Record Detail

#	Status	Time Cost	Memory Cost
#1	Accepted	14ms	3.012 MiB
#2	Accepted	13ms	3.02 MiB
#3	Accepted	17ms	3.02 MiB
#4	Accepted	15ms	3.02 MiB
#5	Accepted	14ms	3.02 MiB
#6	Accepted	14ms	3.102 MiB
#7	Accepted	14ms	2.895 MiB
#8	Accepted	29ms	3.004 MiB
#9	Accepted	36ms	3.117 MiB
#10	Accepted	15ms	3.02 MiB
#11	Accepted	14ms	3.031 MiB
#12	Accepted	14ms	2.973 MiB
#13	Accepted	14ms	2.984 MiB
#14	Accepted	32ms	3.02 MiB
#15	Accepted	14ms	3.023 MiB

x=int(input())
num=x
while x>=2:
    num=num+(x//2)
    x=(x//2)+(x%2)
print(num)

Accepted