def findComplement(self, num):
s = []
while num > 0: # 5
r = str(num % 2)#
s.append(r)
num = num // 2
s = s[::-1]
b = "".join(d for d in s)
x = b.replace('0','2').replace('1','0').replace('2','1')
sum = 0
i = 0
x = int(x)
while x > 0:
r1 = x % 10
m = r1 * pow(2,i)
i = i + 1
x = x // 10
sum = sum + m
return sum