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Shortest Prefixes Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 21642 Accepted: 9269 Description A prefix of a string is a substring star 阅读全文
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Monthly Expense Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 34725 Accepted: 12983 Description Farmer John is an astounding accounting w 阅读全文
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Cable master 求电缆的最大长度（二分法) Description Inhabitants of the Wonderland have decided to hold a regional programming contest. The Judging Committee has vo 阅读全文