[hdu P4334] Trouble Hassan is in trouble. His mathematics teacher has given him a very difficult problem called 5-sum. Please help him. The 5-sum problem is defined as follows: Given 5 sets S_1,...,S_5 of n integer numbers each, is there a_1 in S_1,.…

Trouble Time Limit: 5000MS   Memory Limit: 32768KB   64bit IO Format: %I64d & %I64u Submit Status Description Hassan is in trouble. His mathematics teacher has given him a very difficult problem called 5-sum. Please help him. The 5-sum problem is def…

Trouble Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3526    Accepted Submission(s): 1113 Problem Description Hassan is in trouble. His mathematics teacher has given him a very difficult pro…

Trouble Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5681    Accepted Submission(s): 1570 Problem Description Hassan is in trouble. His mathematics teacher has given him a very difficult pro…

Trouble Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5388    Accepted Submission(s): 1494 Problem Description Hassan is in trouble. His mathematics teacher has given him a very difficult pro…

给定五个集合.问是否能从五个集合各取一个元素,使得元素之和为0. 这道题有两种做法,一种是哈希,然而之前没写过哈希.....比赛后从大神那copy了一份. 这里说还有一种. 对于这五个集合分为三组.1,2组求和为一组,3,4组求和分为一组,5为一组. 那么如今转化为了是否能从前两组中各取一个元素.使得这两个值和为第三组一个元素的相反数. 那么对于第一组我们升序排序.第二组我们降序排序. 对于第三组里的任一元素,假如第一组队首加第二组队首之和大于第三组的元素.那么第二组游标往后移一位,反之第一组移…

hdu 3591  The trouble of Xiaoqian 题意:xiaoqi要买一个T元的东西,当前的货币有N种,xiaoqi对于每种货币有Ci个:题中定义了最小数量即xiaoqi拿去买东西的钱的张数加上店家找的零钱的张数(店家每种货币有无限多张,且找零是按照最小的数量找零的):问xiaoqi买元东西的最小数量? 多重背包+完全背包: 思路:这个最小数量是拿去买东西的张数和找零的张数之和,其实我们只需要将这两个步骤分开,开算出能买T元东西的前i最少f[i]张,这里涉及到容量问题:容量只…

HDU 3591 The trouble of Xiaoqian(多重背包+全然背包) pid=3591">http://acm.hdu.edu.cn/showproblem.php? pid=3591 题意: 有一个具有n种货币的货币系统, 每种货币的面值为val[i]. 如今小杰手上拿着num[1],num[2],-num[n]个第1种,第2种-第n种货币去买价值为T(T<=20000)的商品, 他给售货员总价值>=T的货币,然后售货员(可能,假设小杰给的钱>T,那肯…

Hassan is in trouble. His mathematics teacher has given him a very difficult problem called 5-sum. Please help him. The 5-sum problem is defined as follows: Given 5 sets S_1,...,S_5 of n integer numbers each, is there a_1 in S_1,...,a_5 in S_5 such t…

The trouble of Xiaoqian Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2166    Accepted Submission(s): 773 Problem Description In the country of ALPC , Xiaoqian is a very famous mathematician.…