d532. 文文的求婚 (三)

#include 

using namespace std;



int main() 

{

	int a,b,count=0;

	cin>>a>>b;

	for(int year=a;year<=b;year++)

	{

		if((year%4==0 && year%100!=0) || (year%400==0))

			count++;

	}

	cout<

	return 0;

}