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Tiling With 2 * 1 Tiles

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1. You are given a number n representing the length of a floor space which is 2m wide. It's a 2 * n board.
2. You've an infinite supply of 2 * 1 tiles.
3. You are required to calculate and print the number of ways floor can be tiled using tiles.
Input Format 
A number n
Output Format 
A number representing the number of ways in which the number of ways floor can be tiled using tiles.
Question Video
Constraints 
1 <= n <= 100
Sample Input 
8
Sample Output 
34


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