Not Bad Array

Mr. Hikiko will react with a “No Bad”, if you can solve this problem.

An array is a Not Bad array if the sum of all of its element is equal to its length. For example, this array [ 1, -1, 3] is a Not Bad array since the sum of its all element which is 3 is equal to its length.


This is a companion discussion topic for the original entry at https://toph.co/p/not-bad-array