2017 年 5月随笔档案 - Crutain

Codeforces 431C. k-Tree

摘要：Quite recently a creative student Lesha had a lecture on trees. After the lecture Lesha was inspired and came up with the tree of his own which he cal 阅读全文

posted @ 2017-05-30 13:04 Crutain 阅读(457) 评论(0) 推荐(1)

Codeforces 750B. Spider Man

摘要：Peter Parker wants to play a game with Dr. Octopus. The game is about cycles. Cycle is a sequence of vertices, such that first one is connected with t 阅读全文

posted @ 2017-05-27 11:06 Crutain 阅读(248) 评论(0) 推荐(0)

Codeforces 463A. Caisa and Sugar

摘要：Caisa is going to have a party and he needs to buy the ingredients for a big chocolate cake. For that he is going to the biggest supermarket in town. 阅读全文

posted @ 2017-05-19 21:24 Crutain 阅读(223) 评论(0) 推荐(0)

Codeforces 701B. Cells Not Under Attack

摘要：Vasya has the square chessboard of size n × n and m rooks. Initially the chessboard is empty. Vasya will consequently put the rooks on the board one a 阅读全文

posted @ 2017-05-18 21:24 Crutain 阅读(331) 评论(0) 推荐(0)

Codeforces 445A. DZY Loves Chessboard

摘要：DZY loves chessboard, and he enjoys playing with it. He has a chessboard of n rows and m columns. Some cells of the chessboard are bad, others are goo 阅读全文

posted @ 2017-05-18 14:57 Crutain 阅读(289) 评论(0) 推荐(0)

Codeforces 453B. Fedya and Maths

摘要：Fedya studies in a gymnasium. Fedya's maths hometask is to calculate the following expression: (1^n + 2^n + 3^n + 4^n) mod 5 for given value of n. Fed 阅读全文

posted @ 2017-05-15 15:21 Crutain 阅读(246) 评论(0) 推荐(0)

Codeforces 743A. Vladik and flights

摘要：Vladik is a competitive programmer. This year he is going to win the International Olympiad in Informatics. But it is not as easy as it sounds: the qu 阅读全文

posted @ 2017-05-15 14:47 Crutain 阅读(178) 评论(0) 推荐(0)

Codeforce 672B. Different is Good

摘要：A wise man told Kerem "Different is good" once, so Kerem wants all things in his life to be different. Kerem recently got a string s consisting of low 阅读全文

posted @ 2017-05-13 00:25 Crutain 阅读(240) 评论(0) 推荐(0)

Codeforce 580C. Kefa and Park

摘要：Kefa decided to celebrate his first big salary by going to the restaurant. He lives by an unusual park. The park is a rooted tree consisting of n vert 阅读全文

posted @ 2017-05-11 14:37 Crutain 阅读(231) 评论(0) 推荐(0)

Codeforce 545D. Queue

摘要：Little girl Susie went shopping with her mom and she wondered how to improve service quality. There are n people in the queue. For each person we know 阅读全文

posted @ 2017-05-05 21:30 Crutain 阅读(279) 评论(0) 推荐(0)

Codeforce 573A. Bear and Poker

摘要：Limak is an old brown bear. He often plays poker with his friends. Today they went to a casino. There are nplayers (including Limak himself) and right 阅读全文

posted @ 2017-05-05 20:12 Crutain 阅读(274) 评论(0) 推荐(0)