#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,s,d,g;
    cin>>a;
    s=a%10;
    d=a/10%10;
    g=a/100;
    if(s=g){
    	cout<<"Y";
	}else{
		cout<<"N";
	}
	}
/**************************************************************
	Problem: 1628
	User: tonghuawei
	Language: C++
	Result: Wrong Answer
****************************************************************/