Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 14368   Accepted: 7102   Special Judge Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure. In so…

Sudoku Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure. In some of the cells are written decimal digits from 1 to 9. The other cells are empty. The goal is to fill the…

POJ 2676 Sudoku Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 17627   Accepted: 8538   Special Judge Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the…

SudoKu Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%lld & %llu POJ 2676 Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure. In some of the c…

题目链接:http://poj.org/problem?id=2676 Time Limit: 2000MS Memory Limit: 65536K Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure. In some of the cells are writte…

Sudoku Problem's Link:   http://poj.org/problem?id=2676 Mean: 略 analyse: 记录所有空位置,判断当前空位置是否可以填某个数,然后直接DFS,注意从后往前搜索,时间比正向搜快很多.16ms水过 Time complexity: O(n) Source code:  // Memory Time // 1347K 0MS // by : crazyacking // 2015-04-10-14.30 #include<map>…

Sudoku Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 12005   Accepted: 5984   Special Judge Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure.…

dfs 用的还是不行啊,做题还是得看别人的博客!!! 题目:http://poj.org/problem?id=2676 题意:把一个9行9列的网格,再细分为9个3*3的子网格,要求每行.每列.每个子网格内都只能使用一次1~9中的一个数字,即每行.每列.每个子网格内都不允许出现相同的数字. 0是待填位置,其他均为已填入的数字. 要求填完九宫格并输出(如果有多种结果,则只需输出其中一种) 如果给定的九宫格无法按要求填出来,则输出原来所输入的未填的九宫格 参考博客:http://www.cnblog…

Sudoku Time Limit : 4000/2000ms (Java/Other)   Memory Limit : 131072/65536K (Java/Other) Total Submission(s) : 15   Accepted Submission(s) : 12 Special Judge Problem Description Sudoku is a very simple task. A square table with 9 rows and 9 columns i…

Sudoku Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 11694   Accepted: 5812   Special Judge Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure.…

题目传送门 题意:数独问题,每行每列以及每块都有1~9的数字 分析:一个一个遍历会很慢.先将0的位子用vector存起来,然后用rflag[i][num] = 1 / 0表示在第i行数字num是否出现过,其他的类似,这样在用DFS就很快了,数据问题,反着搜索会更快... /************************************************ * Author :Running_Time * Created Time :2015/11/10 星期二 15:43:47 *…

思路:记录每行每列每一个宫已经出现的数字就可以.数据比較弱 另外POJ 3074 3076 必须用剪枝策略.但实现较麻烦,还是以后学了DLX再来做吧 //Accepted 160K 0MS #include<cstdio> #include<iostream> #include<algorithm> #include<cstring> using namespace std; const int N =15; char sudo[N][N]; bool vi…

POJ - 2676 : http://poj.org/problem?id=2676: 解题思想 (大力出奇迹): 1. 依次在空格里面填上“1~9”,并检查这个数字是否合法(其所在的行.列,以及3X3的子区域里不存在重复的数字).如果合法,则前进到下一个格子. 2. 如果在某个格子里,从“1”到“9”都不合法,这说明前面某个格子填错了.这时就回退到上一格,继续试.例如,如果上一格已填的数字是3,就继续试4,5,6,… 是否合法.如果找到一个合法的数字,则又前进到下一格.如果找不到,说明前面还…

-->Sudoku 直接中文 Descriptions: Sudoku对数独非常感兴趣,今天他在书上看到了几道数独题: 给定一个由3*3的方块分割而成的9*9的表格(如图),其中一些表格填有1-9的数字,其余的则为空白(数字0为空白).请在空白表格中填入数字1-9使得9*9表格的每行.每列.每个3*3块内无重复数字.  Input 第一行输入一个整数T,表示样例数量.对于每个样例, 一共9行, 表示数独表格的每一行.接下来每一行输入一个字符串表示数独表格的每一行的9个数字.数独表格中空白用数字0…

Sudoku Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 15830   Accepted: 7737   Special Judge Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure.…

题目链接:Sudoku Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 18105   Accepted: 8772   Special Judge Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Fig…

