GCD is Funny(hdu 5902)

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GCD is Funny Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 282 Accepted Submission(s): 58 Problem Description Alex has invented a new game for fun. There are n integers at a board and he pe…

GCD and LCM HDU 4497 数论

GCD and LCM HDU 4497 数论题意给你三个数x,y,z的最大公约数G和最小公倍数L,问你三个数字一共有几种可能.注意123和321算两种情况. 解题思路 L代表LCM,G代表GCD. \[ x=(p_1^{i_1})*(p_2^{i_2})*(p_3^{i_3})\dots \] \[ y=(p_1^{j_1})*(p_2^{j_2})*(p_3^{j_3})\dots \] \[ z=(p_1^{k_1})*(p_2^{k_2})*(p_3^{k_3})\dots \] \…

HDU 5902 GCD is Funny 数学

GCD is Funny 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5902 Description Alex has invented a new game for fun. There are n integers at a board and he performs the following moves repeatedly: He chooses three numbers a, b and c written at the boa…

hdu 5902 GCD is Funny

Problem Description Alex has invented a new game for fun. There are n integers at a board and he performs the following moves repeatedly: 1. He chooses three numbers a, b and c written at the board and erases them.2. He chooses two numbers from the t…

数学(GCD,计数原理)HDU 5656 CA Loves GCD

CA Loves GCD Accepts: 135 Submissions: 586 Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others) 问题描述 CA喜欢是一个热爱党和人民的优秀同♂志,所以他也非常喜欢GCD(请在输入法中输入GCD得到CA喜欢GCD的原因). 现在他有N个不同的数,每次他会从中选出若干个(至少一个数),求出所有数的GCD然后放回去. 为了使自己不会无聊,CA会把每…

GCD and LCM HDU - 4497（质因数分解）

Problem Description Given two positive integers G and L, could you tell me how many solutions of (x, y, z) there are, satisfying that gcd(x, y, z) = G and lcm(x, y, z) = L? Note, gcd(x, y, z) means the greatest common divisor of x, y and z, while lcm…

GCD and LCM HDU - 4497

题目链接:https://vjudge.net/problem/HDU-4497 题意:求有多少组(x,y,z)满足gcd(x,y,z)=a,lcm(x,y,z)=b. 思路:对于x,y,z都可以写成x = p1^a1*p2^a2*p3^a3....pn^an;y = p1^b1*p2^b2*p3^b3....pn^bn;z=p1^c1*p2^c2*p3^c3....pn^cn;x,y,z的最大公约数可以写成gcd(x,y,z) = p1^min(a1,b1,c1)*p2^min(a2,b2,c…