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

//Int:
long double a,b;

//Function:

int main()
{
	//Code:
	cin>>a>>b;
	a-=(int)a;
	b-=(int)b;
	cout<<((abs(a-b)<=1e-13)?"YES":"NO")<<'\n';
	return 0;
}

应该没有人知道我赛时挂了8次吧

#1#2#5#7#8挂了