Олимпиадный тренинг

Задача 21960. Comparing the digits of a number


Given a two-digit number. Display the word YES if the digits of this number are the same and the word NO if the digits are different.

Input 
One number is entered from the keyboard.

Imprint 
Display the word YES if the digits of the given number are the same, or the word NO if the digits are different.
 

 

Examples
# Input Output
1 65 NO
2 55 YES