def fib(n):
    """
    Recursive function to compute Fibonacci numbers
    @param int n: Integer
    @rtype: int
    """
    if n == 0:
        return 0
    elif n == 1:
        return 1
    else:
        return fib(n - 1) + fib(n - 2)

print (fib(7))
print (fib(12))
print (fib(10))
print (fib(11))