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