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Code Lock Problem Description A lock you use has a code system to be opened instead of a key. The lock contains a sequence of wheels. Each wheel has t 阅读全文
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Einbahnstrasse Problem Description Einbahnstra e (German for a one-way street) is a street on which vehicles should only move in one direction. One re 阅读全文
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A Walk Through the Forest Problem Description Jimmy experiences a lot of stress at work these days, especially since his accident made working difficu 阅读全文
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D. Chloe and pleasant prizes time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output D. Chloe an 阅读全文