摘要：
The task of this problem is simple: insert a sequence of distinct positive integers into a hash table, and output the positions of the input numbers. 阅读全文
posted @ 2018-04-18 19:45
王清河
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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 @ 2018-04-10 19:22
王清河
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Given a sequence of positive integers and another positive integer p. The sequence is said to be a "perfect sequence" if M <= m * p where M and m are 阅读全文
posted @ 2018-03-29 12:28
王清河
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Given a collection of number segments, you are supposed to recover the smallest number from them. For example, given {32, 321, 3214, 0229, 87}, we can 阅读全文
posted @ 2018-03-29 11:54
王清河
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Given any permutation of the numbers {0, 1, 2,..., N-1}, it is easy to sort them in increasing order. But what if Swap(0, *) is the ONLY operation tha 阅读全文
posted @ 2018-03-28 15:01
王清河
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The magic shop in Mars is offering some magic coupons. Each coupon has an integer N printed on it, meaning that when you use this coupon with a produc 阅读全文
posted @ 2018-03-28 10:44
王清河
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With highways available, driving a car from Hangzhou to any other city is easy. But since the tank capacity of a car is limited, we have to find gas s 阅读全文
posted @ 2018-03-27 15:48
王清河
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Mooncake is a Chinese bakery product traditionally eaten during the Mid-Autumn Festival. Many types of fillings and crusts can be found in traditional 阅读全文
posted @ 2018-03-27 09:20
王清河
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给定数字0-9各若干个。你可以以任意顺序排列这些数字，但必须全部使用。目标是使得最后得到的数尽可能小（注意0不能做首位）。例如：给定两个0，两个1，三个5，一个8，我们得到的最小的数就是10015558。 现给定数字，请编写程序输出能够组成的最小的数。 输入格式： 每个输入包含1个测试用例。每个测试 阅读全文
posted @ 2018-03-27 08:27
王清河
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Eva loves to collect coins from all over the universe, including some other planets like Mars. One day she visited a universal shopping mall which cou 阅读全文
posted @ 2018-03-27 08:12
王清河
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