将余数记录下来,如果余数相同,那么商的下一位也相同. #include <iostream> #include <cstdio> #include <cmath> #include <algorithm> #include <vector> #include <iomanip> #include <cstring> #include <map> #include <queue> #include &…

P1530 分数化小数 Fractions to Decimals 103通过 348提交 题目提供者该用户不存在 标签USACO 难度普及/提高- 提交  讨论  题解 最新讨论 暂时没有讨论 题目描述 写一个程序,输入一个形如N/D的分数(N是分子,D是分母),输出它的小数形式. 如果小数有循环节的话,把循环节放在一对圆括号中. 例如, 1/3 =0.33333333写成0.(3), 41/333 = 0.123123123...写成0.(123), 用xxx.0 等表示整数. 典型的转化例…

P1530 分数化小数 Fractions to Decimals 题意 题目描述 写一个程序,输入一个形如\(N/D\)的分数(\(N\)是分子,\(D\)是分母),输出它的小数形式.如果小数有循环节的话,把循环节放在一对圆括号中. 例如,\(1/3=0.33333333\)写成\(0.(3)\),\(41/333=0.123123123...\)写成\(0.(123)\),用\(xxx.0\)等表示整数.典型的转化例子: 1/3 = 0.(3) 22/5 = 4.4 1/7 = 0.(142…

1439: 2.4.5 Fractions to Decimals 分数化小数 时间限制: 1 Sec  内存限制: 64 MB 提交: 194  解决: 13 题目描述 写一个程序,输入一个形如N/D的分数(N是分子,D是分母),输出它的小数形式. 如果小数有循环节的话,把循环节放在一对圆括号中.例如, 1/3 = .33333333 写成0.(3) 41/333 = 0.123123123... 写成0.(123) 用xxx.0 成表示整数 典型的转化例子: 1/3 = 0.(3) 22/5…

题意:给你N/D的分数,让你输出等价的小数,如果是循环小数,用括号把循环节包起来.如果是整数,后面保留一位小数.每行最多输出76个字符. 题解:模拟除法,如果余数是第二次出现,则代表第一次出现的位置到此为循环节,注意输出,注意输出格式,注意输出每行最多76个字符.学习了一下题解的写法,先写入字符串ans,最后76个一行输出的就很好写了. /* TASK: fracdec LANG:C++ */ #include<cstdio> #include<algorithm> #includ…

乍看题目感觉有难度,实际分析后其实是道简单题 /* ID: yingzho1 LANG: C++ TASK: fracdec */ #include <iostream> #include <fstream> #include <string> #include <map> #include <vector> #include <set> #include <algorithm> #include <stdio.h&…

What Is Mathematics? The National Council of Teachers of Mathematics (NCTM), the world's largest organization devoted to improving mathematics education, is developing a set of mathematics concepts, or standards, that are important for teaching and l…

传送门 Description Vladik and Chloe decided to determine who of them is better at math. Vladik claimed that for any positive integer n he can represent fraction   as a sum of three distinct positive fractions in form . Help Vladik with that, i.e for a g…

D. On Sum of Fractions Let's assume that v(n) is the largest prime number, that does not exceed n; u(n) is the smallest prime number strictly greater than n. Find . Input The first line contains integer t (1 ≤ t ≤ 500) — the number of testscases. Eac…

Fun With Fractions Time Limit: 1000ms, Special Time Limit:2500ms, Memory Limit:65536KB Total submit users: 152, Accepted users: 32 Problem 12878 : No special judgement Problem description A rational number can be represented as the ratio of two integ…

Octal Fractions Time Limit: 1 Sec  Memory Limit: 64 MBSubmit: 149  Solved: 98 Description Fractions in octal (base 8) notation can be expressed exactly in decimal notation. For example, 0.75 in octal is 0.963125 (7/8 + 5/64) in decimal. All octal num…

Octal Fractions Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 6669   Accepted: 3641 Description Fractions in octal (base 8) notation can be expressed exactly in decimal notation. For example, 0.75 in octal is 0.953125 (7/8 + 5/64) in d…

C. Vladik and fractions 题目链接 http://codeforces.com/contest/743/problem/C 题面 Vladik and Chloe decided to determine who of them is better at math. Vladik claimed that for any positive integer n he can represent fraction as a sum of three distinct posit…

题目传送门 /* x>=y, 1/x <= 1/y, 因此1/k - 1/y <= 1/y, 即y <= 2*k */ #include <cstdio> #include <iostream> #include <algorithm> #include <cmath> #include <cstring> #include <string> #include <map> #include <…

P1458 顺序的分数 Ordered Fractions 151通过 203提交 题目提供者该用户不存在 标签USACO 难度普及- 提交  讨论  题解 最新讨论 暂时没有讨论 题目描述 输入一个自然数N,对于一个最简分数a/b(分子和分母互质的分数),满足1<=b<=N,0<=a/b<=1,请找出所有满足条件的分数. 这有一个例子,当N=5时,所有解为: 0/1 1/5 1/4 1/3 2/5 1/2 3/5 2/3 3/4 4/5 1/1 给定一个自然数N,1<=n&…

