Mondriaan's Dream POJ - 2411 可以用状压dp,但是要打一下表.暴力枚举行.这一行的状态.上一行的状态,判断如果上一行的状态能转移到这一行的状态就转移. 状态定义:ans[i][S]表示i行前已经全部填满,i行已经填上的列为集合S.如果有竖着的,全部当做用这一行的去补满上一行缺的. (貌似还是插头dp的入门题) #include<cstdio> #include<cstring> typedef long long LL; LL f[][]; LL h,w…

题意:用1*2的方格填充m*n的方格不能重叠,问有多少种填充方法 分析:dp[i][j]表示i行状态为j时的方案数,对于j,0表示该列竖放(影响下一行的该列),1表示横放成功(影响下一列)或上一列竖放成功.状态转移时,枚举每一行可能的状态上一行取反得下一行能放的状态. #include <map> #include <set> #include <list> #include <cmath> #include <queue> #include &…

题目大意:有一些1*2的矩形,现在用这些小矩形覆盖M*N的大矩形,不能重复覆盖,并且要覆盖完全,求有多少种覆盖方式. 分析:可以使用1和0两种状态来表示这个位置有没有放置,1表示放置,0表示没有放置,可以有三种放置方式. 一,竖着放. 二,不放.三,横着放.直接DFS这些情况就行了................还是递归容易理解. 代码如下: =============================================================================…

题目:id=2411" target="_blank">poj 2411 Mondriaan's Dream 题意:给出一个n*m的矩阵,让你用1*2的矩阵铺满,然后问你最多由多少种不同的方案. 分析:这是一个比較经典的题目.网上各种牛B写法一大堆.题解也是 我们能够定义状态:dp[i][st]:在第 i 行状态为 st 的时候的最慷慨案数. 然后转移方程:dp[i][st] = sum (dp[i-1][ss]) 即全部的当前行都是由上一行合法的状态转移而来. 而状态…

题目:Mondriaan's Dream 链接:http://poj.org/problem?id=2411 题意:用 1*2 的瓷砖去填 n*m 的地板,问有多少种填法. 思路: 很久很久以前便做过的一道题目,状压DP,当时写得估计挺艰辛的,今天搜插头DP又搜到它,就先用状压DP写了下,顺利多了,没一会就出来了,可惜因为long long没有1A. 思路挺简单,一行一行解决,每一列用1 表示对下一行有影响,用0 表示对下一行没有影响,所以一行最多2048 种可能,然后要筛选一下,因为有些本身就…

题目链接: http://poj.org/problem?id=2411 Mondriaan's Dream Time Limit: 3000MSMemory Limit: 65536K 问题描述 Squares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series' (where he had…

一.Description Squares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series' (where he had to use his toilet paper to draw on, for all of his paper was filled with squares and…

Mondriaan's Dream Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 13519   Accepted: 7876 Description Squares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series…

状压DP Mondriaan's Dream Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 9938 Accepted: 5750 Description Squares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series…

Mondriaan's Dream Problem Description Squares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series' (where he had to use his toilet paper to draw on, for all of his paper was…