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RSS订阅原创 POJ2378 - Tree Cutting
DescriptionAfter Farmer John realized that Bessie had installed a "tree-shaped" network among his N (1 <= N <= 10,000) barns at an incredible cost, he sued Bessie to mitigate his losses.Bessi...
2018-08-03 22:39:08
232
原创 POJ2955 - Brackets
descriptionWe give the following inductive definition of a “regular brackets” sequence:the empty sequence is a regular brackets sequence, if s is a regular brackets sequence, then (s) and [s] are...
2018-08-02 16:22:27
516
原创 CodeForces 672D - Robin Hood
descriptionWe all know the impressive story of Robin Hood. Robin Hood uses his archery skills and his wits to steal the money from rich, and return it to the poor.There are n citizens in Kekoland,...
2018-07-24 21:27:15
236
原创 HDU5144 - NPY and Shot
descriptionNPY is going to have a PE test.One of the test subjects is throwing the shot.The height of NPY is H meters.He can throw the shot at the speed of v0 m/s and at the height of exactly H mete...
2018-07-24 20:30:24
351
原创 CodeForces Round #354 - Vasya and String
descriptionHigh school student Vasya got a string of length n as a birthday present. This string consists of letters 'a' and 'b' only. Vasya denotes beauty of the string as the maximum length of a s...
2018-07-24 17:40:01
137
原创 CodeForces 782B - The Meeting Place Cannot Be Changed
descriptionThe main road in Bytecity is a straight line from south to north. Conveniently, there are coordinates measured in meters from the southernmost building in north direction.At some points...
2018-07-24 16:27:59
240
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