救救我，嘎嘣脆啦！错误记录

#include<bits/stdc++.h> 
using namespace std;
int main()
{
	int a,b,sum=0;
	cin>>a>>b;
	for(int i=a;i<=b;i++){
		if(i%4==0)
			sum+=i;
	}
	cout<<sum;
	return 0;
}