SERGRID - Grid no tags  You are on an nxm grid where each square on the grid has a digit on it. From a given square that has digit k on it, a Move consists of jumping exactly k squares in one of the four cardinal directions. A move cannot go beyond t…

思路: 在一个方向上走K步,基础BFS. 注意标记: 注意路径: PS:显著注释是记录路径. #include<bits/stdc++.h> using namespace std; const int N=5e2+10; char ma[N][N]; bool vis[N][N]; int dx[4]={0,0,-1,1}; int dy[4]={1,-1,0,0}; /***************/ //int prex[N][N]; //int prey[N][N]; /*******…

The wizards and witches of Hogwarts School of Witchcraft found Prof. Binn's History of Magic lesson to be no less boring than you found your own history classes.  Recently Binns has been droning on about Goblin wars, and which goblin civilization fou…

题目:VJ 思路: BFS+回溯,但是要剪枝,看了dalao的题解,超时+WA无数发,终于过了 #include<cstdio> #include<cstring> #include<cstdlib> #include<cctype> #include<queue> #include<cmath> //#include<map> #include<string> #include<iostream>…

SERGRID - Grid 一个水广搜我竟然纠结了这么久,三天不练手生啊,况且我快三个月没练过搜索了... 题意:n*m的方格,每个格子有一个数,意味着在此方格上你可以上下左右移动s[x][y]个格子,不能出界.求左上角那个格子到右下角那个格子最少需要走几步. 思路:就是一个队列广搜,开始做一时想不起要用队列,结果用dfs左改右改,还不容易调出来了结果TLE了,我知道清楚标记的话复杂度最高500^4,不T才怪.后来叫队友看了看队友说这不就是水广搜嘛,然后水之.他说的倒是提醒了我,用广搜标记,怎…

之前听朋友说LeetCode出了一道新题,但是一直在TLE,我就找时间做了一下.这题是一个比较典型的BFS的题目,自己匆忙写了一个答案,没有考虑优化的问题,应该是有更好的解法的. 原题如下: You want to build a house on an empty land which reaches all buildings in the shortest amount of distance. You can only move up, down, left and right. You…

题目链接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3781 Leo has a grid with N rows and M columns. All cells are painted with either black or white initially. Two cells A and B are called connected if they share an edge and they are in…

链接:http://www.bnuoj.com/bnuoj/problem_show.php?pid=25585 Current Server Time: 2013-08-27 20:42:26 Robots on a grid Time Limit: 3000ms Memory Limit: 65536KB   64-bit integer IO format: %lld      Java class name: Main Prev Submit Status Statistics Disc…

Leo has a grid with N rows and M columns. All cells are painted with either black or white initially. Two cells A and B are called connected if they share an edge and they are in the same color, or there exists a cell C connected to both A and B. Leo…

IITWPC4F - Gopu and the Grid Problem no tags  Gopu is interested in the integer co-ordinates of the X-Y plane (0<=x,y<=100000). Each integer coordinate contain a lamp, initially all the lamps are in off mode. Flipping a lamp means switching it on if…