Wooden Sticks Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10423    Accepted Submission(s): 4287 Problem Description There is a pile of n wooden sticks. The length and weight of each stick ar…

Wooden Sticks Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 14126    Accepted Submission(s): 5842 Problem Description There is a pile of n wooden sticks. The length and weight of each stick a…

Wooden Sticks Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 22000    Accepted Submission(s): 8851 Problem Description There is a pile of n wooden sticks. The length and weight of each stick ar…

Wooden Sticks Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)        Total Submission(s): 23527    Accepted Submission(s): 9551 There is a pile of n wooden sticks. The length and weight of each stick are known in a…

本题一看就知道是最长不减序列了,一想就以为是使用dp攻克了. 只是那是个错误的思路. 我就动了半天没动出来.然后看了看别人是能够使用dp的,只是那个比較难证明其正确性,而其速度也不快.故此并非非常好的解决方法. 所以我就直接硬算.硬模拟选择出非减子序列,选完就出答案了. 思路: 1 依照长度排序 2 依照不减原则选择重量,选一个,消灭一个. 最后消灭完了,就处理完成,答案就自然出来了. 原来是一道披着dp的外套的模拟题啊!一道伪装成难题的简单题. 代码也能够写的非常简洁: #include <s…

题目链接>>> 转载于:https://www.cnblogs.com/Action-/archive/2012/07/03/2574800.html  题目大意: 给n根木棍的长度和重量.根据要求求出制作木棍的最短时间.建立第一个木棍需要1分钟,若是接着要制作的木棍重量和长度都比此木棍长就不需要建立的时间,若是没有,则再需要建立时间.求时间最小为多少. 解题思路: 对木棍的长度和重量进行排序,以长度为首要考虑.排序完后的不一定都是下一根木棍重量和长度都大于前一根的.于是,我们对排序后的…

#include <iostream>#include<stdio.h>#include<cmath>#include<algorithm>using namespace std;struct product{    int w;    int l;     bool operator<(product &p2)    {        if(w==p2.w)return l<=p2.l;        else return w<…

题意: 有 n 根木棒,长度和质量都已经知道,需要一个机器一根一根地处理这些木棒. 该机器在加工过程中需要一定的准备时间,是用于清洗机器,调整工具和模板的. 机器需要的准备时间如下: 1.第一根需要1min的准备时间: 2.在加工了一根长为 l ,重为 w 的木棒后,接着加工一根长为 l’(l <= l’),重为 w’ (w <= w’)的木棒是不需要任何准备时间的,否则需要1min时间. 求加工 n 根木棒所用的最少时间.例如现有长和重分别为(4,9),(5,2),(2,1),(3,5)和(…

题意:给出n个木头的重量wi,长度li,如果满足w[i+1]>=w[i]且l[i+1]>=l[i],则不用耗费另外的加工时间,问至少需要多长时间加工完这些木头. 第一次做这一题目也没有做出来---而且也是好久以前---于是又看题解了--- 发现和将木材按两个关键字(先按重量由大到小排,如果重量相等的话则按长度由大到小排)排序后,和导弹拦截系统是一样的了,求长度的最长上升子序列. 自己写的二分查找一直输不出结果----555555 后来用了题解里面的lower_bound函数 搜了一点lower…

Wooden Sticks Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 15564    Accepted Submission(s): 6405 Problem Description There is a pile of n wooden sticks. The length and weight of each stick a…

Wooden Sticks 点我挑战题目 题意分析 给出T组数据,每组数据有n对数,分别代表每个木棍的长度l和重量w.第一个木棍加工需要1min的准备准备时间,对于刚刚经加工过的木棍,如果接下来的木棍l和w均小于等于上一根木棍的l和w那么就不许要准备时间,否则的话还需要1min的准备时间.求解对于每组数据,所需要的最小的准备时间是多少. 贪心策略. 对木棍进行降序排序,首要关键字是l,次要关键字是w(可以颠倒).然后选取最顶端的木棍,向下遍历,对于当前木棍,若l和w均小于等于顶层木棍,那么标记它…

作为杭电的老师,最盼望的日子就是每月的8号了,因为这一天是发工资的日子,养家糊口就靠它了,呵呵  但是对于学校财务处的工作人员来说,这一天则是很忙碌的一天,财务处的小胡老师最近就在考虑一个问题:如果每个老师的工资额都知道,最少需要准备多少张人民币,才能在给每位老师发工资的时候都不用老师找零呢?  这里假设老师的工资都是正整数,单位元,人民币一共有100元.50元.10元.5元.2元和1元六种. Input 输入数据包含多个测试实例,每个测试实例的第一行是一个整数n(n<100),表示老师的人数,…

http://acm.hdu.edu.cn/showproblem.php?pid=1051 Problem Description There is a pile of n wooden sticks. The length and weight of each stick are known in advance. The sticks are to be processed by a woodworking machine in one by one fashion. It needs s…

