#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-i;
    while(left<right) {
        if(cleand[left]!=cleaned[right]) {
            printf("No");
            return 0;
        }
        left++;
         right++;
    }
    printf("Yes");
    return 0;
}