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Given a positive integer n, write a program to find out a nonzero multiple m of n whose decimal representation contains only the digits 0 and 1. You m 阅读全文
posted @ 2019-09-25 17:02
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Anadi has a set of dominoes. Every domino has two parts, and each part contains some dots. For every aa and bb such that 1≤a≤b≤61≤a≤b≤6, there is exac 阅读全文
posted @ 2019-09-24 23:03
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The only difference between the easy and the hard versions is the maximum value of kk. You are given an infinite sequence of form "112123123412345……" 阅读全文
posted @ 2019-09-24 21:09
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Dawid has four bags of candies. The ii-th of them contains aiai candies. Also, Dawid has two friends. He wants to give each bag to one of his two frie 阅读全文
posted @ 2019-09-24 12:56
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Ania has a large integer SS. Its decimal representation has length nn and doesn't contain any leading zeroes. Ania is allowed to change at most kk dig 阅读全文
posted @ 2019-09-24 12:53
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在国际象棋里，王是最重要的一个棋子。每一步，王可以往上下左右或者对角线方向移动一步，如下图所示 给定两个格子 A(r1c1) B(r2c2)，你的任务是计算出一个王从 A到 B至少需要走多少步。为了避免题目太简单，我们从棋盘里拿掉了一个格子 C(r3c3)（ABC保证互不相同），要求王从 A走到 B 阅读全文
posted @ 2019-09-23 23:23
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Given a sequence a[1]a[2]a[3]......a[n] your job is to calculate the max sum of a sub-sequence. For example given (6-154-7) the max sum in this sequen 阅读全文
posted @ 2019-09-22 16:37
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有个脑筋急转弯是这样的：有距离很近的一高一低两座桥，两次洪水之后高桥被淹了两次，低桥却只被淹了一次，为什么？答案是：因为低桥太低了，第一次洪水退去之后水位依然在低桥之上，所以不算“淹了两次”。举例说明： 假定高桥和低桥的高度分别是5和2，初始水位为1 第一次洪水：水位提高到6（两个桥都被淹），退到2 阅读全文
posted @ 2019-09-22 16:36
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There is a white sheet of paper lying on a rectangle table. The sheet is a rectangle with its sides parallel to the sides of the table. If you will ta 阅读全文
posted @ 2019-09-22 08:16
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Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a point N (0 ≤ N ≤ 100,000) on a numb 阅读全文
posted @ 2019-09-21 14:27
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