57one

2019年11月24日

摘要： There is a public bike service in Hangzhou City which provides great convenience to the tourists from all over the world. One may rent a bike at any s 阅读全文

posted @ 2019-11-24 16:19 57one 阅读(667) 评论(0) 推荐(0) 编辑

1017 Queueing at Bank (25 分)

摘要： Suppose a bank has K windows open for service. There is a yellow line in front of the windows which devides the waiting area into two parts. All the c 阅读全文

posted @ 2019-11-24 13:47 57one 阅读(246) 评论(0) 推荐(0) 编辑

2019年11月23日

1016 Phone Bills (25 分)

摘要： A long-distance telephone company charges its customers by the following rules: Making a long-distance call costs a certain amount per minute, dependi 阅读全文

posted @ 2019-11-23 16:42 57one 阅读(130) 评论(0) 推荐(0) 编辑

1015 Reversible Primes (20 分)

摘要： A reversible prime in any number system is a prime whose "reverse" in that number system is also a prime. For example in the decimal system 73 is a re 阅读全文

posted @ 2019-11-23 14:55 57one 阅读(212) 评论(0) 推荐(0) 编辑

1014 Waiting in Line (30 分)

摘要： Suppose a bank has N windows open for service. There is a yellow line in front of the windows which devides the waiting area into two parts. The rules 阅读全文

posted @ 2019-11-23 14:19 57one 阅读(519) 评论(0) 推荐(0) 编辑

1013 Battle Over Cities (25 分)

摘要： It is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, all the highways from/toward that c 阅读全文

posted @ 2019-11-23 13:23 57one 阅读(201) 评论(0) 推荐(0) 编辑

1012 The Best Rank (25 分)

摘要： To evaluate the performance of our first year CS majored students, we consider their grades of three courses only: C - C Programming Language, M - Mat 阅读全文

posted @ 2019-11-23 11:24 57one 阅读(134) 评论(0) 推荐(0) 编辑

2019年11月15日

1011 World Cup Betting (20 分)

摘要： With the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing ba 阅读全文

posted @ 2019-11-15 16:11 57one 阅读(112) 评论(0) 推荐(0) 编辑

1010 Radix (25 分)

摘要： Given a pair of positive integers, for example, 6 and 110, can this equation 6 = 110 be true? The answer is yes, if 6 is a decimal number and 110 is a 阅读全文

posted @ 2019-11-15 15:32 57one 阅读(193) 评论(0) 推荐(0) 编辑

2019年11月14日

1008 Elevator (20 分)

摘要： The highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which floors the elev 阅读全文

posted @ 2019-11-14 20:24 57one 阅读(175) 评论(0) 推荐(0) 编辑

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