具体的证明:点击打开链接 我的想法: 要想保证题目所说 构造最小行的和,仅仅能是这样的情况 ..... m-3 m-2 m-1 m | m m-1 m-2 m-3 . .... 所以Ans 也就是取前N项就可. 又由于 It is guaranteed that N is always odd. 显然构造没问题. #include <cstdio> #include <cstring> #include <iostream> #i…
Fast Arrangement Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 3563 Accepted Submission(s): 1024 Problem Description Chinese always have the railway tickets problem because of its' huge amo…
Problem Description Chinese always have the railway tickets problem because of its' huge amount of passangers and stations. Now goverment need you to develop a new tickets query system.One train can just take k passangers. And each passanger can just…
题目链接:https://vjudge.net/problem/HDU-4109 题目大意 有 N 个指令,标号从 0 ~ N - 1,和 M 个指令间的先后关系,每个关系都有一个权值 w,表示后一个指令在前一个指令开始时间之后 w 纳秒才开始执行.现在要并发执行这些指令,问最少要多长时间才能执行完? 分析 关键路径模板题,有多个源点和汇点,答案为所有汇点的最早开始时间的最大值. 代码如下 #include <bits/stdc++.h> using namespace std; #defin…