C# 输入一个整数,求质因数 List<int> results = new List<int>(); int number = Int32.Parse(Console.ReadLine()); ; i < number; i++) { && i != number) { results.Add(i); number /= i;//number=number/i; } } results.Add(number); foreach (var result in…

2020.12.20 求质因数的方法 CF1444A Division #include<bits/stdc++.h> #define ll long long #define fp(i,a,b) for(int i=a;i<=b;i++) #define sfp(i,a,b) for(int i=a;i<b;i++) const ll N = 1e6+10; using namespace std; ll t; ll p,q,cnt; ll a[N],cnt1[N],cnt2[N…

质数,质因数 应该都了解,在这里不过多解释,直接上代码: List<int> results = new List<int>(); int number = Int32.Parse(Console.ReadLine()); for (int pri = 2; pri < number; pri++) { while (number % pri == 0 && pri != number) { results.Add(pri); number /= pri; }…

Number Sequence Time Limit: 10000/3000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 895 Accepted Submission(s): 374 Problem Description Given a number sequence b1,b2…bn.Please count how many number sequences a1,a2,..…

做题记录:2016-08-08 描述 给出N个数字,试求质因数最大的数字. 输入格式 第一行,一个整数N,表示数字个数.接下来N行,每行一个整数A_i,表示给出的数字. 输出格式 一个整数,表示质因数最大的数字. 测试样例1 输入 4 36 38 40 42 输出 38 备注 N <= 5000 , A_i <= 20000 代码 #include<iostream> #include<cmath> #include<cstdio> #define N 20…

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…

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <math.h> int main(int argc, char **argv) { unsigned , i = , max = ; ) { printf("argument error\n"); ; } ]) > ) { printf("out of range\n"); ;…

Description Tomorrow is contest day, Are you all ready?  We have been training for 45 days, and all guys must be tired.But , you are so lucky comparing with many excellent boys who have no chance to attend the Province-Final. Now, your task is relaxi…

Problem Description Given 5 integers: a, b, c, d, k, you're to find x in a...b, y in c...d that GCD(x, y) = k. GCD(x, y) means the greatest common divisor of x and y. Since the number of choices may be very large, you're only required to output the t…

Counting Divisors Problem Description In mathematics, the function d(n) denotes the number of divisors of positive integer n. For example, d(12)=6 because 1,2,3,4,6,12 are all 12's divisors. In this problem, given l,r and k, your task is to calculate…