#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,m;
	cin>>n>>m;
	if(n==m){
		cout<<"Y"<<endl;
		cout<<n*m;
	}else{
		cout<<"N"<<endl;
		cout<<n*m;
	}
}
/**************************************************************
	Problem: 1655
	User: sucongyi
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/