Sudoku Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 25356   Accepted: 11849   Special Judge Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure.…

Sudoku Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 21612   Accepted: 10274   Special Judge Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure.…

[题目链接] http://poj.org/problem?id=2676 [算法] 深度优先搜索 [代码] #include <algorithm> #include <bitset> #include <cctype> #include <cerrno> #include <clocale> #include <cmath> #include <complex> #include <cstdio> #inc…

数独 #include "cstdio" #include "cstring" #include "cstdlib" #include "iostream" using namespace std; #include <cstdio> ][],map[][];///v存储需要填的位置 bool finished; bool judge(int x,int y,int k) { int i,j,it,jt; ; i&…

题意:完成数独程序,数独要求每行每列且每个3*3矩阵都必须是1~9的数字组成. 思路:dfs 用row[i][n] 记录第i行n存在  用col[j][n] 记录第j列n存在 grid[k][n] 记录第k个3*3中的n存在 遍历的时候,先把列遍历完然后在遍历行 if (map[r][c]) { ) flag = dfs(r + , ); ); return flag; } 现在推 第一个矩阵为  0,0 0,1 0,2              第二个矩阵为   0,3 0,4 0,5 1,0…

http://poj.org/problem?id=2676 深搜的题目. 题意呢就是一个数独的游戏,应该都知道规则. 思路:我的思路很简单,就是用数组来判断某个数字是否可以使用,而每一个数字都由三个条件来限制它,分别是行和列,和其所在的9宫格里面,是不能有重复的. 如果有重复的,则不能使用,甚至都不能尝试. 代码写的也比较渣.还有这个题的数据应该不深,从0,0搜和从8,8开始搜,时间差距非常大,我的从0,0开始是1200Ms,从8,8是16Ms. 这是数据的问题. #include <stdi…

Sudoku Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 3074 Appoint description:  System Crawler  (2015-04-18) Description In the game of Sudoku, you are given a large 9 × 9 grid divided into sm…

Description A Sudoku grid is a 16x16 grid of cells grouped in sixteen 4x4 squares, where some cells are filled with letters from A to P (the first 16 capital letters of the English alphabet), as shown in figure 1a. The game is to fill all the empty g…

#include<iostream> using namespace std; bool heng(int **sudo, int a, int b, int value) { bool flag = true; for(int i=0; i<9; i++) { if(sudo[a][i]==value) { flag = false; } } return flag; } bool shu(int **sudo, int a, int b, int value) { bool flag…

传送门:http://poj.org/problem?id=3074 DLX 数独的9*9的模板题. 具体建模详见下面这篇论文.其中9*9的数独怎么转化到精确覆盖问题,以及相关矩阵行列的定义都在下文中,描述的十分清晰 http://wenku.baidu.com/view/4ab7bd00a6c30c2259019eae.html 有关Dancing Links的英文论文详见下面链接 http://wenku.baidu.com/view/60eb28ded15abe23482f4d77.htm…

Sudoku Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 8152   Accepted: 2862 Description In the game of Sudoku, you are given a large 9 × 9 grid divided into smaller 3 × 3 subgrids. For example, . 2 7 3 8 . . 1 . . 1 . . . 6 7 3 5 . . .…

Description In the game of Sudoku, you are given a large 9 × 9 grid divided into smaller 3 × 3 subgrids. For example, . 2 7 3 8 . . 1 . . 1 . . . 6 7 3 5 . . . . . . . 2 9 3 . 5 6 9 2 . 8 . . . . . . . . . . . 6 . 1 7 4 5 . 3 6 4 . . . . . . . 9 5 1…

三星机试也考了类似的题目,只不过是要针对给出的数独修改其中三个错误数字,总过10个测试用例只过了3个与世界500强无缘了 36. Valid Sudoku Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules. The Sudoku board could be partially filled, where empty cells are filled with the character '.'. A…

Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules. The Sudoku board could be partially filled, where empty cells are filled with the character '.'. A partially filled sudoku which is valid. Note:A valid Sudoku board (partially…