摘要: Grigory loves strings. Recently he found a metal strip on a loft. The strip had length n and consisted of letters "V" and "K". Unfortunately, rust has 阅读全文
posted @ 2017-08-21 22:52 阿波罗2003 阅读(649) 评论(0) 推荐(0) 编辑
摘要: Leha plays a computer game, where is on each level is given a connected graph with n vertices and m edges. Graph can contain multiple edges, but can n 阅读全文
posted @ 2017-08-21 22:20 阿波罗2003 阅读(469) 评论(0) 推荐(0) 编辑