Problem Description Yi Sima was one of the best counselors of Cao Cao. He likes to play a funny game himself. It looks like the modern Sudoku, but smaller. Actually, Yi Sima was playing it different. First of all, he tried to generate a × board with…

Description Yi Sima was one of the best counselors of Cao Cao. He likes to play a funny game himself. It looks like the modern Sudoku, but smaller. Actually, Yi Sima was playing it different. First of all, he tried to generate a 4×4 board with every…

题目网址:http://acm.hdu.edu.cn/showproblem.php?pid=5547 题目: Sudoku Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 2372    Accepted Submission(s): 804 Problem Description   Yi Sima was one of the be…

传送门: http://acm.hdu.edu.cn/showproblem.php?pid=1426 Sudoku Killer Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 9804    Accepted Submission(s): 2944 Problem Description 自从2006年3月10日至11日的首届数独世界…

题意:数独. 析:由于只是4*4,完全可以暴力,要注意一下一些条件,比如2*2的小方格也得是1234 代码如下: #pragma comment(linker, "/STACK:1024000000,1024000000") #include <cstdio> #include <string> #include <cstdlib> #include <cmath> #include <iostream> #include &…

这道题,又是一位玄学搜索...... 我是用的蜗牛序搜的(顾名思义,@,这么搜),我正着搜80然后一反转比原来快了几十倍........一下AC....... 我的思路是这样的话我们可以从内到外或者从外到内搜索,这样的话我们就可以在一定程度上运用贪心,因为中间的价值大外面的价值小,我是作为一个从来没有玩过数独的人的思路...然而任何一个玩过数独的人都会先选可能状态少的优先搜索....... 对于这题里的数据,可行方案很少因此摆在我们面前的不是减去不优的解而是减去不成立的解,然而对于不成立的解在我…

#include<stdio.h> #include<string.h> int visit[10][10]; char map[10][10]; int n,ans,ss,t; int judge(int x,int y) { int k; if(x<0||x>=n||y<0||y>=n) return 0; if(visit[x][y]==1||map[x][y]=='X') return 0; for(k=x-1;k>=0;k--) { if(m…

题目 //传说中的记忆化搜索,好吧,就是用深搜//多做题吧,,这个解法是搜来的,蛮好理解的 //题目大意:给出两堆牌,只能从最上和最下取,然后两个人轮流取,都按照自己最优的策略,//问说第一个人对多的分值.//解题思路:记忆化搜索,状态出来就非常水,dp[fl][fr][sl][sr][flag],//表示第一堆牌上边取到fl,下面取到fr,同样sl,sr为第二堆牌,flag为第几个人在取.//如果是第一个人,dp既要尽量大,如果是第二个人,那么肯定尽量小. http://www.2cto.co…

THE MATRIX PROBLEM Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5437    Accepted Submission(s): 1372 Problem Description You have been given a matrix CN*M, each element E of CN*M is positive…

Sudoku Killer Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 3674    Accepted Submission(s): 1160 Problem Description 自从2006年3月10日至11日的首届数独世界锦标赛以后,数独这项游戏越来越受到人们的喜爱和重视.据说,在2008北京奥运会上,会将数独列为一个单独的…