#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,g,b;
	scanf("%d",&n);
	g=n%10;
	g=n/100;
	if (g==b){
		cout<<"Y"<<endl;
	}
	else{
		cout<<"N"<<endl;
	}
	return 0;
}
/**************************************************************
	Problem: 1628
	User: xiaojingxuan
	Language: C++
	Result: Wrong Answer
****************************************************************/