#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c,d,e,f,g,h;
	cin>>a;
	b=a%10;
	c=a/10%10;
	d=a/100%10;
	e=a/1000%10;
	f=a/10000%10;
	g=a/100000%10;
	h=b*100000+c*10000+d*1000+e*100+f*10+g;
	if(a==h){
		cout<<"Y";
	}else if(a!=h){
		cout<<"N";
	}
}
/**************************************************************
	Problem: 1629
	User: toughuatao1
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/