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