Problem D Dancing Digits 题目链接:http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=112&page=show_problem&problem=2139 题目意思: 给你{1,2,3,4,5,6,7,8}的一个排列,其中每个数带负号或带正号,通过插入的方法将这些数按绝对值从小到大排序,输出插入的最小步数,如果不可能完成输出-1,能否插入的要求是…

UVA 1341 - Different Digits 题目链接 题意:给定一个正整数n.求一个kn使得kn上用的数字最少.假设同样,则输出值最小的 思路: 首先利用鸽笼原理证明最多须要2个数字去组成 设一个数字k.组成k,kk,kkk,kkkk... %n之后余数必定在0 - (n - 1)之间,所以必定能选出两个余数相等的数字相减为0,这个数字就是由0和k组成的. 因此仅仅要考虑一个数字和两个数字的情况,去bfs.记忆化余数.由于余数反复必定形成周期了 代码: #include <stdio…

先上题目: F. Dancing the Cheeky-Cheeky  Context The Cheeky-Cheeky is a new song. They dance it in Mula, and also in Hong Kong. All the freekies dance it, and the geek all love it. And the Cheeky-Cheeky is danced like this: The breikin-brokin. The meneito…

题目 Volume 0. Getting Started 开始10055 - Hashmat the Brave Warrior 10071 - Back to High School Physics 10300 - Ecological Premium 458 - The Decoder 494 - Kindergarten Counting Game 414 - Machined Surfaces 490 - Rotating Sentences 445 - Marvelous Mazes…

  Product of digits  For a given non-negative integer number N , find the minimal natural Q such that the product of all digits of Q is equal N . Input The first line of input contains one positive integer number, which is the number of data sets. Ea…

这道题很简单.先将N用2,3,5,7(即10以内的素数)分解因数(需要先特殊判断N不为1),然后将可以合并的因数合并(如2*2合并成4,)这样求得的结果位数会减少,大小肯定会小一些.具体实现见代码. 我的解题代码如下: #include <iostream> #include <cstdio> #include <cstring> #include <cmath> #include <cstdlib> #include <string>…

How many zeros and how many digits? Input: standard input Output: standard output Given a decimal integer number you will have to find out how many trailing zeros will be there in its factorial in a given number system and also you will have to find…

Given a decimal integer number you will have to find out how many trailing zeros will be there in itsfactorial in a given number system and also you will have to find how many digits will its factorial havein a given number system? You can assume tha…

n!=x*b^y, 当x为正整数时,最大的y就是n!末尾0的个数了, 把n,b分别拆成素因子相乘的形式: 比如, n=5,b=16 n=5,b=2^4, 非常明显,末尾0的个数为0 10进制时,n!=a*10^x b进制时,n!=c*b^y 非常明显,n!的位数就是最大的x+1 这里计算我用了log,精度设置为1e-9 #include<iostream> #include<cstdio> #include<vector> #include<cstring>…

题意: 给出两个数字a和b,求a的阶乘转换成b进制后,输出 (1)后缀中有多少个连续的0? (2)数a的b进制表示法中有多少位? 思路:逐个问题解决. 设a!=k.  k暂时不用直接转成b进制. (1)阶乘后缀0问题.先看这个十进制后缀0的例子:http://www.cnblogs.com/xcw0754/p/4604473.html 解法差不多,稍变化. 首先将b分解成若干质数(比如8={2*2*2})保存在一个集合A中(注意自然数的质数分解是唯一的),只要有一个序列A就能构成一个0,因为满b…

UVA - 10375 Choose and divide Choose and divide Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 4053   Accepted: 1318 Description The binomial coefficient C(m,n) is defined as m! C(m,n) = -------- n!(m-n)! Given four natural numbers p, q…

Dance Dance Revolution Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Submit Status Practice UVA 1291 Mr. White, a fat man, now is crazy about a game named ``Dance, Dance, Revolution". But his dance skill is so poor that h…

String Compression Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Submit Status Practice UVA 1351 Appoint description:  System Crawler  (2015-08-21) Description   Run Length Encoding(RLE) is a simple form of compression. RLE c…

Cellular Network Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu Submit Status Practice UVA 1456 A cellular network is a radio network made up of a number of cells each served by a base station located in the cell. The base sta…

链接:http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&category=&problem=1006 Problem A Useless Tile Packers Input: standard input Output: standard output Yes, as you have apprehended the Useless Tile Pac…

