http://poj.org/problem?id=1475 http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=249 Pushing Boxes Time Limit: 2000MS   Memory Limit: 131072K Total Submissions: 4662   Accepted: 1608   Special Judge Description Imagine you are standing insid…

题目大意 人推箱子从起点到终点,要求推箱子的次数最少,并打印出来人移动的路径. 题目分析 对于箱子进行宽搜的同时,要兼顾人是否能够把箱子推到相应的位置 每一次对箱子bfs 然后对人再bfs #include<cstdio>#include<cstring>#include<queue>#include<cmath>#include<iostream>#include<algorithm>#include<string>us…

[poj P1475] Pushing Boxes Time Limit: 2000MS   Memory Limit: 131072K   Special Judge Description Imagine you are standing inside a two-dimensional maze composed of square cells which may or may not be filled with rock. You can move north, south, east…

Pushing Boxes Time Limit: 2000ms Memory Limit: 131072KB This problem will be judged on PKU. Original ID: 147564-bit integer IO format: %lld      Java class name: Main Special Judge   Imagine you are standing inside a two-dimensional maze composed of…

题目传送门 首先说明我这个代码和lyd的有点不同:可能更加复杂 既然要求以箱子步数为第一关键字,人的步数为第二关键字,那么我们可以想先找到箱子的最短路径.但单单找到箱子的最短路肯定不行啊,因为有时候不能被推动,怎样确定一条既满足最短又满足可行的箱子路径呢,其实这就是一种有限制的BFS. 对于箱子: 设现在的位置为x,y,扩展方向为dx,dy,将要到达的下一个位置为x+dx,y+dy check它是否可行: 1.不越界. 2.之前没有走过. 3.不能走到“#”上. 4.人能够从当前站立的位置到达(…

题目链接 题意 : 问一个m×n的矩形中,有多少个pocket,如果两块油田相连(上下左右或者对角连着也算),就算一个pocket . 思路 : 写好8个方向搜就可以了,每次找的时候可以先把那个点直接变为*,这样可以避免重复搜索. //POJ 1562 ZOJ 1709 #include <stdio.h> #include <string.h> #include <iostream> #include <stack> #include <algori…

Pushing Boxes Description Imagine you are standing inside a two-dimensional maze composed of square cells which may or may not be filled with rock. You can move north, south, east or west one cell at a step. These moves are called walks. One of the e…

POJ1475 Pushing Boxes  推箱子,#表示墙,B表示箱子的起点,T表示箱子的目标位置,S表示人的起点 本题没有 Special Judge,多解时,先最小化箱子被推动的次数,再最小化人移动的步数.若仍有多条路线,则按照N.S.W.E的顺序优先选择箱子的移动方向(即先上下推,再左右推).在此前提下,再按照n.s.w.e的顺序优先选择人的移动方向(即先上下动,再左右动). 每个阶段的状态包括人的位置,箱子的位置,由于每次在移动箱子之后,认得位置一定位于箱子之前的位置,所以可以将每次…

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…

水题三题: 1.给你B和N,求个整数A使得A^n最接近B 2. 输出第N个能被3或者5整除的数 3.给你整数n和k,让你求组合数c(n,k) 1.poj 3100 (zoj 2818) Root of the Problem: http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=2818 http://poj.org/problem?id=3100 #include<cstdio> #include<cmath>…