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http://codeforces.com/contest/948/problem/AA. Protect SheepBob is a farmer. He has a large pasture with many sheep. Recently, he has lost some of them due to wolf attacks. He thus decided to pla...

You are given a tree (a connected undirected graph without cycles) of

You went to the store, selling

You are given a string

E. Superhero BattleA superhero fights with a monster. The battle consists of rounds, each of which lasts exactly

In Arcady’s garden there grows a peculiar apple-tree that fruits one time per year. Its peculiarity can be explained in following way: there are n inflorescences, numbered from 1 to n. Inflorescence n...

Anya and Kirill are doing a physics laboratory work. In one of the tasks they have to measure some value n times, and then compute the average value to lower the error.Kirill has already made his me...

The last stage of Football World Cup is played using the play-off system.There are n teams left in this stage, they are enumerated from 1 to n. Several rounds are held, in each round the remaining t...

Two friends are on the coordinate axis Ox in points with integer coordinates. One of them is in the point x1 = a, another one is in the point x2 = b.Each of the friends can move by one along the lin...

Alice and Bob begin their day with a quick game. They first choose a starting number X0 ≥ 3 and try to reach one million by the process described below.Alice goes first and then they take alternatin...

http://codeforces.com/contest/948/problem/CC. Producing SnowAlice likes snow a lot! Unfortunately, this year’s winter is already over, and she can’t expect to have any more of it. Bob has thus b...

难受啊///网卡的交不了题…多15分钟就能A了啊还是太菜了……扔一下垃圾代码：#include <iostream>#include <cstdio>#include <cstdlib>#include <cmath>#include <cstring>#include <algorithm>#include...