a = int(input())
b=0
c = ''
while True:
b = a//2
c+=str(a%2)
if b == 0:
break
a=b
c = c[::-1]
print(c)
YSA9IGludChpbnB1dCgpKQpiPTAKYyA9ICcnCgp3aGlsZSBUcnVlOgoJYiA9IGEvLzIgCgljKz1zdHIoYSUyKQoJaWYgYiA9PSAwOgoJCWJyZWFrCglhPWIKCQpjID0gY1s6Oi0xXQpwcmludChjKQ==