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摘要： 火车进出栈问题 题目描述 一列火车n节车厢，依次编号为1,2,3,…,n。每节车厢有两种运动方式，进栈与出栈，问n节车厢出栈的可能排列方式有多少种。 输入 一个数，n(n<=60000) 输出 一个数s表示n节车厢出栈的可能排列方式 样例输入 样例输出 思路： 易得答案为 第n项卡特兰数， 可以通过 阅读全文

摘要： Editor 题目描述 You are going to implement the most powerful editor for integer sequences.The sequence is empty when the editor is initialized.There are 5 阅读全文

摘要： Problem E. TeaTree Time Limit: 8000/4000 MS (Java/Others) Memory Limit: 524288/524288 K (Java/Others)Total Submission(s): 1248 Accepted Submission(s): 阅读全文

摘要： 问题 C: Crowd Control 题目描述 The BAPC draws a large number of visitors to Amsterdam. Many of these people arrive at the train station, then walk from inte 阅读全文

摘要： 4894: Booming Business 题目描述 You are an expert in bonsai, the Japanese art of cultivating small trees in small containers.Every year, you win the Bonsa 阅读全文

摘要： 8377: Playoff 题目描述 The Minato Mirai Football Association hosts its annual championship as a single round-robin tournament, in which each team plays a 阅读全文

摘要： Problem J. CSGO Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 524288/524288 K (Java/Others)Total Submission(s): 444 Accepted Submission(s): 220 阅读全文

摘要： Problem L.Videos Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 524288/524288 K (Java/Others)Total Submission(s): 163 Accepted Submission(s): 63 阅读全文

摘要： 问题 F: Making the Grade 题目描述 A straight dirt road connects two fields on FJ's farm, but it changes elevation more than FJ would like. His cows do not m 阅读全文

摘要： Description Mr. Young wishes to take a picture of his class. The students will stand in rows with each row no longer than the row behind it and the le 阅读全文