# Count Of Subarrays With Equal Number Of 0s 1s And 2s

easy

1. You are given an array that contains only 0s, 1s, and 2s. 2. You have to find the count of subarrays with equal number of 0s, 1s, and 2s.

## Constraints

A number representing the count of subarrays with equal number of 0s, 1s, and 2s.

## Format

### Input

A number N arr1 arr2.. N numbers

### Output

A number representing count of subarrays with an equal number of 0s, 1s, and 2s.

## Example

Sample Input

7
0 1 0 2 0 1 0

### Sample Output

2

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