原创 codeforces D. Exams

Vasiliy has an exam period which will continue for n days. He has to pass exams on m subjects. Subjects are numbered fr

原创 codeforces 768C - Jon Snow and his Favourite Number

Jon Snow now has to fight with White Walkers. He has n rangers, each of which has his own strength. Also Jon Snow has

原创 codeforces 733B - Parade

Very soon there will be a parade of victory over alien invaders in Berland. Unfortunately, all soldiers died in the war

原创 codeforce 386(div2) D. Green and Black Tea

Innokentiy likes tea very much and today he wants to drink exactly n cups of tea. He would be happy to drink more but

原创 HDU 1533Going Home(費用流)

Problem Description On a grid map there are n little men and n houses. In each unit time, every little man can move one

原创 codeforces C. Buns

Lavrenty, a baker, is going to make several buns with stuffings and sell them. Lavrenty has n grams of dough as well as

原创 codeforces 742B - Arpa’s obvious problem and Mehrdad’s terrible solution

B. Arpa’s obvious problem and Mehrdad’s terrible solution time limit per test 1 second memory limit per test 256 meg

原创 codeforce B. Bash Big Day

Bash has set out on a journey to become the greatest Pokemon master. To get his first Pokemon, he went to Professor Zul

原创 NYOJ 括號匹配(二)(區間dp)

描述     給你一個字符串,裏面只包含"(",")","[","]"四種符號,請問你需要至少添加多少個括號才能使這些括號匹配起來。     如:     []是匹配的     ([])[]是匹配的     ((]是不匹配的     ([

原创 777D - Cloud of Hashtags

D. Cloud of Hashtags time limit per test 2 seconds memory limit per test 256 megabytes input standard input ou