#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: xuezihong1
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/