#include<stdio.h>
#include<iostream>
using namespace std;
int main()
{
cout<<"1/10="<<1/10<<endl;
cout<<"1%10="<<1%10<<endl;
cout<<"12/10="<<12/10<<endl;
cout<<"12%10="<<12%10<<endl;
int s[20],i,j,k;
long in;
cin>>in;
for(j=1;in>0;j++)
{
s[j]=in%10;
//cout<<s[j]<<endl;
in/=10;
//cout<<in<<endl;
}
for (int i=0;i<10;i++)//j=4
{
cout<<s[i]<<endl;
}
cout<<"j="<<j<<endl;
for(i=1;i<j/2;i++)
{
if(s[i]!=s[j-i]){printf("NO");break;}
else
k=1;
}
if(k==1)
printf("YES");
system("pause");
return 0;
}