又见GCD Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 9207 Accepted Submission(s): 3782 Problem Description 有三个正整数a,b,c(0<a,b,c<10^6),其中c不等于b.若a和c的最大公约数为b,现已知a和b,求满足条件的最小的c. Input 第一行输入一个…
又见GCD Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 18480 Accepted Submission(s): 7708 Problem Description 有三个正整数a,b,c(0<a,b,c<10^6),其中c不等于b.若a和c的最大公约数为b,现已知a和b,求满足条件的最小的c. Input 第一行输入一…
又见GCD Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 10031 Accepted Submission(s): 4185 Problem Description 有三个正整数a,b,c(0<a,b,c<10^6),当中c不等于b.若a和c的最大公约数为b,现已知a和b,求满足条件的最小的c. Input 第一行输入一…
Problem Description 有三个正整数a,b,c(0 import java.util.Scanner; public class Main{ public static void main(String[] args) { Scanner sc= new Scanner(System.in); int t =sc.nextInt(); while(t-->0){ int a =sc.nextInt(); int b =sc.nextInt(); int c=0; for(int…
又见GCD Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 9984 Accepted Submission(s): 4157 Problem Description 有三个正整数a,b,c(0<a,b,c<10^6),当中c不等于b.若a和c的最大公约数为b,现已知a和b,求满足条件的最小的c. Input 第一行输入一个…
Different GCD Subarray Query Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 221 Accepted Submission(s): 58 Problem Description This is a simple problem. The teacher gives Bob a list of probl…
这个题真的很水,但我竟然连错,在此警醒自己!!! 写代码改了东边,忘了西边,“认真”这两个字又被我吃了,打脸啪啪啪啪. #include<iostream> using namespace std; int gcd(int a, int b) { int t; while(b) { t = a; a = b; b = t%b; } return a; } int main() { int T; cin>>T; while(T--) { long long a, b; cin>…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5019 Problem Description In mathematics, the greatest common divisor (gcd), also known as the greatest common factor (gcf), highest common factor (hcf), or greatest common measure (gcm), of two or more i…
Sum Of Gcd 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=4676 Description Given you a sequence of number a1, a2, ..., an, which is a permutation of 1...n. You need to answer some queries, each with the following format: Give you two numbers L, R, y…
CA Loves GCD 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5656 Description CA is a fine comrade who loves the party and people; inevitably she loves GCD (greatest common divisor) too. Now, there are N different numbers. Each time, CA will select s…
任意门:http://acm.hdu.edu.cn/showproblem.php?pid=4676 Sum Of Gcd Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 908 Accepted Submission(s): 438 Problem Description Given you a sequence of numb…
题目链接:pid=2054" target="_blank">http://acm.hdu.edu.cn/showproblem.php?pid=2054 Problem Description Give you two numbers A and B, if A is equal to B, you should print "YES", or print "NO". Input each test case contain…
Problem about GCD Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 470 Accepted Submission(s): 77 Problem Description Given integer m. Find multiplication of all 1<=a<=m such gcd(a, m)=1 (cop…
CA Loves GCD 题目链接: http://acm.hust.edu.cn/vjudge/contest/123316#problem/B Description CA is a fine comrade who loves the party and people; inevitably she loves GCD (greatest common divisor) too. Now, there are different numbers. Each time, CA will se…
Problem Description Goffi is doing his math homework and he finds an equality on his text book: gcd(n−a,n)×gcd(n−b,n)=nk. Goffi wants to know the number of (a,b) satisfy the equality, if n and k are given and 1≤a,b≤n. Note: gcd(a,b) means greatest co…
题目的意思就是: n个数,求n个数所有子集的最大公约数之和. 第一种方法: 枚举子集,求每一种子集的gcd之和,n=1000,复杂度O(2^n). 谁去用? 所以只能优化! 题目中有很重要的一句话! We guarantee that all numbers in the test are in the range [1,1000]. 1 1 这句话对解题有什么帮助? 子集的种数有2^n种,但是,无论有多少种子集,它们的最大公约数一定在1-1000之间. 所以,我们只需要统计1-1000的最大公…
