hdu4320Arcane Numbers 1

题目链接:

http://acm.hdu.edu.cn/showproblem.php?pid=4320

题意:

将一个A进制下的有限小数转化为B进制看是否仍为有限小数

分析:

一个A进制的小数可以下次 左移动n位变成A进制整数

然后再将其转化为B进制即可 

即B^m/A^n要整除,因此A的质因子B必须得全部含有。

代码如下:

#include <iostream>
#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;

typedef long long LL;

bool check(LL a,LL b)
{
    for(LL i=2;i*i<=a;i++){
        if(a%i==0){
            if(b%i) return false;
            while(a%i==0) a/=i;
        }
    }
    if(b%a) return false;
    return true;
}

int main()
{
    int t,cas=1;
    scanf("%d",&t);
    while(t--){
        LL a,b;
        scanf("%I64d%I64d",&a,&b);
        printf("Case #%d: ",cas++);
        if(check(a,b))
            puts("YES");
        else
            puts("NO");
    }
    return 0;
}
时间: 2024-08-05 22:45:59

hdu4320Arcane Numbers 1的相关文章

LeetCode OJ - Sum Root to Leaf Numbers

这道题也很简单,只要把二叉树按照宽度优先的策略遍历一遍,就可以解决问题,采用递归方法越是简单. 下面是AC代码: 1 /** 2 * Sum Root to Leaf Numbers 3 * 采用递归的方法,宽度遍历 4 */ 5 int result=0; 6 public int sumNumbers(TreeNode root){ 7 8 bFSearch(root,0); 9 return result; 10 } 11 private void bFSearch(TreeNode ro

129. Sum Root to Leaf Numbers

Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a number. An example is the root-to-leaf path 1->2->3 which represents the number 123. Find the total sum of all root-to-leaf numbers. For example, 1 / 2 3 T

421. Maximum XOR of Two Numbers in an Array

Given a non-empty array of numbers, a0, a1, a2, - , an-1, where 0 ≤ ai < 231. Find the maximum result of ai XOR aj, where 0 ≤ i, j < n. Could you do this in O(n) runtime? Example: Input: [3, 10, 5, 25, 2, 8] Output: 28 Explanation: The maximum resul

Humble Numbers(丑数) 超详解!

给定一个素数集合 S = { p[1],p[2],...,p[k] },大于 1 且素因子都属于 S 的数我们成为丑数(Humble Numbers or Ugly Numbers),记第 n 大的丑数为 h[n]. 算法 1: 一种最容易想到的方法当然就是从 2 开始一个一个的判断一个数是否为丑数.这种方法的复杂度约为 O( k * h[n]),铁定超时(如果你这样做而没有超时,请跟 tenshi 联系) 算法 2: 看来只有一个一个地主动生成丑数了 : 我最早做这题的时候,用的是一种比较烂的

【Scala】Scala之Numbers

一.前言 前面已经学习了Scala中的String,接着学习Scala的Numbers. 二.Numbers 在Scala中,所有的数字类型,如Byte,Char,Double,Float,Int,Long,Short都是对象,这七种数字类型继承AnyVal特质,这七种数字类型与其在Java中有相同的范围,而Unit和Boolean则被认为是非数字值类型,Boolean有false和true两个值,你可以获取到各个数字类型的最值. 复杂的数字和日期 如果需要更强大的数类,可以使用spire,sc

2、Add Two Numbers

1.Add Two Numbers--这是leedcode的第二题: You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. Input:

[LeetCode In C++] 2. Add Two Numbers

题目: You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. Input: (2 -> 4 -> 3) + (5 -> 6 -&

[LeetCode] Compare Version Numbers

Question: Compare two version numbers version1 and version2.If version1 > version2 return 1, if version1 < version2 return -1, otherwise return 0. You may assume that the version strings are non-empty and contain only digits and the . character.The 

LeetCode --- 2. Add Two Numbers

题目链接:Add Two Numbers You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list. Input: (2 -> 4 -> 3