#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,g,s,b;
	cin>>a;
	g=a%10;
	s=a/10%10;
	b=a/100;
	if(g==b){
		cout<<"Y";
	}else{
		cout<<"N";
	}
}
/**************************************************************
	Problem: 1628
	User: sucongyi
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/