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Points:
7

Time limit:
0.6s

Memory limit:
256M

Problem type

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Call an array of integers *diverse* if it has length at least 1 and it has at least distinct integers.

Given an array of integers and a parameter , compute the number of subarrays that are diverse.

#### Constraints

#### Input Specification

The first line contains two positive integers, and .

Each of the next lines contains a positive integer, . These integers in order comprise the array.

#### Output Specification

Output the number of subarrays that are diverse.

#### Sample Input

```
4 2
1
2
2
2
```

#### Sample Output

`3`

## Comments

So {1, 2, 2, 2} has subarrays with 2 or more elements:

{1, 2}

{2, 2}

{2, 2}

{1, 2, 2}

{1, 2, 2, 2}

but only {1, 2} is an array of distinct integers.... Am I missing something here? is distinct the wrong adjective or is the sample case wrong?

You are looking for subarrays with at least distinct integers

{1, 2}, {1, 2, 2}, {1, 2, 2, 2} all work because they contain integers 1 and 2

Makes sense, thanks.

Hate

:-(TLE