时间限制：C/C++/Rust/Pascal 1秒，其他语言2秒
空间限制：C/C++/Rust/Pascal 256 M，其他语言512 M
64bit IO Format: %lld
空间限制：C/C++/Rust/Pascal 256 M，其他语言512 M
64bit IO Format: %lld
题目描述
Phigros is a music game in which players are required to touch the screen following the rhythm of songs and try to get the highest scores.
Recall that
%3D%5Cbegin%7Bcases%7D%0A%5Clfloor%20x%5Crfloor%2C%20%26%20x%3C%5Clfloor%20x%5Crfloor%2B0.5%20%5C%5C%0A%5Clfloor%20x%5Crfloor%20%2B%201%2C%20%26%20x%5Cge%5Clfloor%20x%5Crfloor%2B0.5%0A%5Cend%7Bcases%7D)
Now Walk Alone is playing a song with
notes. He has already got the judgement of the first 
notes, and he wants to know the maximum score he could get if he played the rest of the song perfectly.
The total score of a song is the sum of the following two parts rounded to the nearest integer (assume that the song has notes in total):
- Accuracy. The accuracy score for each note is added up independently according to the judgment:
- Perfect:
;
- Good:
;
- Bad or miss:
.
- Perfect:
- Combo. The Max Combo of a song is the maximum number of continuous notes with perfect or good judgements. The combo score for a song with Max Combo
is
.
Recall that
Now Walk Alone is playing a song with
输入描述:
The first line contains two integers, the note count of the song and the number of notes Walk Alone has played.
The-th of the following
输出描述:
An integer indicating the maximum score Walk Alone could get.
备注:
A song has at mostnotes in Phigros.