#include<stdio.h>
#include<ctype.h>
#include<string.h>
int main{
    char s[1001],cleaned[1001];
    int j=0;
    fgets(s,sizeof(s),stdin);
    for (int i = 0;s[i]!='\0';i++)
    {
        if(isalnum(s[i]))
        {
            cleaned[j++]=tolower(s[i]);
        }
    }
    cleaned[j]='\0';
    int left = 0,right = j-1;
    while(left,right)
    {
        if(cleaned[left] != cleaned[right])
        {
            printf("No");
            return 0;
        }
        left++;
        right--;
    }
    printf("Yes");
    return 0;
}