#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,d,e,f,g;
	cin>>a;
	b=a/100000;
	c=a/10000%10;
	d=a/1000%10;
	e=a/100%10;
	f=a/10%10;
	g=a%10;
	if(b*100+c*10+d==g*100+f*10+e){
		cout<<"Y";
	}else cout<<"N";
}
/**************************************************************
	Problem: 1629
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/