Smeke decides to join AtCoder Beginner Contest (ABC) if his current rating is less than 1200, otherwise, he participates in AtCoder Regular Contest (ARC). Given Smeke's current rating, x, print ABC if he participates in ABC, and print ARC otherwise.

Constraints:
1 ≤ x ≤ 3,000
x is an integer.

Input:
The input is given from Standard Input in the following format:
x

Output:
Print the answer.

Sample Input 1:
1000

Sample Output 1:
ABC
Smeke's current rating is less than 1200, so the output should be ABC.

Sample Input 2:
2000

Sample Output 2:
ARC
Smeke's current rating is not less than 1200, so the output should be ARC.

# Buggy version:
x=int(input())
if(x>1200):
    print('ABC')
else:
    print('ARC')

# Fixed version:
x = int(input());

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

# Buggy version:
if input() > 1200:
  print("ABC")
else:
  print("ARC")

# Fixed version:
if 1200 > int(input()):
    print('ABC')
else:
    print('ARC')

# Buggy version:
print("A"+"RB"[input()<1200]+"C")

# Fixed version:
print('A'+'RB'[int(input())<1200]+'C')

# Buggy version:
import sys

def yn(b):
    print("Yes" if b==1 else "No")
    return

def resolve():
    readline=sys.stdin.readline
    x=int(readline().strip())
    if x>1200:
        print("ABC")
    else:
        print("ARC")
    #n,m,k=list(map(int, readline().strip().split()))
    #arr=list(map(int, readline().strip().split()))
    #n=int(readline().strip())
    #yn(1)

    return


resolve()

# Fixed version:
import sys

def yn(b):
    print("Yes" if b==1 else "No")
    return

def resolve():
    readline=sys.stdin.readline
    x=int(readline().strip())
    if x<1200:
        print("ABC")
    else:
        print("ARC")
    #n,m,k=list(map(int, readline().strip().split()))
    #arr=list(map(int, readline().strip().split()))
    #n=int(readline().strip())
    #yn(1)

    return


resolve()

# Buggy version:
import sys, re, os
from collections import deque, defaultdict, Counter
from math import ceil, sqrt, hypot, factorial, pi, sin, cos, radians
# from fractions import gcd
from itertools import permutations, combinations, product, accumulate
from operator import itemgetter, mul
from copy import deepcopy
from string import ascii_lowercase, ascii_uppercase, digits
from functools import reduce
from bisect import bisect_left, insort_left
from heapq import heapify, heappush, heappop

INPUT = lambda: sys.stdin.readline().rstrip()
INT = lambda: int(INPUT())
MAP = lambda: map(int, INPUT().split())
S_MAP = lambda: map(str, INPUT().split())
LIST = lambda: list(map(int, INPUT().split()))
S_LIST = lambda: list(map(str, INPUT().split()))

sys.setrecursionlimit(10 ** 9)
INF = float('inf')
mod = 10 ** 9 + 7


def main():
    N = INT()
    print("ARC" if N < 1200 else "ARC")


if __name__ == '__main__':
    main()


# Fixed version:
import sys, re, os
from collections import deque, defaultdict, Counter
from math import ceil, sqrt, hypot, factorial, pi, sin, cos, radians
# from fractions import gcd
from itertools import permutations, combinations, product, accumulate
from operator import itemgetter, mul
from copy import deepcopy
from string import ascii_lowercase, ascii_uppercase, digits
from functools import reduce
from bisect import bisect_left, insort_left
from heapq import heapify, heappush, heappop

INPUT = lambda: sys.stdin.readline().rstrip()
INT = lambda: int(INPUT())
MAP = lambda: map(int, INPUT().split())
S_MAP = lambda: map(str, INPUT().split())
LIST = lambda: list(map(int, INPUT().split()))
S_LIST = lambda: list(map(str, INPUT().split()))

sys.setrecursionlimit(10 ** 9)
INF = float('inf')
mod = 10 ** 9 + 7


def main():
    N = INT()
    print("ABC" if N < 1200 else "ARC")


if __name__ == '__main__':
    main()

# Buggy version:
a=int,input()
if a<1200:
  print('ABC')
else:
  print('ARC')

# Fixed version:
a = int(input(), 10)
if a < 1200:
    print("ABC")
else:
    print("ARC")

# Buggy version:
#x,t=list(map(int,input().split()))
x = int(input())
if x <= 1200:
    print("ABC")
else:
    prit("ARC")
    


# Fixed version:
#x,t=list(map(int,input().split()))
x = int(input())
if x < 1200:
    print("ABC")
else:
    print("ARC")

# Buggy version:
x = int(input())
if X < 1200:
    print("ABC")
else:
    print("ARC")

# Fixed version:
X=int(input())
if(X<1200):
  print("ABC")
else:
  print("ARC")

# Buggy version:
x = map(int, input().split())

if x < 1200:
  print('ABC')
else:
  print('ARC')

# Fixed version:
x, = map(int , input().split())
if( x < 1200 ):
    print('ABC')
else:
    print('ARC')

# Buggy version:
#coding:utf-8

x = int(input())

if x >= 120:
  print('ARC')
else:
  print('ABC')

# Fixed version:
#coding:utf-8

x = int(input())

if x >= 1200:
  print('ARC')
else:
  print('ABC')

# Buggy version:
rate = int(input())
if rate < 1200:
  print("ABC")
else:
  print("ARC)

# Fixed version:
rate = int(input())

print("ABC") if rate < 1200 else print("ARC")

