x = int (eval(input ()))

if x < 1200:

  print ('ABC')

else:

  print ('ARC')

x = int (eval(input ()))

if x>=1200:

  print ('ARC')

else:

  print ('ABC')
x = int(eval(input()))
if x < 1200:
    print("ABC")
else:
    print("ARC")

x = int(eval(input()))
if x >= 1200:
    print("ARC")
else:
    print("ABC")

-if x < 1200: +if x >= 1200: +    print("ARC") +else: -else: -    print("ARC")