#include <iostream>
#include <iomanip>
#include <sstream>
#include <stdlib.h>
#include <algorithm>
#include <math.h>
#include <time.h>
#include <windows.h>
using namespace std;







int main()
{
    string number;
    cin>>number;
    int l = number.length();
    int l2 = 0;
    bool stop=false;
    for(int i=l-1; i>=0; i--){
        if( number[i]=='0' && stop==false )continue;
        else stop=true;
        if( number[i]==number[l2] && stop==true ){
                                                  l2++;
                                                 }
        else if( number[i]!=number[l2] && stop==true ){
                                                       cout<<"NO";
                                                       break;
                                                      }
        if( i==l2 || l2+1==i){
                              cout<<"YES";
                              break;
                             }
    }


return 0;
}