随笔分类 - 简单_基础专题
摘要：Problem description George has recently entered the BSUCP (Berland State University for Cool Programmers). George has a friend Alex who has also enter
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摘要：Problem description Those days, many boys use beautiful girls' photos as avatars in forums. So it is pretty hard to tell the gender of a user at the f
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摘要：Problem description A soldier wants to buy w bananas in the shop. He has to pay k dollars for the first banana, 2k dollars for the second one and so o
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摘要：Problem description A guy named Vasya attends the final grade of a high school. One day Vasya decided to watch a match of his favorite hockey team. An
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摘要：Problem description Polycarpus is the director of a large corporation. There are n secretaries working for the corporation, each of them corresponds v
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摘要：Problem description Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the
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摘要：Problem description HQ9+ is a joke programming language which has only four one-character instructions: "H" prints "Hello, World!", "Q" prints the sou
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摘要：Problem description There are n students in a school class, the rating of the i-th student on Codehorses is ai. You have to form a team consisting of
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摘要：Problem description You've got a 5 × 5 matrix, consisting of 24 zeroes and a single number one. Let's index the matrix rows by numbers from 1 to 5 fro
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摘要：Problem description Alyona's mother wants to present an array of n non-negative integers to Alyona. The array should be special. Alyona is a capriciou
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摘要：Problem description Linear Kingdom has exactly one tram line. It has n stops, numbered from 1 to n in the order of tram's movement. At the i-th stop a
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摘要：Problem description As you may know, MemSQL has American offices in both San Francisco and Seattle. Being a manager in the company, you travel a lot b
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摘要：Problem description Programmer Rostislav got seriously interested in the Link/Cut Tree data structure, which is based on Splay trees. Specifically, he
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摘要：Problem description One day three best friends Petya, Vasya and Tonya decided to form a team and take part in programming contests. Participants are u
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摘要：Problem description We often go to supermarkets to buy some fruits or vegetables, and on the tag there prints the price for a kilo. But in some superm
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摘要：Problem description Eleven wants to choose a new name for herself. As a bunch of geeks, her friends suggested an algorithm to choose a name for her. E
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摘要：Problem description Fafa owns a company that works on huge projects. There are n employees in Fafa's company. Whenever the company has a new project t
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摘要：Problem description Luba thinks about watering her garden. The garden can be represented as a segment of length k. Luba has got n buckets, the i-th bu
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摘要：Problem description We consider a positive integer perfect, if and only if the sum of its digits is exactly 10. Given a positive integer k, your task
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摘要：Problem description Little girl Tanya is learning how to decrease a number by one, but she does it wrong with a number consisting of two or more digit
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