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Ostap and Partners Time limit: 2.0 secondMemory limit: 64 MB Workman Ivan lost his job. Not because of truancy or being late, and not because the plan 阅读全文
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Disk Tree Time limit: 2.0 secondMemory limit: 64 MB Hacker Bill has accidentally lost all the information from his workstation's hard drive and he has 阅读全文
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Crazy Professor Time limit: 1.0 secondMemory limit: 64 MB Professor Nathan Mathan is crazy about mathematics. For an unknown reason, he started to wri 阅读全文