题目:click here 题意:看hint就懂了 分析:数论小题,在n0.5时间里求n的质因子数 #include <bits/stdc++.h> using namespace std; typedef long long ll; int n, x; ll ans; void solve() { ans = ; ; i*i<=x; i++ ) { if( i <= n ) { && x/i <= n ) { ; ; } } else break; } pr
In a given array nums of positive integers, find three non-overlapping subarrays with maximum sum. Each subarray will be of size k, and we want to maximize the sum of all 3*k entries. Return the result as a list of indices representing the starting p
A number whose only prime factors are 2,3,5 or 7 is called a humble number. The sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 27, ... shows the first 20 humble numbers. Now given a humble number, please write a program t
买卖股票的最佳时机 假设有一个数组,它的第i个元素是一支给定的股票在第i天的价格.如果你最多只允许完成一次交易(例如,一次买卖股票),设计一个算法来找出最大利润. 样例 给出一个数组样例 [3,2,3,1,2], 返回 1 解题 法一:直接暴力,时间发杂度O(N2) public class Solution { /** * @param prices: Given an integer array * @return: Maximum profit */ public int maxProfi
Problem Description A factory produces products packed in square packets of the same height h and of the sizes 1*1, 2*2, 3*3, 4*4, 5*5, 6*6. These products are always delivered to customers in the square parcels of the same height h as the products h
七夕节 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 56666 Accepted Submission(s): 18239 Problem Description 七夕节那天,月老来到数字王国,他在城门上贴了一张告示,并且和数字王国的人们说:"你们想知道你们的另一半是谁吗?那就按照告示上的方法去找吧!"人们纷纷来到告示