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GNY07H - Tiling a Grid With Dominoes |
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.
Input
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.
Output
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.
Example
Input: 3 2 3 7 Output: 1 5 2 11 3 781
Added by: | Marco Gallotta |
Date: | 2008-03-12 |
Time limit: | 9.600s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ERL JS-RHINO NODEJS PERL6 VB.NET |
Resource: | ACM Greater New York Regionals 2007 |
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2024-11-10 08:15:22
Ex for 3 its can be 4x2 (4 times) * 4x1 (1 times) = 4 4x1 (1 times) * 4x2 (4 times) = 4 4x1 (1 times) * 4x1 (1 times) * 4x1 (1 times) = 1 4x3 (2 times) = 2 (special like F + roataed F type) 4+4+1+2 = 11 |
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2023-04-16 05:03:20
Can be solved with plug dp |
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2021-05-28 20:16:32
Can be solved using dp with bitmask...see William Fiset's YouTube channels for "Tilling Problem" explanation :) |
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2020-12-28 09:59:59
https://www.spoj.com/problems/M3TILE/ try this after solving this...it will be much easier |
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2020-10-01 21:10:50
Why is it tagged #bitmasks? Can somebody point how to solve with bitmasks? Hint: DP table size of 120 is more than enough. |
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2020-03-30 08:27:09
for w=0 ans = 1 |
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2019-10-04 15:23:36
Two ACs in two goes :/ |
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2018-11-23 17:31:55
The values of W will be chosen so the count will fit in a 32-bit integer. About 4 billion will fit in a 32-bit unsigned integer. 2 billion for signed. @ushould_study Last edit: 2018-11-23 17:32:26 |
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2018-09-13 15:07:12
how to define the size of w ? Is there any upper limit to it? I had kept it 100 then SIGSEGV occurred. Changed it to 1000 got AC. How to find the upper limit of w? Anyone ? |
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2018-08-17 15:51:36
http://journeywithdp.blogspot.com/2018/07/way-to-solve-tiling-problems.html this link really helped me in understanding how to form recurrence .... thanks to @cenation092 Last edit: 2018-08-17 15:52:15 |