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