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There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From a tile, he can move to one of four adjacent tiles. But he can'

The doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maze began to shake, and the doggie could feel the ground sinking. He realized that the bone

The GeoSurvComp geologic survey company is responsible for detecting underground oil deposits. GeoSurvComp works with one large rectangular region of land at a time, and creates a grid that divides th

 Fox Ciel is playing a mobile puzzle game called "Two Dots". The basic levels are played on a board of size n × m cells, like this:Each cell contains a dot that has some color. We will use diffe...

链接：https://www.nowcoder.com/acm/contest/76/A来源：牛客网题目描述 随着海上运输石油泄漏的问题，一个新的有利可图的行业正在诞生，那就是撇油行业。如今，在墨西哥湾漂浮的大量石油，吸引了许多商人的目光。这些商人们有一种特殊的飞机，可以一瓢略过整个海面20米乘10米这么大的长方形。（上下相邻或者左右相邻的格子，不能斜着来）当然，这要求一瓢撇过去的全部是油，如果...

C. Sorting by Subsequencestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou are given a sequence a1, a2, ..., an consisting of ...

A. Make a triangle!time limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputMasha has three sticks of length aa, bb and cc centimeters re...