TypoCoderDiv2 | Topcoder Archive

Problem Statement

TypoCoder is a programming contest like TopCoder. TypoCoder also has a rating system. There are two types of coders in TypoCoder: brown coders and ciel coders. A brown coder is a coder whose rating is greater than or equal to 1200. A ciel coder is a coder whose rating is less than 1200.

Whenever a new contestant joins TypoCoder, their rating is 500. Cat Lower joined TypoCoder and then competed in some contests. You are given a int[] rating. For each i (0-based index), rating[i] is Cat Lower's rating after he competed in (i+1) contests.

Return the number of times Cat Lower changed his color (i.e., changed from being a ciel coder to being a brown coder or back).

Definition

Class:: TypoCoderDiv2
Method:: count
Parameters:: int[]
Returns:: int
Method signature:: int count(int[] rating)
(be sure your method is public)

Constraints

rating will contain between 1 and 50 elements, inclusive.
Each element of rating will be between 0 and 4000, inclusive.

Examples

```
{1000,1200,1199}
```
```
Returns: 2
```
After the first contest Cat Lower was still a ciel coder. After the second contest his new rating was 1200 which made him a brown coder. (This was the first color change.) After the third contest his new rating was 1199 which made him a ciel coder again. (This was the second color change.)
```
{1500,2200,900,3000}
```
```
Returns: 3
```
The color changed after the first, the third and the fourth competition.
```
{600,700,800,900,1000,1100,1199}
```
```
Returns: 0
```
Cat Lower wasn't a brown coder at any time in this case.
```
{0,4000,0,4000,4000,0,0}
```
```
Returns: 4
```

{575,1090,3271,2496,859,2708,3774,2796,1616,2552,3783,2435,1111,526,562}

Returns: 4

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