# Buggy version:
z = int(input())
if s < 1200:
    print('ABC')
else:
    print('ARC')


# Fixed version:
s = int(input())
if s < 1200:
    print('ABC')
else:
    print('ARC')

# Buggy version:
n = input()
if n > = 1200:
    print "ARC"
else:
    print "ABC"

# Fixed version:
n = int(input())
if n >= 1200:
  print("ARC")
else:
  print("ABC")

# Buggy version:
import sys, os

f = lambda:list(map(int,input().split()))
if 'local' in os.environ :
    sys.stdin = open('./input.txt', 'r')

def solve():
    x = f()[0]
    if x >= 1200:
        print("ARC")
    else print("ABC")

solve()


# Fixed version:
import sys, os

f = lambda:list(map(int,input().split()))
if 'local' in os.environ :
    sys.stdin = open('./input.txt', 'r')

def solve():
    x = f()[0]
    if x >= 1200:
        print("ARC")
    else:
        print("ABC")

solve()

# Buggy version:
sumeke=input()
sumeke=int(sumeke)
sumeke=1200
if sumeke < 1200:
	print("ABC")
else:
	print("ARC")

# Fixed version:
sumeke = int(input())

if sumeke < 1200 :
    print("ABC")
else :
    print("ARC")

# Buggy version:
x = int(input())
print("ABC" if x<=1199 else "ARC )

# Fixed version:
x = int(input())
print("ABC" if x<=1199 else "ARC")

# Buggy version:
from statistics import mean, median,variance,stdev
import sys
import math

x = input().split()
#y = input().split()
a = []
#for i in range(len(x)):
 #  a.append(int(x[i]))
if a[0] <1200:print("ABC")
else:print("ARC")

# Fixed version:
from statistics import mean, median,variance,stdev
import sys
import math

x = input().split()
#y = input().split()
a = []
for i in range(len(x)):
   a.append(int(x[i]))
if a[0] <1200:print("ABC")
else:print("ARC")

# Buggy version:
if int(input()) > 1200:
  print("ABC")
else:
  print("ARC")

# Fixed version:
print("ABC" if 1200>int(input()) else "ARC")

# Buggy version:
a = int(input())
print('ABC') if a>=1200 else print('ARC')


# Fixed version:
a = int(input())
print('ARC') if a>=1200 else print('ABC')

# Buggy version:
print(("ABC","ARC")[int(input())<1200])

# Fixed version:
print(["ARC", "ABC"][int(input()) < 1200])

# Buggy version:
print('ABC'(int(input())<1200)or'ARC')

# Fixed version:
print('ABC'*(int(input())<1200)or'ARC')

# Buggy version:
print('ABC' if int(input() < 1200 else 'ARC'))

# Fixed version:
if int(input())<1200:
  print("ABC")
else:
  print("ARC")

# Buggy version:
x = int(input()
print('ARC' if x >= 1200 else 'ABC')


# Fixed version:
print('ARC') if int(input()) >= 1200 else print('ABC')

# Buggy version:
n = int(input)
if n<1200:
  print("ABC")
 else:
  print("ARC")

# Fixed version:
n = int(input())
print('ABC' if n <1200 else 'ARC')

# Buggy version:
a = int(input())
 if a >= 1200:
    print("ARC");
else:
    print("ABC");

# Fixed version:

a = int(input())

if a >= 1200:
    print("ARC");
else:
    print("ABC");

# Buggy version:
a=int(input())

if(a<1200):
    print("ABC")
else:
    print("ARC)


# Fixed version:
a = int(input())

if a < 1200 : print ("ABC")
else : print ("ARC")

# Buggy version:
if __name__=="__main__":
    s = int(input())
    if(s < 1200):
	print("ABC")
    else:
        print("ARC")

# Fixed version:
if __name__=="__main__":
    s = int(input())
    if(s < 1200):
        print("ABC")
    else:
        print("ARC")

# Buggy version:
rate = int(input())
if n < 1200: print("ABC")
else: print("ARC")

# Fixed version:
n = int(input())
if n < 1200:
	print('ABC')
else:
	print('ARC')

# Buggy version:
score = input()
if (score < 1200):
  print("ABC")
else:
  print("ARC")

# Fixed version:
score = int(input())
if score < 1200:
    print("ABC")
else:
    print("ARC")

# Buggy version:
x = int(input)
print("ABC") if x < 1200 else print("ARC")

# Fixed version:
x = int(input())
ans = 'ABC' if x<1200 else 'ARC'
print(ans)

# Buggy version:
x = int(input())
if x < 1200:
print('ABC')

else:
print('ARC')

# Fixed version:
x = int(input())

if x < 1200:
    string = "ABC"
else:
    string = "ARC"

print(string)

# Buggy version:
rate = input()
if rate < 1200 :
  print( "ABC" )
else :
  print( "ARC" )

# Fixed version:
rate = int(input())
if rate < 1200:
  print("ABC")
else:
  print("ARC")

# Buggy version:
x = input()
if x < 1200:
    print('ABC')
else:
    print('ARC')


# Fixed version:
x = int(input())
if x<1200:
	print("ABC")
else:
	print("ARC")

# Buggy version:
if int(input())>=1200:
	print("ARC")
else print("ABC")

# Fixed version:

rate = int(input())
if rate >= 1200:
    print('ARC')
else:
    print('ABC')