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E. Parking Lot time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A parking lot in the City 阅读全文
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方老师与素数 Time Limit: 3000/1000MS (Java/Others) Memory Limit: 65535/65535KB (Java/Others) Submit Status 方老师最近很喜欢素数,他想玩一个游戏: 现在有两个44位的素数nn和mm,你一次可以改变nn的一位 阅读全文
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Sum Sum Sum Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description We call a positive number X P-number 阅读全文
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F. Video Cards time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Little Vlad is fond of pop 阅读全文