Codeforces Round #258 (Div. 2) Game With Sticks A. Game With Sticks time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output After winning gold and silver in IOI 2014, Akshat and Malvika want to hav…

Monster 题目链接: http://acm.hust.edu.cn/vjudge/contest/123554#problem/I Description Teacher Mai has a kingdom. A monster has invaded this kingdom, and Teacher Mai wants to kill it. Monster initially has h HP. And it will die if HP is less than 1. Teache…

排序 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 30009    Accepted Submission(s): 8326 Problem Description 输入一行数字,如果我们把这行数字中的‘5’都看成空格,那么就得到一行用空格分割的若干非负整数(可能有些整数以‘0’开头,这些头部的‘0’应该被忽略掉,除非这个整数就是由若…

Wooden Sticks Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 12443    Accepted Submission(s): 5167 Problem Description There is a pile of n wooden sticks. The length and weight of each stick ar…

Hard Code Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=95149#problem/A Description Some strange code is sent to Da Shan High School. It's said to be the prophet's note. The note is extremely hard t…

H - RobotTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=87326#problem/H Description A robot is a mechanical or virtual artificial agent, usually an electro-mechanical machine that is guided by a com…

Problem Description We divide the HZNU Campus into N*M grids. As you can see from the picture below, the green grids represent the buidings. Given the size of the HZNU Campus, and the color of each grid, you should count how many green grids in the N…

Problem Description 给定一系列2维平面点的坐标(x, y),其中x和y均为整数,要求用一个最小的长方形框将所有点框在内.长方形框的边分别平行于x和y坐标轴,点落在边上也算是被框在内. Input 测试输入包含若干测试用例,每个测试用例由一系列坐标组成,每对坐标占一行,其中|x|和|y|小于 231:一对0 坐标标志着一个测试用例的结束.注意(0, 0)不作为任何一个测试用例里面的点.一个没有点的测试用例标志着整个输入的结束. Output 对每个测试用例,在1行内输出2对整数…

排列2 Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 9583    Accepted Submission(s): 3485 Problem Description Ray又对数字的列产生了兴趣: 现有四张卡片,用这四张卡片能排列出很多不同的4位数,要求按从小到大的顺序输出这些4位数.   Input 每组数据占一行,代表四张卡片上…

Description There is a pile of n wooden sticks. The length and weight of each stick are known in advance. The sticks are to be processed by a woodworking machine in one by one fashion. It needs some time, called setup time, for the machine to prepare…

题目 There is a pile of n wooden sticks. The length and weight of each stick are known in advance. The sticks are to be processed by a woodworking machine in one by one fashion. It needs some time, called setup time, for the machine to prepare processi…

地址戳这.N根木棍待处理,每根有个长x宽y,处理第一根花费1代价,之后当处理到的后一根比前一根长或者宽要大时都要重新花费1代价,否则不花费.求最小花费代价.多组数据,N<=5000 本来是奔着贪心来做的.首先按照套路想到排序,长优先宽再次从小到大.由于要不浪费,尽量按照顺序去找,第一次把花费仅为1的最长子序列抽出来,标记之后,再循环找下一个未被标记的最长子序列保证只花费1,这样应该是最优的.但是鉴于$N$的范围和多组数据没敢这样做,虽然后来发现数据水这样也可以过.然后瞎想到把数对$(x,y)$抽…

A. Game With Sticks 题目连接: http://codeforces.com/contest/451/problem/A Description After winning gold and silver in IOI 2014, Akshat and Malvika want to have some fun. Now they are playing a game on a grid made of n horizontal and m vertical sticks. A…

Permutation Bo 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5753 Description There are two sequences h1∼hn and c1∼cn. h1∼hn is a permutation of 1∼n. particularly, h0=hn+1=0. We define the expression [condition] is 1 when condition is True,is 0 whe…

Sqrt Bo 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5752 Description Let's define the function f(n)=⌊n−−√⌋. Bo wanted to know the minimum number y which satisfies fy(n)=1. note:f1(n)=f(n),fy(n)=f(fy−1(n)) It is a pity that Bo can only use 1 unit…

Pet Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 181    Accepted Submission(s): 55 Problem Description One day, Lin Ji wake up in the morning and found that his pethamster escaped. He searche…

Shaking hands Time Limit: 20 Sec  Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5232 Description Today is Gorwin’s birthday, so she holds a party and invites her friends to participate. She will invite n friends, for convenience…