这个问题是存在做.我发现即使是可行的一个问题,但不一定正确. 大部分数据疲软,因为主题. id=1014">poj 1014 Dividing 题目大意:有6堆石头,权重分别为1 2 3 4 5 6,要求输入 每堆个数 ,求能否够平分石头使得两堆价值同样. 网上对这道题的做法就两种,当中有错误的版本号.却也能够AC. 起初这让我等菜鸟感慨代码的简洁,但无法得出正确性的证明 接下来就对两种方法的错误性进行证明. 1.多重背包 #include <map> #include<…

http://poj.org/problem?id=1014 题意:6个物品,每个物品都有其价值和数量,判断是否能价值平分. 思路: 多重背包.利用二进制来转化成0-1背包求解. #include<iostream> #include<string> #include<cstring> #include<cstdio> #include<algorithm> using namespace std; ; int sum; ]; int d[max…

原题目:http://poj.org/problem?id=1014 题目大意: 有分别价值为1,2,3,4,5,6的6种物品,输入6个数字,表示相应价值的物品的数量,问一下能不能将物品分成两份,是两份的总价值相等,其中一个物品不能切开,只能分给其中的某一方,当输入六个0是(即没有物品了),这程序结束,总物品的总个数不超过20000 输出:每个测试用例占三行: 第一行: Collection #k: k为第几组测试用例 第二行:是否能分(具体形式见用例) 第三行:空白(必须注意,否则PE) 一:…

题目链接:http://poj.org/problem?id=1014 背包问题太经典了,之前的一篇博客已经讲了背包问题的原理. 这一个题目是多重背包,但是之前的枚举是超时的,这里采用二进制优化. 这是所有01背包,完全背包,多重背包的模板哦! #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> using namespace std; int sum;…

Problem Description Marsha and Bill own a collection of marbles. They want to split the collection among themselves so that both receive an equal share of the marbles. This would be easy if all the marbles had the same value, because then they could…

Dividing Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 66032 Accepted: 17182 Description Marsha and Bill own a collection of marbles. They want to split the collection among themselves so that both receive an equal share of the marbles.…

Dividing Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 69575   Accepted: 18138 Description Marsha and Bill own a collection of marbles. They want to split the collection among themselves so that both receive an equal share of the marbl…

Dividing   Description Marsha and Bill own a collection of marbles. They want to split the collection among themselves so that both receive an equal share of the marbles. This would be easy if all the marbles had the same value, because then they cou…

题目:Dividing 题意:6种重量的的石头,每个给定数量,用总重的一半去装,问能否装满. #include <iostream> #include <algorithm> #include <stdlib.h> #include <time.h> #include <cmath> #include <cstdio> #include <string> #include <cstring> #include…

Dividing Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 63980   Accepted: 16591 Description Marsha and Bill own a collection of marbles. They want to split the collection among themselves so that both receive an equal share of the marbl…