Consecutively Descending Integers

Given a string s containing digits, return whether it contains consecutively descending integers.

Constraints

• n ≤ 10 where n is the length of s

https://binarysearch.com/problems/Consecutively-Descending-Integers

Examples

Example 1

Input

• s = 100999897

Output

• answer = True

Explanation

[100, 99, 98, 97] is consecutively descending.

Example 2

Input

• s = 3210

Output

• answer = True

Solution