#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: panjinyan
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/