// editor2
#include<stdio.h>
#include<ctype.h>
#include<string.h>
int main()
{
    char s[1001],cleened[1001];
    int j=0;
    fgets(s,sizeof(s),stdin);
    for(int i=0;s[i]!='\0';i++)
    {
        if)(isalnum(s[i]))
        {
            cleened[j++]=tolower(s[i]);
        }
    }
    cleened[j]='\0';
    int left=0,right=j-1;
    while(left<right)
    {
        if(cleened[left]!=cleened[right])
        {
            printf("No");
            return 0;
        }
        left++;
        right--;
    }
    printf("Yes");
    return 0;
}