题意大概就是有n框苹果放在长度为L的环上,每框有ai个苹果.你有一个容量为k的框.要你从0点处出发,随意走.框满了就回到0点把苹果放在那里.继续走直到把苹果都拿完为止.问你最少要走多少路程. 首先贪心的策略,无论往哪边走,碰到苹果就拿,拿满就滚回去. 然后碰到走一个半圈,框还剩下容量的情况,就须要dp了.主要是L为偶数的时候,若L/2的位置有苹果,该算是哪个半圈拿比較好呢? 当然也能够继续贪心,然而太麻烦了.直接dp. 而且由此贪心能够知道若存在须要走一圈的情况.肯定最多走一次一圈. 我们把苹果…

Codeforces Round #257 (Div. 1) C Codeforces Round #257 (Div. 1) E CF450E C. Jzzhu and Apples time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Jzzhu has picked n apples from his big apple tre…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5303 题意:在一个长为L的环形路径上种着一些苹果树,告诉你苹果树的位置(题目中以0~L指示坐标)及苹果树上的苹果数,现在你要采集所有的苹果(大概是你有一个容量为K的筐,你采集的苹果要装在筐里,采集完要回到坐标0的家里清空筐),问你最少需要走多少路 解:可以想象最多需要走一次整环,剩下的是走两个半环,那么分别对两个半环贪心(由于数据量较小,有很优雅的姿势~) 然后考虑走的这一次整环,由于这次整环的花费…

Pick apples Time Limit: 1000MS Memory limit: 165536K 题目描述 Once ago, there is a mystery yard which only produces three kinds of apples. The number of each kind is infinite. A girl carrying a big bag comes into the yard. She is so surprised because she…

Delicious Apples Problem's Link: http://acm.hdu.edu.cn/showproblem.php?pid=5303 Mean: 一条长为L的环形路上种着n棵苹果数. 第i棵苹果数的位置在xi,有ai个苹果,苹果树的位置按顺时针顺序给出,且都是整数. 在0位置有一个仓库,有一个容量为k的篮子,需要使用这个篮子将所有苹果收到仓库中来,求全过程的最短路. analyse: 首先来分析: 跑整圈的情况只可能出现一次.因为根据贪心的思想,摘完一个单边上最后那颗苹…

Pick apples Time Limit: 1000MS Memory limit: 165536K 题目描述 Once ago, there is a mystery yard which only produces three kinds of apples. The number of each kind is infinite. A girl carrying a big bag comes into the yard. She is so surprised because she…

从客户端(content="<span class="Apple-s...")中检测到有潜在危险的 Request.Form 值. 说明: 请求验证过程检测到有潜在危险的客户端输入值,对请求的处理已经中止.该值可能指示存在危及应用程序安全的尝试,如跨站点脚本攻击.若要允许页面重写应用程序请求验证设置,请将 httpRuntime 配置节中的 requestValidationMode 特性设置为 requestValidationMode="2.0"…

Alice and Bob decided to eat some fruit. In the kitchen they found a large bag of oranges and apples. Alice immediately took an orange for herself, Bob took an apple. To make the process of sharing the remaining fruit more fun, the friends decided to…

Pick apples Time Limit: 1000MS Memory Limit: 165536KB Submit Statistic Discuss Problem Description Once ago, there is a mystery yard which only produces three kinds of apples. The number of each kind is infinite. A girl carrying a big bag comes into…

Problem B. Harvest of Apples Time Limit: / MS (Java/Others) Memory Limit: / K (Java/Others) Total Submission(s): Accepted Submission(s): Problem Description There are n apples on a tree, numbered to n. Count the number of ways to pick at most m apple…