Олимпиадный тренинг

Задача 27314. Difference


Print the difference between the number of binary trees with N leaves and the number of partitions of the N-gon into triangles.
 
Input
The input is a single number - N (\(1 <= N <= 10\))
 
Output
Print one number - the desired difference
 

 

Examples
# Input Output
1 1 0