ACboy needs your help again! Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 11427    Accepted Submission(s): 5750 Problem Description ACboy was kidnapped!! he miss his mother very much and is v…

目录 题目地址 题干 代码和解释 参考 题目地址 hdu1702 题干 代码和解释 本题很简单,只要掌握STL stack和STL vector的语法即可作答.记录本题是为了记录STL vector的操作. 注意需要#include<stack>和#include<vector>. 这里是c++代码. #include<iostream> #include<stack> #include<queue> #include<string.h&g…

ACboy needs your help again! Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4429    Accepted Submission(s): 2260 Problem Description ACboy was kidnapped!! he miss his mother very much and is ve…

ACboy needs your help again! Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 10095    Accepted Submission(s): 5066 Problem Description ACboy was kidnapped!! he miss his mother very much and is v…

ACboy has N courses this term, and he plans to spend at most M days on study.Of course,the profit he will gain from different course depending on the days he spend on it.How to arrange the M days for the N courses to maximize the profit? Input The in…

//2089之前忘做了,周二C语言课上做,至于2086,写题解的时候突然发现之前的做法是错的,新的解法交上去CE,等周二再弄吧,其余题目暂时可以放心 HDU2080 夹角有多大II 题目链接 Problem Description 这次xhd面临的问题是这样的:在一个平面内有两个点,求两个点分别和原点的连线的夹角的大小. 注:夹角的范围[0,180],两个点不会在圆心出现. Input 输入数据的第一行是一个数据T,表示有T组数据. 每组数据有四个实数x1,y1,x2,y2分别表示两个点的坐标,…

分组背包需求 有N件物品,告诉你这N件物品的重量以及价值,将这些物品划分为K组,每组中的物品互相冲突,最多选一件,求解将哪些物品装入背包可使这些物品的费用综合不超过背包的容量,且价值总和最大. 解题模板 和01背包很相似,就是在每一个组内枚举每一个物品,注意要先枚举背包容量之后枚举属于某个组的所有物品,这样的话才可以保证"每组中的物品互相冲突,最多选一件" for 所有的组k for v=V..0 for 所有的i属于组k dp[v]=max{dp[v],dp[v-weight[i]]…

我要举报本次校赛出题人的消极出题!!! 官方题解请戳:http://3.scnuacm2015.sinaapp.com/?p=89(其实就是一堆代码没有题解) A. 树链剖分数据结构板题 题目大意:我没看,看不懂. 基本思路:我不会. 参考代码:找Oyk老师和Czj老师去. B. The background of water problem 题目大意(大写加粗的水题):给定$N$个学生和他们$K$个科目的成绩$S_i$,再给出各科目$K_i$的权重顺序$Q_i$,求排名之后,拥有id为$X$的…

以下代码为了阅读方便,省去以下头文件: #include <iostream> #include <stdio.h> #include <math.h> #include <string.h> #include <time.h> #include <stdlib.h> #include <string> #include <bitset> #include <vector> #include <…

2561: 最小生成树(题解) Time Limit: 10 Sec  Memory Limit: 128 MBSubmit: 1628  Solved: 786 传送门:http://www.lydsy.com/JudgeOnline/problem.php?id=2561 Description 给定一个边带正权的连通无向图G=(V,E),其中N=|V|,M=|E|,N个点从1到N依次编号,给定三个正整数u,v,和L (u≠v),假设现在加入一条边权为L的边(u,v),那么需要删掉最少多少条…