闰年数量

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

bool isLeapYear(int year)
{
return year % 4 == 0 && year % 100 != 0 || year % 400 == 0;
}
int main()
{
int begin,end;
cin>>begin>>end;
int ans = 0;
for (int i = begin; i <= end; i++)
{
if(isLeapYear(i)) ans ++ ;
}
cout<<ans;
}