﻿Money with Baba
Baba is very kind to beggars and every day Baba donates half of the amount he has when ever a beggar requests him. The money M left in Baba's hand is passed as the input and the number of beggars B who received the alms are passed as the input. The program must print the money Baba had in the beginning of the day.
Input Format:
The first line denotes the value of M.
The second line denotes the value of B.
Output Format:
The first line denotes the value of money with Baba in the beginning of the day.
Example Input/Output:
Input:
100
2
Output:
400
Explanation:
Baba donated to two beggars. So when he encountered second beggar he had 100*2 = Rs.200 and when he encountered 1st he had 200*2 = Rs.400.
n=int(input())
m=int(input())
a=n
c=1
if(m==0 or n==0):print("0")
else:
    while(c<=m):
        a=a*2
        c+=1
    print(a)
