#include<bits/stdc++.h>
using namespace std;
int main(){
	int n=0,a=0,b=0,c=0,d=0,e=0,f=0;
	cin>>n;
	a=n/100000;
	b=n%100000-n%10000;
	c=n%10000-n%1000;
	d=n%1000-n%100;
	e=n%100-n%10;
	f=n%10;
	int m=0,l=0;
	b=b/10000;
	c=c/1000;
	d=d/100;
	e=e/10;
	m=a*100+b*10+c;
	l=f*100+e*10+d;
	if(m==l){
		cout<<"Y";
	}else{
		cout<<"N";
	}
}
/**************************************************************
	Problem: 1629
	User: linmiaoling
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/