#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(isainum(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;
}