* 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 |
Запрещенные операторы: list; [; sort