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http://acm.hdu.edu.cn/showproblem.php?pid=2523学习哈希和注意i++,后要--i； SORT AGAINTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3479Accepted Submission(s): 1107 Problem Description给你N个整数,x1,x2...xn，任取两个整数组合得到|xi-xj|,(0#include#includeusing namespace std 阅读全文
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学习二分查找+排序。一定用c++程序 sort用法；http://acm.hdu.edu.cn/showproblem.php?pid=2141 Can you find it?Time Limit: 10000/3000 MS (Java/Others)Memory Limit: 32768/10000 K (Java/Others) Total Submission(s): 8557Accepted Submission(s): 2230 Problem DescriptionGive you three sequences of numbers A, B, C, then we give 阅读全文
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http://acm.hdu.edu.cn/showproblem.php?pid=2199学习方程求解用二分法。注意1e-6而不是0； Can you solve this equation?Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 6172Accepted Submission(s): 2886 Problem DescriptionNow,given the equation 8*x^4 + 7*x^3 + 2*x^2 + 3*x 阅读全文
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http://acm.hdu.edu.cn/showproblem.php?pid=2817学习 ：//(a × b) mod c=( (a mod c) × b) mod c. （a+b）mod c=（a mod c+b mod c）mod c；在题目中我们总会遇到 a^b mod n 所以我们必须用 快速幂取模算法，下面就是快速快速幂取模算法，这些强制类型转换应该要多学习学习。题意是等比数列或者等差数列，求第k个数。求余200907。 A sequence of numbersTime Limit: 2000/1000 MS (Java/Others) Memory L 阅读全文
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http://acm.hdu.edu.cn/status.php Alfredo's Pizza RestaurantTime Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1732 Accepted Submission(s): 1023 Problem DescriptionTraditionally after the Local Contest, judges and contestants go to their favourit 阅读全文
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Problem HTime Limit : 4000/2000ms (Java/Other) Memory Limit : 65536/32768K (Java/Other)Total Submission(s) : 24 Accepted Submission(s) : 8Problem DescriptionA positive number y is called magic number if for every positive integer x it satisfies that put y to the right of x, which will form a new in. 阅读全文
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http://acm.hdu.edu.cn/showproblem.php?pid=1019Least Common MultipleTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 25035 Accepted Submission(s): 9429 Problem DescriptionThe least common multiple (LCM) of a set of positive integers is the smallest 阅读全文
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http://acm.hdu.edu.cn/showproblem.php?pid=2066一个人的旅行Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 15272 Accepted Submission(s): 5186 Problem Description虽然草儿是个路痴（就是在杭电待了一年多，居然还会在校园里迷路的人，汗~),但是草儿仍然很喜欢旅行，因为在旅途中 会遇见很多人（白马王子，^0^），很多事，还能丰富自己的阅历，还可以看美 阅读全文
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Just a HookTime Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 13918 Accepted Submission(s): 6886 Problem DescriptionIn the game of DotA, Pudge’s meat hook is actually the most horrible thing for most of the heroes. The hook is made up of several co. 阅读全文
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Who Gets the Most Candies?Time Limit : 10000/5000ms (Java/Other) Memory Limit : 262144/131072K (Java/Other)Total Submission(s) : 15 Accepted Submission(s) : 7Problem DescriptionN children are sitting in a circle to play a game.The children are numbered from 1 to N in clockwise order. Each of them h. 阅读全文