设$f[i][j][k]$表示前$i$个物品买了$j$个,消耗$k$个钻石,最少花多少钱,可以通过简单的DP求出. 枚举拥有的钻石数以及最多能购买的物品数的下界,那么钱数的下界是定值. 将$n$个箱子折半搜索,按钻石数分组并排序,枚举左半边每种方案,在右半边双指针求出总概率即可. 时间复杂度$O(nm2^{\frac{n}{2}}+nm^2)$. #include<cstdio> #include<algorithm> const int N=33,inf=~0U>>2…

Search GO 说明:输入题号直接进入相应题目,如需搜索含数字的题目,请在关键词前加单引号 Problem ID Title Source AC Submit Y 1000 A+B Problem 10983 18765 Y 1036 [ZJOI2008]树的统计Count 5293 13132 Y 1588 [HNOI2002]营业额统计 5056 13607 1001 [BeiJing2006]狼抓兔子 4526 18386 Y 2002 [Hnoi2010]Bounce 弹飞绵羊 43…

安装Fedora 24在试用虚拟机时发现无法ping通外网. 我傻傻地以为是软件问题. 问题描述: 尝试ping程序来测试网络连通性: (我之前也是ping百度,后来在为了少打字百度了一些比较短的域名. 比如: "to." , "g.cn" , "j.mp" 等等.) (http://wenku.baidu.com/link?url=oSb0I5xzI1UBhU3aKTXoWll7PYaIm0zNiORJbx_h6PlT-bURWFOCXkW9W…

题目链接: 传送门 Little Elephant and Cards time limit per test:2 second     memory limit per test:256 megabytes Description The Little Elephant loves to play with color cards. He has n cards, each has exactly two colors (the color of the front side and the…

 省赛B题....手写链表..其实很简单的.... 比赛时太急了,各种手残....没搞出来....要不然就有金了...注:对相邻的元素需要特判..... Problem B Boxes in a Line You have n boxes in a line on the table numbered 1~n from left to right. Your task is to simulate 4 kinds of commands: 1 X Y: move box X to the lef…

C. Inna and Candy Boxes   Inna loves sweets very much. She has n closed present boxes lines up in a row in front of her. Each of these boxes contains either a candy (Dima's work) or nothing (Sereja's work). Let's assume that the boxes are numbered fr…

boxes [英][bɒksɪz][美][bɑ:ksɪz] n.盒( box的名词复数 ); 一盒; 电视; 小亭; v.把…装入盒[箱,匣]中( box的第三人称单数 ); 拳击;   以上结果来自金山词霸…

B. Candy Boxes Problem's Link:   http://codeforces.com/contest/488/problem/B Mean: T题目意思很简单,不解释. analyse: 这道题还是很有意思的,需要考虑到各种情况才能AC. 解这个题目之前,首先要推出两条式子 x4=3x1 4x1=x2+x3 然后就是分类讨论,枚举各种情况就可. Time complexity: O(1) Source code:  // Memory Time // 1347K 0MS…

题目来源:https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=3&page=show_problem&problem=39  Stacking Boxes  Background Some concepts in Mathematics and Computer Science are simple in one or two dimensions but become…

9.10 You have a stack of n boxes, with widths w., heights hir and depths drThe boxes cannot be rotated and can only be stacked on top of one another if each box in the stack is strictly larger than the box above it in width, height, and depth. Implem…

#include <bits/stdc++.h> using namespace std; ]; ][]; ][][]; ][][][]; ][][][][]; ][][][][][]; ][][][][][][]; struct node{ ]; int step; }; map<int,int> Hash; ],b[],c[]; bool check(int a[],int num,int step){ //检查有没有走过 ){ ]]>=) return true; ]]…

题目地址:http://acm.sgu.ru/problem.php?contest=0&problem=126 /* 找规律,智商不够,看了题解 详细解释:http://blog.csdn.net/ahfywff/article/details/7432524 */ #include <cstdio> #include <cmath> #include <cstring> #include <string> #include <iostrea…

http://poj.org/problem?id=1475 http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=249 Pushing Boxes Time Limit: 2000MS   Memory Limit: 131072K Total Submissions: 4662   Accepted: 1608   Special Judge Description Imagine you are standing insid…

 Little Elephant and Chess Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 259A Description The Little Elephant loves chess very much. One day the Little Elephant and his friend decided…

