# aniruddh doki
# 4280 E

# convert integer to binary number: the bin() method
def convertBin(x:int)->str:
  return bin(x)

# convert integer to binary number: the manual way way
def convertManual(x):
  #output = ['0b']
  output = "0b"
  start = x
  if start == 0:
    return '0b0'
  if start == 1:
    return '0b1'
  while start != 0:
    #output.append(str(start%2))
    output += str(start%2)
    start //= 2
  return output


def main():
  print('bin()')
  print(f'0: {convertBin(0)}')
  print(f'19: {convertBin(19)}\n')
  print('manual()')
  print(f'0: {convertManual(0)}')
  print(f'19: {convertManual(19)}\n')

main()