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摘要： Binary String Matching描述Given two strings A and B, whose alphabet consist only ‘0’ and ‘1’. Your task is only to tell how many times does A appear as ... 阅读全文

摘要： 1148 - Mad CountingMob was hijacked by the mayor of the Town "TruthTown". Mayor wants Mob to count the total population of the town. Now the naive app... 阅读全文

摘要： C. LineA line on the plane is described by an equationAx + By + C = 0. You are to find any point on this line, whose coordinates are integer numbers f... 阅读全文

摘要： Leapin' LizardsProblem DescriptionYour platoon of wandering lizards has entered a strange room in the labyrinth you are exploring. As you are looking ... 阅读全文

摘要： Interference Signal描述Dr.Kong’s laboratory monitor some interference signals. The interference signals can be digitized into a series of positive integ... 阅读全文

摘要： Distribution描述One day , Wang and Dong in the Dubai desert expedition, discovered an ancient castle. Fortunately, they found a map of the castle.The ma... 阅读全文

摘要： Flow ProblemProblem DescriptionNetwork flow is a well-known difficult problem for ACMers. Given a graph, your task is to find out the maximum flow for... 阅读全文

摘要： Proving EquivalencesProblem DescriptionConsider the following exercise, found in a generic linear algebra textbook.Let A be an n × n matrix. Prove tha... 阅读全文

摘要： Equivalent SetsProblem DescriptionTo prove two sets A and B are equivalent, we can first prove A is a subset of B, and then prove B is a subset of A, ... 阅读全文

摘要： Going from u to v or from v to u?DescriptionIn order to make their sons brave, Jiajia and Wind take them to a big cave. The cave has n rooms, and one-... 阅读全文