Background

Description

Given an array of scores sorted in increasing order, return true if the array contains 3 adjacent scores that differ from each other by at most 2, such as with {3, 4, 5} or {3, 5, 5}.

Format

Input

Output

Samples

[3 4 5]

true

[3 4 6]

false

[1 3 5 5]

true

Limitation

1s, 1024KiB for each test case.