10976 Fractions Again It is easy to see that for every fraction in the form 1 k (k > 0), we can always find two positive integers x and y, x ≥ y, such that: 1 k = 1 x + 1 y Now our question is: can you write a program that counts how many such pairs…

Consider the fraction, n/d, where n and d are positive integers. If nd and HCF(n,d)=1, it is called a reduced proper fraction. If we list the set of reduced proper fractions for d  8 in ascending order of size, we get: 1/8, 1/7, 1/6, 1/5, 1/4, 2/7, 1…

Consider the fraction, n/d, where n and d are positive integers. If nd and HCF(n,d)=1, it is called a reduced proper fraction. If we list the set of reduced proper fractions for d  8 in ascending order of size, we get: 1/8, 1/7, 1/6, 1/5, 1/4, 2/7, 1…

题目链接:http://acm.swust.edu.cn/problem/801/ Time limit(ms): 1000 Memory limit(kb): 10000   Description Consider the set of all reduced fractions between 0 and 1 inclusive with denominators less than or equal to N. Here is the set when N = 5: 0/1 1/5 1/…

The fraction 49/98 is a curious fraction, as an inexperienced mathematician in attempting to simplify it may incorrectly believe that49/98 = 4/8, which is correct, is obtained by cancelling the 9s. We shall consider fractions like, 30/50 = 3/5, to be…

题目链接:Codeforces 396B On Sum of Fractions 题解来自:http://blog.csdn.net/keshuai19940722/article/details/20076297 题目大意:给出一个n,ans = ∑(2≤i≤n)1/(v(i)*u(i)), v(i)为不大于i的最大素数,u(i)为大于i的最小素数, 求ans,输出以分式形式. 解题思路:一開始看到这道题1e9,暴力是不可能了,没什么思路,后来在纸上列了几项,突然想到高中时候求等差数列时候用到…

首先看一下题目 Consider the set of all reduced fractions between 0 and 1 inclusive with denominators less than or equal to N. Here is the set when N = 5: 0/1 1/5 1/4 1/3 2/5 1/2 3/5 2/3 3/4 4/5 1/1 Write a program that, given an integer N between 1 and 160…

数学世界中,浮点数还可以用分数形式展示,不可约简的分数形式往往更简洁直观.  问题来了,Python中如何输出不可约简的分数形式呢?  答案:用Fraction类来实现.这个类属于标准库的fractions模块.按照国际惯例,用之前需要先导入模块:from fractions import Fraction    下面重点介绍fractions的核心:Fraction类.     1,该类的构造方法:class fractions.Fraction(numerator = 0,denominat…

The / repeats indefinitely with no intervening digits. In fact, the decimal expansion of every rational number (fraction) has a repeating cycle as opposed to decimal expansions of irrational numbers, which have no such repeating cycles. Examples of d…

Problem UVA12558-Efyptian Fractions(HARD version) Accept:187  Submit:3183 Time Limit: 3000 mSec  Problem Description Given a fraction a/b, write it as a sum of different Egyptian fraction. For example, 2/3 = 1/2 + 1/6. Thereisonerestrictionthough: th…

A continued fraction of height n is a fraction of form . You are given two rational numbers, one is represented as  and the other one is represented as a finite fraction of height n. Check if they are equal. Input The first line contains two space-se…

decimal 1.作用: 用于浮点数计算.相比内置的二进制浮点数实现 float这个类型有助于 金融应用和其它需要精确十进制表达的场合,控制精度,控制舍入以适应法律或者规定要求,确保十进制数位精度,或者用户希望计算结果与手算相符的场合.Decimal 重现了手工的数学运算,这就确保了二进制浮点数无法精确保有的数据精度. 高精度使 Decimal 可以执行二进制浮点数无法进行的模运算和等值测试 2.函数: 其实decimal模块最常用的函数就是Decimal()和getcontext(),其他基…

Repeating Decimals 紫书第3章,这哪是模拟啊,这是数论题啊 [题目链接]Repeating Decimals [题目类型]抽屉原理 &题解: n除以m的余数只能是0~m-1,根据抽屉原则,当计算m+1次时至少存在一个余数相同,即为循环节:存储余数和除数,输出即可. 上面是我查到的,现在让我解释一下: 比如5/43,先是要模拟除法运算,第一步50/43 余7;第二步,70/43 于27... 这样一直取余下去,肯定不会超过43次,就会有余数相同的情况,有相同情况就是找到循环节了.…

转载自:http://blog.csdn.net/daydreamingboy/article/details/6310907 分析MySQL数据类型的长度 MySQL有几种数据类型可以限制类型的"长度",有CHAR(Length).VARCHAR(Length).TINYINT(Length).SMALLINT(Length).MEDIUMINT(Length).INT(Length).BIGINT(Length).FLOAT(Length, Decimals).DOUBLE(Len…

UVA12558 Egyptian Fractions (HARD version) 题解 迭代加深搜索,适用于无上界的搜索.每次在一个限定范围中搜索,如果无解再进一步扩大查找范围. 本题中没有分数个数和分母的上限,只用爆搜绝对TLE.故只能用迭代加深搜索. #include<cstdio> #include<cstring> #include<set> using namespace std; typedef long long ll; int num,T,t,k;…