没什么巧办法,直接搜就行. 用余数作为每个节点的哈希值. #include <cstdio> #include <cstring> #include <cstdlib> ; struct node { int mod; int fa; int digit; node() {} node( int mod, int fa, int dig ):mod(mod), fa(fa), digit(dig) { } }; int N; ]; bool vis[MAXN]; nod…

题意:求m的倍数中不包含一些数码的最小倍数数码是多少.比如15 ,不包含0  1 3,答案是45. BFS过程:用b[]记录可用的数码.设一棵树,树根为-1.树根的孩子是所有可用的数码,孩子的孩子也是所有可用的数码.这样从根到叶子节点这条路径所组成的数表示一个可行的数. __                 __ 剪枝:(A % m ==  B % m)  =>  (AX % m ==  BX % m)   即如果搜索到一个数X, X%m == a (a !=0) , 则以后如果搜索到Y , Y…

Yet Another Multiple Problem Time Limit: 40000/20000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 3407    Accepted Submission(s): 825 Problem Description There are tons of problems about integer multiples. Despit…

题意: 找到一个n的倍数,这个数不能含有m个后续数字中的任何一个 题解: #include<stdio.h> #include<string.h> #include<queue> using namespace std; queue<int>que; ]; ],pre[],value[]; int n,m; void print(int n) { ) { print(pre[n]); printf("%d",value[n]); } }…

Yet Another Multiple Problem Time Limit : 40000/20000ms (Java/Other)   Memory Limit : 65536/65536K (Java/Other) Total Submission(s) : 2   Accepted Submission(s) : 1 Problem Description There are tons of problems about integer multiples. Despite the f…

Description Given a positive integer n, write a program to find out a nonzero multiple m of n whose decimal representation contains only the digits 0 and 1. You may assume that n is not greater than 200 and there is a corresponding m containing no mo…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4474 (a*10+b)%c = ((a%c)*10+b%c)%c; 然后从高位开始枚举能填的数字填充,只是注意最高位(第一位)不能为0. 代码: #include<cstdio> #include<iostream> #include<algorithm> #include<cstring> #include<string> #include<…

Alien's Necklace Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1526    Accepted Submission(s): 415 Problem Description JYY is taking a trip to Mars. To get accepted by the Martians, he decid…

题意:给一些n,求出最小的只包含0,1的n的倍数 设两数a, b满足: a < b 并且a % n = b % n. 如果 ( a * 10^x + c ) % n = z , 根据同余定理,( b * 10^x + c ) % n 也等于 z. b的情况其实与a相同,如果a不符合条件,那么b一定不符合条件. 因此我们在搜索时,从1开始,每次往后添加0或1,如果得到的数与之前得到的某数同余,则扔掉,否则放入队列继续搜索. #include <cstdio> #include <cs…

Problem Description There are tons of problems about integer multiples. Despite the fact that the topic is not original, the content is highly challenging. That’s why we call it “Yet Another Multiple Problem”.In this problem, you’re asked to solve th…