这题被出题人给活活坑了,题目居然理解错了..哎,不想多说. 题意:给两组数,A组为幸运基数,B组为不幸运的基数,问在[low,high]区间内有多少个数:至少被A组中一个数整除,并且不被B中任意一个数整除.|A|<=15. 分析:看到A长度这么小,以及求区间内满足条件的个数问题,容易想到容斥原理,因为不被B中任意一个数整除,所以将B数组所有数取一个最小公倍数LCM,那么就变成了幸运数字都不会被这个LCM整除. 然后枚举子集,实现要将A中元素去除相互整除的情况,比如A = [2,4],这时因为被至…

Lucky Number Time Limit: 5000ms Memory Limit: 32768KB This problem will be judged on ZJU. Original ID: 323364-bit integer IO format: %lld      Java class name: Main   Watashi loves M mm very much. One day, M mm gives Watashi a chance to choose a numb…

Description A lucky number is a number whose decimal representation contains only the digits \(4\) and \(7\). An almost lucky number is a number that is divisible by a lucky number. For example, \(14\), \(36\) and \(747\) are almost lucky, but \(2\)…

Lucky Number Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 294    Accepted Submission(s): 49 Problem Description “Ladies and Gentlemen, It’s show time! ” “A thief is a creative artist who ta…

当进制转换后所剩下的为数较少时(2位.3位),相应的base都比較大.能够用数学的方法计算出来. 预处理掉转换后位数为3位后,base就小于n的3次方了,能够暴力计算. . .. Lucky Number Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 521    Accepted Submission(s): 150 Probl…

转载请注明文本链接 http://blog.csdn.net/yangnanhai93/article/details/40441709 题目链接地址:http://ac.jobdu.com/problem.php?pid=1380 第一次这么正式的去写这个ACM的算法的博客,感觉这个题目给我的触动有点大,非常多时候很多其它的算法须要观察,须要细心的品味题目,才可以有:"啊哈,算法"--<编程珠玑> 先说下自己的惯性思路吧,由于这个题目就是非常明显一个统计的问题,所以,我一…

水题 #include<cstdio> #include<cstring> #include<cmath> #include<algorithm> using namespace std; int T; ; ]; int tot; int main() { scanf("%d",&T); while(T--){ flag=;tot=; scanf("%d",&n); ==) flag=; else{ w…

题目描述: 每个人有自己的lucky number,小A也一样.不过他的lucky number定义不一样.他认为一个序列中某些数出现的次数为n的话,都是他的lucky number.但是,现在这个序列很大,他无法快速找到所有lucky number.既然这样,他就想找到那些不是lucky number. 输入: 输入有两行. 第一行有n和m.n表示出现次数为n的是lucky number,m表示序列的长度.2<=n<=10,m<=10^6,m%n!=0. 第二行为序列元素,每个元素都是…

A. Nearly Lucky Number time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations con…

Problem description Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the lucky digits 4 and 7. For example, numbers 47, 744, 4 are lucky and 5, 17, 467 are not. Unfortunate…