Again Prime? No Time.(uva10870+数论)】的更多相关文章

Again Prime? No time.Input: standard inputOutput: standard outputTime Limit: 1 second The problem statement is very easy. Given a number n you have to determine the largest power of m, not necessarily prime, that divides n!. Input The input file cons…
题目传送门 我们注意到,L,R是肥肠大的.........我们不可能在1s内筛出2^31内的全部质数. “上帝为你关上一扇门,同时为你打开一扇窗” 我们又注意到,R-L是肥肠比较小的,珂以从这入手解决问题. 我们知道,任意一个合数x一定包含不超过sqrt(n)的质因子. 所以我们就筛出2~sqrt(R)之间的所有素数,用他们来标记全部范围内的合数.最后没被标记的数就是质数,比较相邻的质数位置取最大. Code #include<cstdio> #include<cmath> #in…
Special Prime Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 738    Accepted Submission(s): 390 Problem Description Give you a prime number p, if you could find some natural number (0 is not in…
题目链接: 传送门 Prime Land Time Limit: 1000MS     Memory Limit: 10000K Description Everybody in the Prime Land is using a prime base number system. In this system, each positive integer x is represented as follows: Let {pi}i=0,1,2,... denote the increasing…
Prime Test Time Limit: 6000MS   Memory Limit: 65536K Total Submissions: 29046   Accepted: 7342 Case Time Limit: 4000MS Description Given a big integer number, you are required to find out whether it's a prime number. Input The first line contains the…
Prime Distance Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 12512   Accepted: 3340 Description The branch of mathematics called number theory is about properties of numbers. One of the areas that has captured the interest of number th…
参考链接http://blog.csdn.net/acm_cxlove/article/details/8264290http://blog.csdn.net/w00w12l/article/details/8212782 题意: 首先定义了一种叫做Reverse Prime的数:是一个7位数,倒置后是一个<=10^6的素数(如1000070) 然后要把所有的Reverse Prime求出来,排好序. 然后题目有2种操作: q x :求编号0到编号x的Reverse Prime的质因数个数的和…
题目链接: C. Bear and Prime 100 time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output This is an interactive problem. In the output section below you will see the information about flushing the outpu…
题目大意: S[n] 表示 集合{1,2,3,4,5.......n} 不存在连续元素的子集个数 Prime S 表示S[n]与之前的所有S[i]互质; 问 找到大于第K个PrimeS 能整除X 的第一个S[n] 并且 输出(S[n]/X)%M 1.斐波拉契阶段 很容易写出S[n]的各个值发现是斐波拉契数列 2 3 5 8 13 21 34 2.斐波拉契性质 gcd(fib(n),fib(m))=fib(gcd(n,m)) (从1开始计算的即 1 1 2 3 5 8序列) 所以只有当 gcd(n…
10140 - Prime Distance 题目链接 题意:求[l,r]区间内近期和最远的素数对. 思路:素数打表,打到sqrt(Max)就可以,然后利用大的表去筛素数.因为[l, r]最多100W.所以能够去遍历一遍.找出答案. 注意1的情况,一開始没推断1,结果WA了 代码: #include <stdio.h> #include <string.h> #include <algorithm> using namespace std; #define INF 0x…