Problem:
 Score : 100 points    Problem Statement AtCoder Inc. holds a contest every Saturday.  There are two types of contests called ABC and ARC, and just one of them is held at a time.  The company holds these two types of contests alternately: an ARC follows an ABC and vice versa.  Given a string S representing the type of the contest held last week, print the string representing the type of the contest held this week.      Constraints  S is ABC or ARC .         Input Input is given from Standard Input in the following format:  S       Output Print the string representing the type of the contest held this week.        Sample Input 1 ABC      Sample Output 1 ARC  They held an ABC last week, so they will hold an ARC this week.

Solution (Python):
s=input()
if s=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
string = input()

if string == "ARC":
    print("ABC")
else:
    print("ARC")

Solution (Python):
S=input()
if(S=="ABC"):
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()

if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = input()
if s ==	"ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()

if S=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
contest = input()
if contest == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
s=input()
if s=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
if input().strip()=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):


import sys
import math


debug = False

def log(text):
    if debug:
        print(text)

def parse_input(lines_as_string = None):

    global debug
    lines = []
    if lines_as_string is None:
        debug = False
        
        
        lines.append(input())
    else:
        debug = True
        lines = [e for e in lines_as_string.split("\n")][1:-1]

    s = lines[0]

    return (s, )


def solve(s):

    if s == 'ARC':
        result = 'ABC'
    else:
        result = 'ARC'
    
    return  result
    


def main():
    
    result = solve(*parse_input())
    if isinstance(result, list):
        for r in result:
            print("%s" % r, sep='')
    else:
        print("%s" % result, sep='')

if __name__ == '__main__':

    main()

Solution (Python):
s = input()
if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = input()

if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()
if S == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
user = input()
if user == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
def solve():
    n = input()

    if n == 'ABC':
        return 'ARC'
    else:
        return 'ABC'




print(solve())

Solution (Python):
d=input()
if d=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = input()
if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
def main():
  S = input()
  if S == "ABC":
    print("ARC")
  else:
    print("ABC")

if __name__ == "__main__":
    main()

Solution (Python):
s=input()
if s=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S=input()

if S=="ABC":
    print("ARC")
else:
    print('ABC')

Solution (Python):
s = input()

if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
k = input()

if k == "ABC":
  print("ARC")
else :
  print("ABC")

Solution (Python):
s = input()

if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()

if s == "ABC":
    ans = "ARC"
else:
    ans = "ABC"

print(ans)

Solution (Python):
S = str(input())
if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s=input()
if s=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()
if s == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
s=input()

if s=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
i = input()
if i == "ABC":
    print("ARC")
    
else:
    print("ABC")

Solution (Python):
k = input()

if k == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
inputLine=input()
S=inputLine

if S == "ABC":
    print("ARC")
if S == "ARC":
    print("ABC")

Solution (Python):
n = input()

if n == "ABC":
    print("ARC")
else: 
    print("ABC")

Solution (Python):
n = input()

if n == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
s=input()
if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = str(input())

if s == "ABC":
    ans = "ARC"
else:
    ans = "ABC"

print(ans)

Solution (Python):
S = input()

if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s=input()
ans="ABC"
if s=="ABC":
  ans="ARC"
print(ans)

Solution (Python):
s = input()
if s[-3:] == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
a=input()

if a=='ABC':
    print('ARC')

elif a=='ARC':
    print('ABC')

Solution (Python):
s = input("")
if s == "ABC":
    print("ARC")
elif s == "ARC":
    print("ABC")
else:
    pass

Solution (Python):
moji=input()
if moji=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
a = input()
if a == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
s = input()

if s == "ARC":
    print("ABC")
else:
    print("ARC")

Solution (Python):
import itertools
import numpy as np
S = str(input())
if S == "ARC":
    print("ABC")
else:
    print("ARC")

Solution (Python):
s = input()

if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S=input()
if S=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = str(input())

if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = input()
if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = str(input())

if s[1] == "B":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = input()
if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()

if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
def solve():
    s = input()

    if s == 'ABC':
        print('ARC')
    else:
        print('ABC')


def main():
    solve()

    
    
    
    


main()

Solution (Python):
s = input()

if "ABC" == s:
    print("ARC")
else:
    print("ABC")

Solution (Python):


def main():

    
    s = input()
    
    if s == "ABC":
        print("ARC")
    if s == "ARC":
        print("ABC")

if __name__ == '__main__':
    main()

Solution (Python):
s = input()
if s == "ARC":
  print("ABC")
else:
  print("ARC")

