Background

Description

Given an array of strings, return the count of the number of strings with the given length.

Format

Input

Output

Samples

"a" "bb" "b" "ccc"] 

2

"a" "bb" "b" "ccc"] 

1

"a" "bb" "b" "ccc"] 

0

Limitation

1s, 1024KiB for each test case.