Problems
Domino
Domino
Find the number of ways to cover a rectangle $2 \cdot n$ with domino of size $2 \cdot 1$. The coverings that turn themselves into symmetries are considered different.
\InputFile
One integer $n~(0 < n < 65536)$.
\OutputFile
Print the number of coverings of rectangle.
Input example #1
1
Output example #1
1
Input example #2
4
Output example #2
5