#include<bits/stdc++.h>
using namespace std;
int main(){
	
	int n,x,y;
	cin>>n;
	x=n/100;
	y=n%10;
	if(x==y){
		cout<<"Y";
	}else{
		cout<<"N";
	}
	
	return 0;
}
/**************************************************************
	Problem: 1628
	User: huangyaojie3
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/