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题面： 传送门 B. Hoofball Input file: standard input Output file: standard output Time limit: 5 second Memory limit: 512 megabytes In preparation for the upco 阅读全文
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题面： E. Convention Input file: standard input Output file: standard output Time limit: 1 second Memory limit: 256 megabytes Cows from all over the world 阅读全文
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题面： C. Mooyo Mooyo Input file: standard input Output file: standard output Time limit: 1 second Memory limit: 256 megabytes With plenty of free time on 阅读全文