HDU 1222   Wolf and Rabbit   (最大公约数)解题报告 题目链接:http://acm.hust.edu.cn/vjudge/contest/view.action?cid=88159#problem/G 题目: Description There is a hill with n holes around. The holes are signed from 0 to n-1.        A rabbit must hide in one of the holes…

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. \[ x=(p_1^{i_1})*(p_2^{i_2})*(p_3^{i_3})\dots \] \[ y=(p_1^{j_1})*(p_2^{j_2})*(p_3^{j_3})\dots \] \[ z=(p_1^{k_1})*(p_2^{k_2})*(p_3^{k_3})\dots \] \…

Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Description There is a hill with n holes around. The holes are signed from 0 to n-1. A rabbit must hide in one of the holes. A wolf searches the rabbit in anti…

a/b + c/d Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 14895    Accepted Submission(s): 7761 Problem Description 给你2个分数,求他们的和,并要求和为最简形式.   Input 输入首先包含一个正整数T(T<=1000),表示有T组测试数据,然后是T行数据,每行包含四个…

水题,只是想借此记一下gcd函数的模板 #include<cstdio> int gcd(int m,int n){return n?gcd(n,m%n):m;} int main() { int n,m,t; scanf("%d",&t); while(t--){ scanf("%d%d",&m,&n); ) printf("NO\n"); else printf("YES\n"); }…

题意: 一头狼和一头兔子在一座山中,给你一个数n表示洞的个数,编号从0~n-1.兔子可以随意躲在其中一个洞中,狼每次都从编号为0的洞出发,接下来走到第m个洞中,问兔子能不能活下来,即不被狼吃掉.例如:当n = 8,m = 6时,狼走过的洞途径:0->6->4->0->6......,它没走过的洞还有1,2,3,5,7,所以兔子可以存活下来. 分析: 狼会一直在这n个洞中来回,它的模数就是n:它走过的圈数会增加且只有这一个变量,所以可以想到模线性方程组. mx ≡ k(mod n),…

题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=4497 解题思路:将满足条件的一组x,z,y都除以G,得到x‘,y',z',满足条件gcd(x',y',x') = 1,同时lcm(x',y',x') = G/L. 特判,当G%L != 0 时,无解. 然后素数分解G/L,假设G/L = p1^t1 * p2^t2 *````* pn^tn. 满足上面条件的x,y,z一定为这样的形式. x' = p1^i1 * p2^i2 *```* pn^in.…

Description There is a hill with n holes around. The holes are signed from 0 to n-1. A rabbit must hide in one of the holes. A wolf searches the rabbit in anticlockwise order. The first hole he get into is the one signed with 0. Then he will get into…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=4542 小明系列故事--未知剩余系 Time Limit: 500/200 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others) Total Submission(s): 889    Accepted Submission(s): 207 Problem Description "今有物不知其数,三三数之有二,五五数之有三,七七数之有…

题目描述 Description 输入二个正整数x0,y0(2<=x0<100000,2<=y0<=1000000),求出满足下列条件的P,Q的个数 条件:  1.P,Q是正整数 2.要求P,Q以x0为最大公约数,以y0为最小公倍数. 试求:满足条件的所有可能的两个正整数的个数. 输入描述 Input Description 二个正整数x0,y0 输出描述 Output Description 满足条件的所有可能的两个正整数的个数 样例输入 Sample Input 3 60 样例…