shunfurh 于 2017.09.10 18:47 提问
- Count the Regions
What's the maximum number of regions definable by N zig-zag lines, each of which consists of two parallel infinite half-lines joined by a straight line segment?
Here is an example of 2 zig-zag lines yield 12 regions at the most.
The input consists of a sequence of N (<= 10000), which is the number of the zig-zag lines, one per line.
For each N, you should output the number of the maximum regions.
- devmiao 2017.09.27 21:52