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J. Usoperanto Time Limit: 8000ms Memory Limit: 256000KBUsoperanto is an artificial spoken language designed and regulated by Usoperanto Acade... 阅读全文
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C. Censor Time Limit: 2000ms Memory Limit: 65536KBfrog is now a editor to censor so-called sensitive words (敏感词).She has a long text p. Her j... 阅读全文
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B. Carries Time Limit: 1000ms Memory Limit: 65536KBfrog has n integers a1,a2,…,an, and she wants to add them pairwise.Unfortunately, frog is ... 阅读全文