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C. Queue in the Train There are 𝑛 seats in the train's car and there is exactly one passenger occupying every seat. The seats are numbered from 1 to 阅读全文
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D2. The World Is Just a Programming Task (Hard Version) This is a harder version of the problem. In this version, 𝑛≤300000. Vasya is an experienced d 阅读全文
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B. Grow The Tree Gardener Alexey teaches competitive programming to high school students. To congratulate Alexey on the Teacher's Day, the students ha 阅读全文
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A. Integer Points DLS and JLS are bored with a Math lesson. In order to entertain themselves, DLS took a sheet of paper and drew 𝑛 distinct lines, gi 阅读全文
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A. Ivan the Fool and the Probability Theory Recently Ivan the Fool decided to become smarter and study the probability theory. He thinks that he under 阅读全文
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E. Connected Components? You are given an undirected graph consisting of n vertices and edges. Instead of giving you the edges that exist in the graph 阅读全文
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C. Sum Balance Ujan has a lot of numbers in his boxes. He likes order and balance, so he decided to reorder the numbers. There are 𝑘 boxes numbered f 阅读全文
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D. 0 1 MST Ujan has a lot of useless stuff in his drawers, a considerable part of which are his math notebooks: it is time to sort them out. This time 阅读全文
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C. Tile Painting Ujan has been lazy lately, but now has decided to bring his yard to good shape. First, he decided to paint the path from his house to 阅读全文
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B2. Character Swap (Hard Version) This problem is different from the easy version. In this version Ujan makes at most 2𝑛 swaps. In addition, 𝑘≤1000, 阅读全文
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B1. Character Swap (Easy Version) This problem is different from the hard version. In this version Ujan makes exactly one exchange. You can hack this 阅读全文
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A. Maximum Square Ujan decided to make a new wooden roof for the house. He has 𝑛 rectangular planks numbered from 1 to 𝑛. The 𝑖 th plank has size � 阅读全文
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F. Equalizing Two Strings You are given two strings s and t both of length n and both consisting of lowercase Latin letters. In one move, you can choo 阅读全文
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E. Yet Another Division Into Teams There are n students at your university. The programming skill of the i th student is ai. As a coach, you want to d 阅读全文
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D. Binary String Minimizing You are given a binary string of length n (i. e. a string consisting of n characters '0' and '1'). In one move you can swa 阅读全文
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C. Platforms Jumping There is a river of width n. The left bank of the river is cell 0 and the right bank is cell n+1 (more formally, the river can be 阅读全文
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B. Minimize the Permutation You are given a permutation of length n. Recall that the permutation is an array consisting of n distinct integers from 1 阅读全文
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A. Payment Without Change You have a coins of value n and b coins of value 1. You always pay in exact change, so you want to know if there exist such 阅读全文
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F. Daniel and Spring Cleaning While doing some spring cleaning, Daniel found an old calculator that he loves so much. However, it seems like it is bro 阅读全文
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E. Hyakugoku and Ladders Hyakugoku has just retired from being the resident deity of the South Black Snail Temple in order to pursue her dream of beco 阅读全文
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D. Shichikuji and Power Grid Shichikuji is the new resident deity of the South Black Snail Temple. Her first job is as follows: There are 𝑛 new citie 阅读全文
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C. Constanze's Machine Constanze is the smartest girl in her village but she has bad eyesight. One day, she was able to invent an incredible machine! 阅读全文
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F. Tree Factory Bytelandian Tree Factory produces trees for all kinds of industrial applications. You have been tasked with optimizing the production 阅读全文
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E. Rock Is Push You are at the top left cell (1,1) of an n×m labyrinth. Your goal is to get to the bottom right cell (n,m). You can only move right or 阅读全文
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B2. TV Subscriptions (Hard Version) The only difference between easy and hard versions is constraints. The BerTV channel every day broadcasts one epis 阅读全文
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A. Forgetting Things Kolya is very absent minded. Today his math teacher asked him to solve a simple problem with the equation 𝑎+1=𝑏 with positive i 阅读全文
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D. Power Products You are given n positive integers a1,…,an, and an integer k≥2. Count the number of pairs i,j such that 1≤i using namespace std; cons 阅读全文
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C. p binary Vasya will fancy any number as long as it is an integer power of two. Petya, on the other hand, is very conservative and only likes a sing 阅读全文
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F. Bits And Pieces 题面 You are given an array 𝑎 of 𝑛 integers. You need to find the maximum value of 𝑎𝑖|(𝑎𝑗&𝑎𝑘) over all triplets (𝑖,𝑗,𝑘) su 阅读全文
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G. Polygons Description You are given two integers 𝑛 and 𝑘. You need to construct 𝑘 regular polygons having same circumcircle, with distinct number 阅读全文
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B. Tokitsukaze and Mahjong time limit per test1 second memory limit per test256 megabytes Tokitsukaze is playing a game derivated from Japanese mahjon 阅读全文
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D2. RGB Substring (hard version) inputstandard input outputstandard output The only difference between easy and hard versions is the size of the input 阅读全文
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D. Yet Another Subarray Problem You are given an array $a_1, a_2, \dots , a_n$ and two integers $m$ and $k$. You can choose some subarray $a_l, a_{l+1 阅读全文
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C. Array Splitting You are given a sorted array 𝑎1,𝑎2,…,𝑎𝑛 (for each index 𝑖 1 condition 𝑎𝑖≥𝑎𝑖−1 holds) and an integer 𝑘. You are asked to d 阅读全文
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机器学习算法讲堂（一） 十分钟入门机器学习算法竞赛 比赛地址：https://www.kaggle.com/c/new york city taxi fare prediction import pandas as pd import numpy as np http://pandas.pydata 阅读全文
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相关下载地址： 链接: https://pan.baidu.com/s/1LqFWMoLzaKkuahwnZNIsZg 密码: 3ybi 阅读全文
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最近的任务是写一个多线程的东西，就得接触多线程队列了，我反正是没学过分布式的，代码全凭感觉写出来的，不过运气好，代码能够work= = 话不多说，直接给代码吧，一个多消费者，多生产者的模式。假设我的任务是求队列的中位数是啥，每消费10000次的时候，我要知道中位数是什么。 至于加不加锁，这个看你了， 阅读全文
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https://vjudge.net/contest/202940 overview 不断更新 阅读全文
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中午醒来后就滚去公司读了几篇论文，读的头脑不清醒。然后听说最近有一个动漫电影上线了，就一拍即合，和吴队长一起去看了。 看之前和吴队长都不知道这个电影是什么，就知道是个日本动漫，不过看到广告语说：“去年看了你的名字，今年你就得去看烟花”，在我的心里面，我就觉得这个电影应该就和你的名字应该是一个地位了吧 阅读全文
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提交代码被leader批判了一波。。。。 好好学习，天天向上。 http://zh google styleguide.readthedocs.io/en/latest/google cpp styleguide/contents/ 阅读全文