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Problem DescriptionKiki likes traveling. One day she finds a magic lamp, unfortunately the genie in the lamp is not so kind. Kiki must answer a questi 阅读全文
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问题描述 Adam and Eve play a card game using a regular deck of 52 cards. The rules are simple. The players sit on opposite sides of a table, facing each o... 阅读全文
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The reflected binary code, also known as Gray code after Frank Gray, is a binary numeral system where two successive values differ in only onebit (bi... 阅读全文
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Problem DescriptionAs you know, when you want to hack someone's program, you must submit your test data. However sometimes you will submit invalid dat... 阅读全文