3062Tiling a Grid With Dominoes

3062   Tiling a Grid With Dominoes

题目描述

We wish to tile a grid 4 units high and N units long with rectangles (dominoes) 2 units by one unit (in either orientation).  For example, the figure shows the five different ways that a grid 4 units high and 2 units wide may be tiled.
 
 
 
Write a program that takes as input the width, W, of the grid and outputs the number of different ways to tile a 4-by-W grid.

输入格式:

The first line of input contains a single integer N, (1 ≤ N ≤ 1000) which is the number of datasets that follow.
 
Each dataset contains a single decimal integer, the width, W, of the grid for this problem instance.

输出格式:

For each problem instance, there is one line of output:  The problem instance number as a decimal integer (start counting at one), a single space and the number of tilings of a 4-by-W grid.  The values of W will be chosen so the count will fit in a 32-bit integer.

输入样例 复制
3
2
3
7
输出样例 复制
1 5
2 11
3 781

说明

4
5
通过提交
时空限制1000ms/128mb
题目来源
评测方式在线评测
题目类型
难        度