链接:http://acm.hdu.edu.cn/showproblem.php? pid=1143 Tri Tiling Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 2799 Accepted Submission(s): 1585 Problem Description In how many ways can you tile a…

Tri Tiling Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 2118    Accepted Submission(s): 1211 Problem Description In how many ways can you tile a 3xn rectangle with 2x1 dominoes? Here is a sa…

将一个3*n的矩形用1*2的矩形填充,n为奇数时一定不能被填满,n*3%2==1 接下来处理这个问题我们要从简单的情况开始考虑,所谓递归就是要能将问题的规模不断减小,通过小问题的解决最后将复杂问题解决.如果是3*2的情况仅有3种可能 那么我们来考虑3*4的矩形是否一些就是有这两个3*2的矩形拼接在一起的多种组合,当然还包含一种特殊的情况即如下图所示的拼接方法 把 4, 6, 8.... 看成一整块,就有下图两种情况(正着,倒着) 那么我们可以将其排成的各种情况分成如下两大类 由自身单独构成的矩形…

意甲冠军:一些现有的1*2小盒子.求拼3*n多少个长方形的拼写. 思考: 因为它是一个递归式.肯定会遇到层的关系.仔细观察,研究发现,每层应设置2一层.(奇数层不能是矩形)而从显卡好最后一层的最后一战,可以发现.只有两种结果(). 即: watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdTAxNDU2OTU5OA==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Cent…

Tri Tiling Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 2731    Accepted Submission(s): 1547 Problem Description In how many ways can you tile a 3xn rectangle with 2x1 dominoes? Here is a sam…

Tri Tiling Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1631    Accepted Submission(s): 928 Problem DescriptionIn how many ways can you tile a 3xn rectangle with 2x1 dominoes? Here is a sampl…

                                                                                Tri Tiling   Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 10306   Accepted: 5237 Description In how many ways can you tile a 3xn rectangle with 2x1 domino…

题目链接:uva 10918 - Tri Tiling 题目大意:给出n,计算用1*2的瓷砖有多少种方法铺满3*n的地方. 解题思路:和uva 10359 - Tiling有点相似,不过难度会比较大,公式c[i] = 4 * c[i - 2] - c[i - 4]. 推导过程:c[0] = 1, c[2] = 3, c[4] = c[2] * 3 + c[1] * 2, c[6] = c[4] * 3 + (c[0] + c[2]) * 2 .... 即c[i] = c[i - 2] * 3 +…

Tri Tiling Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 7841   Accepted: 4113 Description In how many ways can you tile a 3xn rectangle with 2x1 dominoes? Here is a sample tiling of a 3x12 rectangle.  Input Input consists of several t…

  Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status #include<cstdio> using namespace std; int f(int n) { ) ; ) ; else *f(n-)-f(n-); } int main() { int n; &&n!=-) ==) printf("%d\n",f(n));…