#include<stdio.h>
#include<string.h>
#include<ctype.h>

int main()
{
    char s[1001], c[1001];
    scanf("%s",s);
    int k = 0;
    for(int i = 0; s[i]; i++){
        if(isalnum(s[i])) { c[k++] = tolower(s[i]); } }
        c[k]=' ';
        int l = 0; r = k-1; ip = 1;
        while(l<r)
        {
            if(c[l] != c[r])
            { ip=0; break; }
        l++; r--;    
        }
        printf("%s",ip ? "Yes":"No");
        return 0;

}