def fibonacci(n):
    if n==0:
        return 0
    elif n==1:
        return 1
    else:
        return fibonacci(n-1)+fibonacci(n-2)

n=int(input('enter number:'))
if n<0:
    print('enter positive number')
else:
    print('Fibonacci Series: ',end='')
    for i in range(n):
        print(fibonacci(i),end=' ')