Hello Kiki Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4517    Accepted Submission(s): 1746 Problem Description One day I was shopping in the supermarket. There was a cashier counting coins…

用到中国剩余定理,然后用扩展欧几里得算法求解. 这里有两个注意点,1.硬币数量不能为0或者负数 2.每个group数量有可能大于50,样例中就有 #include<stdio.h> #include<math.h> #include<stdlib.h> int M[10],A[10],n; int extEuclid(int p,int q,int &x,int &y)//扩展欧几里得算法 { int d,tmp; if(q==0){x=1;y=0;re…

解一元线性同余方程组(模数不互质) 结合看这俩blog讲得不错 http://46aae4d1e2371e4aa769798941cef698.devproxy.yunshipei.com/qq_27599517/article/details/50887445 上面这个对于理解为什么要用最小公倍数有帮助 http://blog.csdn.net/thearcticocean/article/details/49452859 思路就是不断两两合并,成一元线性同余方程,然后不断用扩欧求解 由于是最…

Preface 对于许多数论问题,都需要涉及到Gcd,求解Gcd,常常使用欧几里得算法,以前也只是背下来,没有真正了解并证明过. 对于许多求解问题,可以列出贝祖方程:ax+by=Gcd(a,b),用Exgcd解之即可到答案,Exgcd即扩展欧几里得算法.他还能求乘法逆元,同余方程通解.没有你想得到的,只有你做不到的. 这里是对于两个算法的学习小记 Content 欧几里得算法 算法介绍 由百度百科得 欧几里德算法又称辗转相除法,用于计算两个正整数a,b的最大公约数. 从整数的除法可知:对任给二整…

Hello Kiki Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5489    Accepted Submission(s): 2164 Problem Description One day I was shopping in the supermarket. There was a cashier counting coins…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=3579 题目解析:求一元线性同余方程组的最小解X,需要注意的是如果X等于0,需要加上方程组通解的整数区间lcm(a1,a2,a3,...an). 别的就没什么注意的了. #include <iostream> #include <stdio.h> #include <string.h> #include <algorithm> #include <math.h&…

Hello Kiki Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1943    Accepted Submission(s): 693 Problem Description One day I was shopping in the supermarket. There was a cashier counting coins s…

kiki's game Time Limit: 1000MS   Memory Limit: 10000KB   64bit IO Format: %I64d & %I64u Submit Status Description Recently kiki has nothing to do. While she is bored, an idea appears in his mind, she just playes the checkerboard game.The size of the…

kiki's game Time Limit: 5000/1000 MS (Java/Others) Memory Limit: 40000/10000 K (Java/Others) Total Submission(s): 8127 Accepted Submission(s): 4833 Problem Description Recently kiki has nothing to do. While she is bored, an idea appears in his mind,…

kiki's game Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 40000/1000 K (Java/Others)Total Submission(s): 5094    Accepted Submission(s): 2985 Problem Description Recently kiki has nothing to do. While she is bored, an idea appears in his mi…