#include<stdio.h>
int main()
{
int x,i,y=0,t;
scanf("%d",&x);
t=x;
while(x!=0)
{
y=y*10+x%10;
x=x/10;
}
if(t==y)
printf("YES");
else
printf("NO");
return 0;
}
#include<stdio.h>
int main()
{
int x,i,y=0,t;
scanf("%d",&x);
t=x;
while(x!=0)
{
y=y*10+x%10;
x=x/10;
}
if(t==y)
printf("YES");
else
printf("NO");
return 0;
}