import sys

import math

import random

import threading

import time

from functools import reduce



a = int(eval(input()));



if a < 1200:

    print("ABC")

else:

    print("ARC");
x=int(eval(input()))

if (x>=1200):

    print('ARC')

else:

    print('ABC')

import sys
import math
import random
import threading
import time
from functools import reduce

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

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

-import sys -import math -import random -import threading -import time -from functools import reduce - -a = int(eval(input())) -if a < 1200: +x = int(eval(input())) +if x >= 1200: +    print("ARC") +else: -else: -    print("ARC")