10 2019 档案

[CodeForces 466C] Number of Ways
摘要：Given an array that has n integers, count the number of ways to split all elements of this array into 3 contiguous parts so that the sum of each part 阅读全文
posted @ 2019-10-29 02:10 Review->Improve 阅读(504) 评论(0) 推荐(0)
[LintCode] Climbing Stairs
摘要：You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you cl 阅读全文
posted @ 2019-10-28 10:23 Review->Improve 阅读(190) 评论(0) 推荐(0)
[Codeforces] MultiSet
摘要：Consider a multiset of integers S, the union of n closed intervals of positive integers: S = [l1..r1] ∪ [l2..r2] ∪ · · · ∪ [ln..rn](recall that a clos 阅读全文
posted @ 2019-10-25 05:55 Review->Improve 阅读(248) 评论(0) 推荐(0)
[Codeforces] Too Many Segments
摘要：Smaller input size: https://codeforces.com/contest/1249/problem/D1 Big input size: https://codeforces.com/contest/1249/problem/D2 Given n segments on 阅读全文
posted @ 2019-10-25 04:56 Review->Improve 阅读(589) 评论(0) 推荐(0)
[Daily Coding Problem 331] Minimum Flips to make XY string
摘要：You are given a string consisting of the letters x and y, such as xyxxxyxyy. In addition, you have an operation called flip, which changes a single x  阅读全文
posted @ 2019-10-25 00:48 Review->Improve 阅读(1300) 评论(0) 推荐(0)
[LeetCode 1234] Replace the Substring for Balanced String
摘要：You are given a string containing only 4 kinds of characters 'Q', 'W', 'E' and 'R'. A string is said to be balanced if each of its characters appears  阅读全文
posted @ 2019-10-21 22:30 Review->Improve 阅读(1257) 评论(0) 推荐(0)
[Codeforces] Different ways to pack present.
摘要：Given n kinds of present and m boxes. Find out the different ways to pack all boxes with presents, using the following rules. 1. Each box can not have 阅读全文
posted @ 2019-10-18 11:25 Review->Improve 阅读(155) 评论(0) 推荐(0)
[LeetCode 1224] Maximum Equal Frequency
摘要：Given an array nums of positive integers, return the longest possible length of an array prefix of nums, such that it is possible to remove exactly on 阅读全文
posted @ 2019-10-14 03:10 Review->Improve 阅读(759) 评论(0) 推荐(0)
[LeetCode 1223] Dice Roll Simulation
摘要：A die simulator generates a random number from 1 to 6 for each roll. You introduced a constraint to the generator such that it cannot roll the number  阅读全文
posted @ 2019-10-14 01:42 Review->Improve 阅读(1469) 评论(0) 推荐(0)
[LeetCode 920] Number of Music Playlists
摘要：Your music player contains N different songs and she wants to listen to L (not necessarily different) songs during your trip. You create a playlist so 阅读全文
posted @ 2019-10-11 11:09 Review->Improve 阅读(337) 评论(0) 推荐(0)