#include<iostream>
#include<string>
#include<vector>
#include<cstring>
#include<algorithm>
#include<stdio.h>
#include<cmath>

using namespace std;

int main()
{
	int B;
	int G;

	cout<<"ヤスオ君を除いた男女の数を入力"<<endl;
	cout<<"男"<<endl;
	scanf("%d",&B);
	cout<<"女"<<endl;
	scanf("%d",&G);

	if(B+1 == G)
	{
		cout<<"YES"<<endl;
	}

	else
	{
		cout<<"NO"<<endl;
	}

	cout<<abs((B+1)-G)<<endl;

}