源代码

有没有大佬来告诉我我哪里出错了......

#include<bits/stdc++.h>
using namespace std;

int main(){
	int n,m,a,b,c,a1,b1,c1,a2,b2,c2;
	cin>>n;
	cin>>a1>>a2;
	cin>>b1>>b2;
	cin>>c1>>c2;
	a=n/a1;
	a1=n%a1==0?a:a+1;
	a=a1*a2;
	b=n/b1;
	b1=n%b1==0?b:b+1;
	b=b1*b2;
	c=n/c1;
	c1=n%c1==0?c:c+1;
	c=c1*c2;
	if(a<b&&a<c)
	m=a;
	if(b<a&&b<c)
	m=b;
	if(c<a&&c<b)
	m=c;
	cout<<m;
	return 0;
}