'''
Given an array of tickets(start, destination)
[('SF', 'NY'), ('SJ', 'Chicago'), ('Chicago', 'LA'), ('NY', 'SJ')]
Find the order of which the tickets were used by this person

result:
SF -> NY -> SJ -> Chicago -> LA


Hint: ask me but try to look into the pattern. As you ask me more hints, it will lower your chance!

Square
'''

def Solution(tickets: list):
    