题意:给一块n×m的空地,用1×2的砖铺,有多少种方案. 解法:状压dp.考虑dp[i][j]表示前i - 1行都铺满时第i行的状态为j时的方案数.对于第i行,每个格子上是否有砖用0和1表示,0表示不铺砖,1表示铺砖,二进制压缩状态,枚举第i - 1行的状态j和第i行的状态k,看这两种状态是否符合实际,如果符合实际,dp[i][k] += dp[i - 1][j].因为在看第i行时要求i - 1行都铺满,所以j状态中0的位置k都必须是1,表示放一块2×1的砖,剩下的部分如果k的位置是1,则是放了…

[poj P2411] Mondriaan's Dream Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 18023   Accepted: 10327 Description Squares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his '…

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…

Mondriaan's Dream 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…

Mondriaan's Dream Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 18903 Accepted: 10779 Description Squares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series' (…

Mondriaan's Dream Time Limit: 3000MS Memory Limit: 65536K Total Submissions: 18903 Accepted: 10779 Description Squares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series' (…

Mondriaan's Dream Time Limit: 3000MS Memory Limit: 65536K 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 d…

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…

Description Squares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings and height in varying ways. Expert as he was in this material, he saw at a glance that he'll need a computer to calculate t…