#include<stdio.h>
int main()
{
    int m,n,t;
    scanf("%d",&m);
    n=m/100;
    t=m%10;
    if(n==t)
        printf("Y");
    else
        printf("N");
    return 0;
}
/**************************************************************
	Problem: 1628
	User: admin
	Language: C
	Result: Accepted
	Time:11 ms
	Memory:1144 kb
****************************************************************/