[BOJ 6053] Mountain Watching
View as PDFOne day, Bessie was gazing off into the distance at the beautiful Wisconsin mountains when she wondered to herself: which is the widest one?</p>
She decided to take N (1 <= N <= 10,000) height measurements H_i (1 <= H_i <= 1,000,000,000) sequentially along the horizon using her new Acme Long Distance Geoaltimeter.
A mountain is defined to be a consecutive sequence of H_i values which increases (or stays the same) and then decreases (or stays the same), e.g., 2, 3, 3, 5, 4, 4, 1. It is possible for a mountain on the edge of her field of vision only to increase or only to decrease in height, as well.
The width of a mountain is the number of measurements it encompasses. Help Bessie identify the widest mountain.
Here's a simple example of a typical horizon:
***
** *
** *
*** * * *** *** * *** *
**
?ddsssuussuussssssddddssddssssuuuuuuuuddddddssududssssuuudduddsssssuds
3211112333677777776543332111112344456765432111212111112343232111111211
aaaaa cccccccccccccccccccc eeeeeee ggggggggg
bbbbbbbbbbbbbbbbbbbbbbbbbbbb ddddd ffffffffff hhhhhhhhh
The mountains are marked 'a', 'b', etc. Obviously, mountain b is widest with width 28.
Hint: Sometimes it's easiest to find a mountain's width by knowing where its highest parts are.
입력 형식
- Line 1: A single integer: N
- Lines 2..N+1: Line i+1 contains a single integer: H_i </ul>
- Line 1: A single line with a single integer that is the width of the widest mountain. </ul>
출력 형식
예제 입력
7
3
2
3
5
4
1
6
예제 출력
5
힌트
The height measurements are 3, 2, 3, 5, 4, 1, 6.</p>
The widest mountain consists of the measurements 2, 3, 5, 4, 1. Other mountains include 3, 2 and 1, 6
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