这个BFS并不是很好想.. 最主要的一点是每个余数只会被拿出来一次更新其他余数, 然后我用d[ i ]表示 到达 i 这个余数最短需要多长,然后从高位往低位贪心,判断成立的时候忘记了如果0被ban掉了这个判断会 出问题,都想到这里了为什么没有想到直接去bfs找答案呢??? 我TM蠢爆. #include<bits/stdc++.h> #define LL long long #define fi first #define se second #define mk make_pair #def…
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…
//因为n是小于等于10000可以利用这点进行搜索对n取余则余数为零时就为所找的.因为他的余数肯定小于10000所以不会无休止下去 #include<stdio.h> #include<string.h> #include<queue> #include<iostream> #include<algorithm> #define N 1111111 using namespace std; int pre[N],now[N],a[20]; voi…
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…
K - Yet Another Multiple Problem Time Limit:20000MS Memory Limit:65536KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4474 Appoint description: System Crawler (2014-10-16) Description There are tons of problems about integer mul…
Saving HDU Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 7194 Accepted Submission(s): 3345 Problem Description 话说上回讲到海东集团面临内外交困,公司的元老也只剩下XHD夫妇二人了.显然,作为多年拼搏的商人,XHD不会坐以待毙的. 一天,当他正在苦思冥想解困良策的…
http://acm.hdu.edu.cn/showproblem.php?pid=3037 Lucas定理模板. 现在才写,noip滚粗前兆QAQ #include<cstdio> #include<cstring> #include<algorithm> using namespace std; typedef long long ll; int jc[100003]; int p; int ipow(int x, int b) { ll t = 1, w = x;…
Special equations Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4569 Description Let f(x) = a nx n +...+ a 1x +a 0, in which a i (0 <= i <= n) are all known integers. We call f(x) 0 (mod…
The kth great number Time Limit:1000MS Memory Limit:65768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4006 Description Xiao Ming and Xiao Bao are playing a simple Numbers game. In a round Xiao Ming can choose to write down a nu…
How many integers can you find Time Limit:5000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1796 Description Now you get a number N, and a M-integers set, you should find out how many integers which are sm…
hdu5901题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5901 code vs 3223题目链接:http://codevs.cn/problem/3223/ 思路:主要是用了一个Meisell-Lehmer算法模板,复杂度O(n^(2/3)).讲道理,我不是很懂(瞎说什么大实话....),下面输出请自己改 #include<bits/stdc++.h> using namespace std; typedef long long LL;…