2018年5月31日
B - Alyona and mex（构造）
摘要： Problem description Alyona's mother wants to present an array of n non-negative integers to Alyona. The array should be special. Alyona is a capriciou 阅读全文
posted @ 2018-05-31 19:50 霜雪千年 阅读(275) 评论(0) 推荐(0)
B - Taxi（贪心）
摘要： Problem description After the lessons n groups of schoolchildren went outside and decided to visit Polycarpus to celebrate his birthday. We know that 阅读全文
posted @ 2018-05-31 19:02 霜雪千年 阅读(420) 评论(0) 推荐(0)
C - Tram
摘要： Problem description Linear Kingdom has exactly one tram line. It has n stops, numbered from 1 to n in the order of tram's movement. At the i-th stop a 阅读全文
posted @ 2018-05-31 18:24 霜雪千年 阅读(259) 评论(0) 推荐(0)
A - High School: Become Human
摘要： Problem description Year 2118. Androids are in mass production for decades now, and they do all the work for humans. But androids have to go to school 阅读全文
posted @ 2018-05-31 15:13 霜雪千年 阅读(161) 评论(0) 推荐(0)
C - Crazy Town
摘要： Problem description Crazy Town is a plane on which there are n infinite line roads. Each road is defined by the equation aix + biy + ci = 0, where ai  阅读全文
posted @ 2018-05-31 14:45 霜雪千年 阅读(268) 评论(0) 推荐(0)