这道题目甚长, 代码也是甚长, 但是思路却不是太难.然而有好多代码实现的细节, 确是十分的巧妙. 对代码阅读能力, 代码理解能力, 代码实现能力, 代码实现技巧, DFS方法都大有裨益, 敬请有兴趣者耐心细读.(也许由于博主太弱, 才有此等感觉). 题目: UVa 1103 In order to understand early civilizations, archaeologists often study texts written in  ancient languages. One…

题目链接:http://acm.uva.es/local/online_judge/search_uva.html Problem:Find out the center of masses of a convex polygon. Input:A series of convex polygons, defined as a number n () stating the number of points of the polygon, followed by n different pair…

博客第一篇写在11月1号,果然die die die die die alone~ 一道不太难的题,白书里被放到排序这一节,半年前用快排A过一次,但是现在做的时候发现可以用字典树加深搜,于是乐呵呵的开始敲了,后来被卡了两天,一直以为算法错了,最后发现是输出答案时忘了回溯,这问题之前没怎么注意过,也算不小的收获. 字典树A了之后换sort来写,没想到快排效率更高,时间减少了一半,在POJ上A了之后重新在UVA上提交,居然WA了,调试半个小时,发现是变长数组的问题,看来UVA上的编译器对c99的支持…

UVa 10618 Tango Tango Insurrection 题目: Problem A: Tango Tango Insurrection You are attempting to learn to play a simple arcade dancing game. The game has 4 arrows set into a pad: Up, Left, Down, Right. While a song plays, you watch arrows rise on a s…

UVa 1412 Fund Management 题目: UVA - 1412 Fund Management Time Limit: 3000MS   Memory Limit: Unknown   64bit IO Format: %lld & %llu Submit Status Description   Frank is a portfolio manager of a closed-end fund for Advanced Commercial Markets (ACM ). Fu…

参考:http://www.cnblogs.com/xiaobaibuhei/p/3301110.html 算法学到很弱,连这么简单个问题都难到我了.但我偏不信这个邪,终于做出来了.不过,是参照别人的,是 xiaobaibuhei 到博客让我找到到感觉,不过我只看了一遍他到代码,后面都是自己写的,虽然写的很像... Write a program that finds and displays all pairs of 5-digit numbers that between them use…

uva 725  Division(除法) A - 暴力求解 Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu   Description Write a program that finds and displays all pairs of 5-digit numbers that between them use the digits 0 through 9 once each, such that…

CALCULATOR CONUNDRUM Alice got a hold of an old calculator that can display n digits. She was bored enough to come up with the following time waster. She enters a number k then repeatedly squares it until the result overflows. When the result overflo…

UVA - 1103Ancient Messages In order to understand early civilizations, archaeologists often study texts written in ancient languages.One such language, used in Egypt more than 3000 years ago, is based on characters called hieroglyphs.Figure C.1 shows…

uva 10192 Vacation The Problem You are planning to take some rest and to go out on vacation, but you really don't know which cities you should visit. So, you ask your parents for help. Your mother says "My son, you MUST visit Paris, Madrid, Lisboa an…

UVA 11774 - Doom's Day 题目链接 题意:给定一个3^n*3^m的矩阵,要求每次按行优先取出,按列优先放回,问几次能回复原状 思路:没想到怎么推理,找规律答案是(n + m) / gcd(n, m),在topcoder上看到一个证明,例如以下: We can associate at each cell a base 3-number, the log3(R) most significant digits is the index of the row of the cel…

UVA - 10014 Simple calculations Time Limit: 3000MS Memory Limit: Unknown 64bit IO Format: %lld & %llu id=19100" style="color:blue">Submit Status Description  Simple calculations  id=19100" style="color:blue">The Pro…

Problem  UVA - 11090 - Going in Cycle!! Time Limit: 3000 mSec Problem Description You are given a weighted directed graph with n vertices and m edges. Each cycle in the graph has a weight, which equals to sum of its edges. There are so many cycles in…

abastract:利用dancing links 解决精确覆盖问题,例如数独,n皇后问题:以及重复覆盖问题. 要学习dacning links 算法,首先要先了解该算法适用的问题,精确覆盖问题和重复覆盖问题等,下面先了解精确覆盖问题和重复覆盖问题. 精确覆盖问题 何为精确覆盖问题 在一个全集X中若干子集的集合为S,精确覆盖(Exactcover)是指,S的子集S*,满足X中的每一个元素在S*中恰好出现一次. 定义 满足以下条件的集合为一个精确覆盖:  S*中任意两个集合没有交集,即X中的元素在…

Cancer or Scorpio Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=3098 Description Alice and Michael is a young couple who are planning on having their…