Sum Zero Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others) Problem Description There are 5 Integer Arrays and each of them contains no more than 300 integers whose value are between -100,000,000 and 100,000,000, You…

Eight Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 13956    Accepted Submission(s): 3957 Special Judge Problem Description The 15-puzzle has been around for over 100 years; even if you don'…

HDOJ(HDU).1258 Sum It Up (DFS) [从零开始DFS(6)] 点我挑战题目 从零开始DFS HDOJ.1342 Lotto [从零开始DFS(0)] - DFS思想与框架/双重DFS HDOJ.1010 Tempter of the Bone [从零开始DFS(1)] -DFS四向搜索/奇偶剪枝 HDOJ(HDU).1015 Safecracker [从零开始DFS(2)] -DFS四向搜索变种 HDOJ(HDU).1016 Prime Ring Problem (DF…

题目大意: 给你一个总和(total)和一列(list)整数,共n个整数,要求用这些整数相加,使相加的结果等于total,找出所有不相同的拼凑方法. 例如,total = 4,n = 6,list = [4,3,2,2,1,1]. 有四种不同的方法使得它们相加的结果等于total(即等于4),分别为:4,3+1,2+2, 2+1+1. 在同一种拼凑方式中,每个数字不能被重复使用,但是在list中可能存在许多相等的数字. 输入: 输入包含许多测试用例,每个用例仅占一行.每个用例包含t(total)…

题意:给你一串字符串s,再给你两个数字m l,问你s中可以分出多少个长度为m*l的子串,并且子串分成m个长度为l的串每个都不完全相同 首先使用BKDRHash方法把每个长度为l的子串预处理成一个数字,接着根据题意直接map判重 BKDRHash:一种常用字符串hash,hash简单来说就是把一串字符串通过一些转化成为一个数字,并保证相同字符串转化的数字一样,不相同字符串转化的数字一定不一样.方法就是hash[i]=hash[i-1]*seed(进制)+str[i]-'a'+1(注意要加一,因为不…

Sum Problem's Link:   http://acm.hdu.edu.cn/showproblem.php?pid=4704 Mean: 给定一个大整数N,求1到N中每个数的因式分解个数的总和. analyse: N可达10^100000,只能用数学方法来做. 首先想到的是找规律.通过枚举小数据来找规律,发现其实answer=pow(2,n-1); 分析到这问题就简单了.由于n非常大,所以这里要用到费马小定理:a^n ≡ a^(n%(m-1)) * a^(m-1)≡ a^(n%(m-…

C - 最大连续子序列 Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1231 Appoint description: Description 给定K个整数的序列{ N1, N2, ..., NK },其任意连续子序列可表示为{ Ni, Ni+1, ..., Nj },其中 1 <= i <= j <= K.最大连续子…

Sum Time Limit:1000MS     Memory Limit:131072KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4704 Description   Sample Input 2   Sample Output 2 Hint 1. For N = 2, S(1) = S(2) = 1. 2. The input file consists of multiple test cases. 题意…

Intelligent IME Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=4287 Description We all use cell phone today. And we must be familiar with the intelligent English input method on the cell phone. To be specific,…

sum 题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=5776 Description Given a sequence, you're asked whether there exists a consecutive subsequence whose sum is divisible by m. output YES, otherwise output NO Input The first line of the input has an i…