#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,g,s,b,q,w,x;
	cin>>n;
	g=n%10;
	s=n/10%10;
	b=n/100%10;
	q=n/1000%10;
	w=n/10000%10;
	x=n/100000;
	if (g==x && s==w && b==q){
		cout<<"Y"<<endl;
	}
	else{
		cout<<"N"<<endl;
	}
	return 0;
}
/**************************************************************
	Problem: 1629
	User: xiaojingxuan
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/