Boxes Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Submit Status Practice UVALive 6500 #include<stdio.h> #include<string.h> int main() { int T,m,n; int i,j,s; ][]; scanf("%d",&T); while(T--) { s=; sc…

Suppose you want to give an option to user to select only 5 check boxes from given any number of check boxes in an Oracle Form and if user selects more than 5 than give a message that you can not select more than 5. For this follow these steps:Create…

 Balls and Boxes(盒子与球) Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Description 题目描述 Mr. Chopsticks is interested in random phenomena, and he conducts an experiment to study randomness. In the experiment, he thr…

C. Balls and Boxes time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Little Vasya had n boxes with balls in the room. The boxes stood in a row and were numbered with numbers from 1 to n from…

原文链接:http://www.zhangxinxu.com/wordpress/2010/01/css-float%E6%B5%AE%E5%8A%A8%E7%9A%84%E6%B7%B1%E5%85%A5%E7%A0%94%E7%A9%B6%E3%80%81%E8%AF%A6%E8%A7%A3%E5%8F%8A%E6%8B%93%E5%B1%95%E4%B8%80/ <p>这是一行普通的文字,这里有个 <em>em</em> 标签.</p> 这段HTML代…

UVa 103 题目大意:给定n个箱子,每个箱子有m个维度, 一个箱子可以嵌套在另一个箱子中当且仅当该箱子的所有的维度大小全部小于另一个箱子的相应维度, (注意箱子可以旋转,即箱子维度可以互换),求最多能套几个箱子. 第一行输入为n,m,之后是n行m维的箱子 解题思路:嵌套关系是二元关系,因此这题即在DAG上做动态规划, 只不过将二维的判断改成了n维,其他不变. 详细看考:DAG上的动态规划之嵌套矩形  (ps:这题可以理解成嵌套m边形) /* UVa 103 Stacking Boxes --…

function script_faster_rcnn_demo() close all; clc; clear mex; clear is_valid_handle; % to clear init_key run(fullfile(fileparts(fileparts(mfilename('fullpath'))), 'startup')); %% -------------------- CONFIG -------------------- opts.caffe_version = '…

A. Elephant 题目连接: http://www.codeforces.com/contest/617/problem/A Descriptionww.co An elephant decided to visit his friend. It turned out that the elephant's house is located at point 0 and his friend's house is located at point x(x > 0) of the coord…

C. Little Elephant and Shifts Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/problemset/problem/220/C Description The Little Elephant has two permutations a and b of length n, consisting of numbers from 1 to n, inclusive. Let's de…

C. GukiZ hates Boxes Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/551/problem/C Description Professor GukiZ is concerned about making his way to school, because massive piles of boxes are blocking his way. In total there…

Balls and Boxes 题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=5810 Description Mr. Chopsticks is interested in random phenomena, and he conducts an experiment to study randomness. In the experiment, he throws n balls into m boxes in such a manner t…

Boxes in a Line You have n boxes in a line on the table numbered 1 . . . n from left to right. Your task is to simulate 4 kinds of commands: ? 1 X Y : move box X to the left to Y (ignore this if X is already the left of Y ) ? 2 X Y : move box X to th…

Boxes Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://hihocoder.com/contest/acmicpc2015beijingonline/problem/7 Description There is a strange storehouse in PKU. In this storehouse there are n slots for boxes, forming a line. In each slot you can p…

Create image server with nginx + lua (Openresty) + graphicsmagick (Part I) | Ian's PhotograPhy Blog Create image server with nginx + lua (Openresty) + graphicsmagick (Part I) A list of base boxes for Vagrant - Vagrantbox.es…

http://www.modernanalyst.com/Resources/Articles/tabid/115/ID/2934/categoryId/23/Making-the-Elephant-Dance-Strategic-Enterprise-Analysis.aspx Many years ago, I attended a meeting held by a new CEO of an oil company. I was a stockholder and anticipated…

Problem C. GukiZ hates Boxes Solution: 假设最后一个非零的位置为K,所有位置上的和为S 那么答案的范围在[K+1,K+S]. 二分这个答案ans,然后对每个人尽量在ans时间内搬最多的砖.可以得出至少需要多少个人才能搬完.这个可以在O(n)的时间内利用贪心得到 只要判断需要的人数是否小于等于实际的人数就好了 时间复杂度O(nlogS) #include <bits/stdc++.h> using namespace std; ; int a[N]; int…