;
}