#include <bits/stdc++.h>
using namespace std;

int main(){
    int n,g,b;
    cin>>n;
    b = n / 100;
    g = n % 10;
    if(b == g){
    	cout<<"Y";
	}else{
		cout<<"N";
	}
}
 

/**************************************************************
	Problem: 1628
	User: admin
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/