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  There is a sequence of integers. Your task is to find the longest subsequence that satisfies the following condition: the difference between the maximum element and the minimum element of the su...

FenceTime Limit: 1000MS   Memory Limit: 30000K Total Submissions: 5830   Accepted: 1857 DescriptionA team of k (1 <= K <= 100) workers should paint a fence which contains N (...

A histogram is a polygon composed of a sequence of rectangles aligned at a common base line. The rectangles have equal widths but may have different heights. For example, the figure on the left shows ...

Vasya has recently started to learn English. Now he needs to remember how to write English letters. He isn't sure about some of them, so he decided to train a little.He found a sheet of squared pape...

A festival will be held in a town's main street. There are n sections in the main street. The sections are numbered 1 through n from left to right. The distance between each adjacent sections is 1.I...