# Python Program to Implement Shell Sort 
 def gaps(size):
    # uses the gap sequence 2^k - 1: 1, 3, 7, 15, 31, ...
    length = size.bit_length()
    for k in range(length - 1, 0, -1):
        yield 2**k - 1
 
 
def shell_sort(alist):
    def insertion_sort_with_gap(gap):
        for i in range(gap, len(alist)):
            temp = alist[i]
            j = i - gap
            while (j >= 0 and temp < alist[j]):
                alist[j + gap] = alist[j]
                j = j - gap
            alist[j + gap] = temp
 
    for g in gaps(len(alist)):
        insertion_sort_with_gap(g)
 
 
alist = input('Enter the list of numbers: ').split()
alist = [int(x) for x in alist]
shell_sort(alist)
print('Sorted list: ', end='')
print(alist)