Module: (Python) Processing data in a loop. Anchoring


Problem

12 /13


* The two largest digits are 2

Problem

Given a natural number N (\(N<=10^9\)). Determine the two largest digits of a number. 

Input 
The input is a natural number.

Imprint 
Output two space-separated digits, first the largest digit of the number, then the second largest (not equal to the first largest digit). If the number consists of the same digits, print NO.
 

 

Examples
# Input Output
1 45545 5 4
2 111 NO