摘要:
Recently, you bought a brand new smart lamp with programming features. At first, you set up a schedule to the lamp. Every day it ... 阅读全文
摘要:
You are given nn segments on a coordinate line; each endpoint of every segment has integer coordinates. Some segments can degener... 阅读全文
摘要:
Codehorses has just hosted the second Codehorses Cup. This year, the same as the previous one, organizers are giving T-shirts for... 阅读全文