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B. One Bomb time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given a description of a depot. It is a rectangula

链接：http://codeforces.com/contest/793/problem/B 题目大意，你有一个起点有一个终点，你要从起点到终点去，但是你转弯的次数不可以大于2次。问是否可以到达。 解法：BFS找到一个方向直接把这个方向一直走走到不能走为止，所有点压入进去，并且记录一下转弯次数，大于2则退出。 代码如下： #include using namespace std; cons

3-palindrome time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output In the beginning of the new year Keivan decided

http://codeforces.com/problemset/problem/455/A 题意：选取一个数字AK，然后获得AK分数，序列中AK + 1 和 AK - 1的数字会被删除。然后重复，直到序列为空。 解法：好久没写过DP了，已经完全不会写了，即使这是一道超级基础的DP。 很明显，我们不知道选取哪个数字比较好，选取一个数字后有很明显的后效性，导致ak+1和ak

A. Toda 2 time limit per test 2 seconds memory limit per test 512 megabytes input standard input output standard output A group of n friends enjoys playing popular video

B. Chris and Magic Square time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output ZS the Coder and Chris the Baboon

Plane of Tanks: Pro Vasya has been playing Plane of Tanks with his friends the whole year. Now it is time to divide the participants into several categories depending on their results. A player

A. Launch of Collider time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output There will be a launch of a new, powerful and u

C. Vacations time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vasya has n days of vacations! So he decided to improve h

Description Vasya plays Robot Bicorn Attack. The game consists of three rounds. For each one a non-negative integer amount of points is given. The result of the game is the sum of obtained point