随笔分类 -  枚举

HDU 4403 A very hard Aoshu problem(DFS)
摘要：A very hard Aoshu problem Problem Description Aoshu is very popular among primary school students. It is mathematics, but much harder than ordinary ma 阅读全文
posted @ 2016-03-22 23:38 ACMSaga 阅读(239) 评论(0) 推荐(0)
HUST 1352 Repetitions of Substrings(字符串)
摘要：Repetitions of Substrings Description The “repetitions” of a string S(whose length is n) is a maximum number “k” such that: 1) k is a factor of n 2) S 阅读全文
posted @ 2016-02-18 13:28 ACMSaga 阅读(309) 评论(0) 推荐(0)
HDU 2058 The sum problem(枚举)
摘要：The sum problem Problem Description Given a sequence 1,2,3,......N, your job is to calculate all the possible sub-sequences that the sum of the sub-se 阅读全文
posted @ 2016-02-18 12:38 ACMSaga 阅读(203) 评论(0) 推荐(0)
HDU 1407 测试你是否和LTC水平一样高(枚举)
摘要：测试你是否和LTC水平一样高 Problem Description 大家提到LTC都佩服的不行，不过，如果竞赛只有这一个题目，我敢保证你和他绝对在一个水平线上！你的任务是：计算方程x^2+y^2+z^2= num的一个正整数解。 Input 输入数据包含多个测试实例，每个实例占一行，仅仅包含一个小 阅读全文
posted @ 2016-02-15 09:28 ACMSaga 阅读(197) 评论(0) 推荐(0)
UESTC 1272 Final Pan's prime numbers(乱搞)
摘要：题目链接 Description Final Pan likes prime numbers very much. One day, he want to find the super prime numbers.A prime numbers $n$($n$>4) is a super prime 阅读全文
posted @ 2016-02-02 20:21 ACMSaga 阅读(223) 评论(0) 推荐(0)
HDU 3835 R(N)(枚举)
摘要：题目链接 Problem Description We know that some positive integer x can be expressed as x=A^2+B^2(A,B are integers). Take x=10 for example, 10=(-3)^2+1^2.We 阅读全文
posted @ 2016-01-26 15:44 ACMSaga 阅读(147) 评论(0) 推荐(0)
HDU 1017 A Mathematical Curiosity(枚举)
摘要：题目链接 Problem Description Given two integers n and m, count the number of pairs of integers (a,b) such that 0 < a < b < n and (a^2+b^2 +m)/(ab) is an i 阅读全文
posted @ 2016-01-26 15:37 ACMSaga 阅读(191) 评论(0) 推荐(0)