Problem Description Given a sequence a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a sub-sequence. For example, given (6,-1,5,4,-7), the max sum in this sequence is 6 + (-1) + 5 + 4 = 14. Input The first line of the input contains…
Combination Sum Given a set of candidate numbers (C) (without duplicates) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. The same repeated number may be chosen from C unlimited number of times. Note:…
Three Sum: Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Note: The solution set must not contain duplicate triplets. 这是一道LeetCode中标记为Medium的…
Tow Sum 原题概述: Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not use the same element twice. Example: Given nums =…
http://acm.hdu.edu.cn/showproblem.php?pid=4825 Zeus 和 Prometheus 做了一个游戏,Prometheus 给 Zeus 一个集合,集合中包含了N个正整数,随后 Prometheus 将向 Zeus 发起M次询问,每次询问中包含一个正整数 S ,之后 Zeus 需要在集合当中找出一个正整数 K ,使得 K 与 S 的异或结果最大.Prometheus 为了让 Zeus 看到人类的伟大,随即同意 Zeus 可以向人类求助.你能证明人类的智慧…
题面 挺有意思的. 设f[i]表示gcd(i,j)=i的个数,g[i]表示k|gcd(i,j)的个数; g[i]=(n/i)*(n/i); g[i]=f[i]+f[2i]+f[3i]+...; 所以f[i]=g[i]-f[2i]-f[3i]-f[4i]-...... #include <bits/stdc++.h> #define int long long using namespace std; ]; signed main() { int n; cin>>n; ; ;i--)…
Sum 系列题解 Two Sum题解 题目来源:https://leetcode.com/problems/two-sum/description/ Description Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one sol…
Minimum Path Sum 题解 原创文章,拒绝转载 题目来源:https://leetcode.com/problems/minimum-path-sum/description/ Description Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its…
FXTZ II Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 498 Accepted Submission(s): 266 Problem Description Cirno is playing a fighting game called "FXTZ" with Sanae. Sanae is a ChuSho…
Curry: The idea of Curry is to spreate the data from the function. Using Curry to define the function logic and later pass the data into the function logic. Example1: const get = R.curry(function(prop, obj){ return obj[prop]; }); const obj1 = { foo:…
题意:1-n个位置中,每个位置填一个数,问至少有l个数是相同的概率. 可以转化求最多有l-1个数是相同的. dp[i][j]表示前i个位置填充j个位置的方案数,并且要满足上面的条件. 则: dp[i][j]=∑dp[i-1][j-k]*c[m-j+k][k]; 也就是看第i个数,可以不填,填一个位置,两个位置······这样累加过来. 代码如下: import java.math.*; import java.util.*; public class Main { public static v…
