Number Sequence Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 187893 Accepted Submission(s): 46820 Problem Description A number sequence is defined as follows: f(1) = 1, f(2) = 1, f(n) = (A…
Problem Description A number sequence is defined as follows: f(1) = 1, f(2) = 1, f(n) = (A * f(n - 1) + B * f(n - 2)) mod 7. Given A, B, and n, you are to calculate the value of f(n). Input The input consists of multiple test cases. Each test case co…
A Simple Problem with Integers 这个题目首先要打表找规律,这个对2018取模最后都会进入一个循环节,这个循环节的打表要用到龟兔赛跑. 龟兔赛跑算法 floyed判环算法 这个算法我觉得还是很有意思的,可以学习一下. 不过这个题目这个算法打表还是有点难写的. 由这个算法可以得到这个循环节的最大长度是6 最大入环距离是4. 为什么有些循环节不是6,还是可以用6呢,因为每个元素平方最大周期为6,且6是其他所有周期的公倍数. 然后学完之后还是不太会这个题目怎么写,2018…
B. Position in Fraction time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You have a fraction . You need to find the first occurrence of digit c into decimal notation of the fraction after de…
Birthday Toy Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 644 Accepted Submission(s): 326 Problem Description AekdyCoin loves toys. It is AekdyCoin’s Birthday today and he gets a special “…
题目链接 Problem Description KazaQ wears socks everyday. At the beginning, he has n pairs of socks numbered from 1 to n in his closets. Every morning, he puts on a pair of socks which has the smallest number in the closets. Every evening, he puts this pa…
转自:http://www.cnblogs.com/kevince/p/3887827.html 首先声明一下,这里的规律指的是循环,即找到最小循环周期. 这么一说大家心里肯定有数了吧,“不就是next数组性质的应用嘛”,没错,正是如此. 在ACM的比赛中有些时候会遇到一些题目,可以或必须通过找出数据的规律来编写代码,这里我们专门来讨论下 如何运用KMP中next数组的性质 来寻找一个长数组中的最小循环周期. 先来看一道题 ZOJ 3785 What day is that day? Time…
Problem E. Matrix from Arrays Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 1384 Accepted Submission(s): 630 Problem Description Kazari has an array A length of L, she plans to generate a…
E. Mahmoud and Ehab and the xor-MST dp/数学/找规律 题意 给出一个完全图的阶数n(1e18),点由0---n-1编号,边的权则为编号间的异或,问最小生成树是多少 思路 由于一个数k和比他小的数异或,一定可以取到k与所有正整数形成的异或值的最小值.这里简单得形式化证明一下 假设一个数为1000110 那么他的最佳异或和为010(即留下最靠近右边的1其他全部置0) 我们定义\(lsb(x)=x\And(-x)\)由字符形的变量编码我们可以知道,这就可以取得x最…
2014多校 第八题 1008 2014 Multi-University Training Contest 8 4952 Number Transformation Number Transformation Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 85 Accepted Submission(s): 31 Problem Descr…
Number Sequence Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 152357 Accepted Submission(s): 37087 Problem Description A number sequence is defined as follows: f(1) = 1, f(2) = 1, f(n) = (A…