codejam 2021 append sort [closed]

any idea how its done https://codingcompetitions.withgoogle.com/codejam/round/000000000043585d/00000000007549e5

i am trying to sort but i am so confused atleast explain me the basic idea of how this can be solved i tried this but it didnt solve

'''python

T = int(input())  import math      def get_value(number1,number2):      cost = 0        if number1 == number2:          number2 = number2*10          cost=1      elif number2>number1:          cost=0      else:          digit1 = int(math.log10(number1))          digit2 = int(math.log10(number2))            if  digit1 == digit2:              cost+=1              number2 = number2*10          else:              list1 = [int(i) for i in str(number1)]              list2 = [int(i) for i in str(number2)]                        number2 = number2*10*(digit1-digit2)              cost+= (digit1-digit2)                while(int(math.log10(number2))<int(math.log10(number1))):                  number2=number2*10                  cost+=1              if number2==number1:                  number2+=1              elif number2<number1:                  digit2 = int(math.log10(number2))                  number2 = (number1-number2)+number1                  cost+= int(math.log10(number2))-digit2        print(number1,number2,cost)        return cost,number2    for j in range(T):        n = int(input())      lista = list(map(int,input().split()))      back = lista[0]      ans = 0      for number in lista[1:]:          cost,number= get_value(back,number)          ans+=cost          back=number        if j != (T-1):          print("Case #"+str(j+1)+": "+str(ans))      else:          print("Case #"+str(j+1)+": "+str(ans), end='')  

'''

https://stackoverflow.com/questions/67030107/codejam-2021-append-sort April 10, 2021 at 09:51AM