#include<bits/stdc++.h> 
using namespace std;
int main()
{
	int a,g,s,b;
	cin>>a;
	g=a%10;
	s=a/10%10;
	b=g;
	if(g==b){
		cout<<"Y";
	}else{
		cout<<"N";
	}
	
    
}
/**************************************************************
	Problem: 1628
	User: yangjunwen
	Language: C++
	Result: Wrong Answer
****************************************************************/