Solution (Python):
s = input()
if s=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
def main():
    input1 = input()
    if input1 == "ABC":
        print("ARC")
    elif input1 == "ARC":
        print("ABC")
    

if __name__ == "__main__":
    main()

Solution (Python):
st = input()

if(st == "ABC"):
    print("ARC")
else:
    print("ABC")

Solution (Python):
a = input()
if a == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()

if S == 'ARC':
    print('ABC')
else:
    print('ARC')

Solution (Python):
import sys
input = sys.stdin.readline
def main():
    s = input().rstrip()
    if s == 'ABC':
        print('ARC')
    else:
        print('ABC')
if __name__ == "__main__":
    main()

Solution (Python):

import sys

import fractions
import copy
import bisect
import math
import numpy as np
import itertools
from itertools import combinations_with_replacement


from operator import itemgetter
from sys import stdin

from operator import mul
from functools import reduce
from collections import Counter





j=0
k=0
n=3
r=1
a=[0]






"1行1つの整数を入力を取得し、整数と取得する"




"12 21 332 とか入力する時に使う"
"1行に複数の整数の入力を取得し、整数として扱う"

'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

for i in number_list:
    print(number_list[i-1])

'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

'''
x=[]
y=[]
for i in range(N):
    x1, y1=[int(i) for i in input().split()]
    x.append(x1)
    y.append(y1)
print(x)
print(y)
"複数行に2数値を入力する形式 x座標とy座標を入力するイメージ"
'''

'''
mixlist=[]
for i in range(N):
    a,b=input().split()
    mixlist.append((int(a),b))
print(mixlist)
"複数行にintとstrを複合して入力するやつ，今回はリスト一つで処理している"
'''

'''



"正方行列にstr型の値を入力"
'''




'''
入力
1 2
4 5
7 8
出力結果
[[1, 2], [4, 5], [7, 8]]
'''
"列数に関して自由度の高いint型の値を入力するタイプの行列"


'''
table = [[int(i) for i in input().split()] for m in range(m)]

print(type(N))
print(N)
print(type(M))
print(M)

print(type(table))
print(table)
'''











'''
入力
1234
出力
1
[[1, 2, 3, 4]]
'''




'''
word_list= input().split(" ")
print(word_list[0])
"連続文字列の入力"
"qw er ty とかの入力に使う"
"入力すると空白で区切ったところでlistの番号が与えられる"
'''



'''
A, B, C=stdin.readline().rstrip().split()
print(A)
"リストではなく独立したstr型を入れるなら以下のやり方でOK"
'''




"aという変数に入っているものを大文字にして出力"















'''
コンビネーションの組み合わせの中身を出力する形式
for i in itertools.combinations(brray, 2)
combinationsをpermutationsにすれば順列になる
今回なら(abc133B)
入力
1 2
5 5
-2 8
出力
[[1, 2], [5, 5], [-2, 8]]
もちろん一次元リストでも使えるし
何よりiもリストのように使えるので便利
'''


'''
def cmb(n,r):
    
    r= min(n-r,r)
    
    if r == 0: return 1
    over = reduce(mul, range(n, n-r, -1))
    
    
    

    under = reduce(mul, range(1, r+1))
    
    
    
    

    return over // under
    
    
    
    
a = cmb(n, r)

'''

'''
import itertools
from itertools import combinations_with_replacement

combinationについて
以下の違いを意識しよう
combinations() p, r 長さrのタプル列、ソートされた順で重複なし

combinations_with_replacement() p, r 長さrのタプル列、ソートされた順で重複あり


使用例 　　　　　　　　　　　                  出力　　
combinations('ABCD', 2)　　　　　　　　　　　　AB AC AD BC BD CD

combinations_with_replacement('ABCD', 2)　　 AA AB AC AD BB BC BD CC CD DD
'''



'''




for i in a.most_common(n):print(i)





 


'''









'''
bisect.bisect_left(a, x, lo=0, h=len(a))
引数
a: ソート済みリスト
x: 挿入したい値
lo: 探索範囲の下限
hi: 探索範囲の上限
(lo, hiはスライスと同様の指定方法)
bisect_leftはソートされたリストaに対して順序を保ったままxを挿入できる箇所を探索します。leftが示す通り、aにすでにxが存在している場合は、挿入箇所は既存のxよりも左側になります。また、lo, hiを指定することで探索範囲を絞り込むことも可能です。デフォルトはaの全体が探索対象です。
'''














def main():


    j=0
    k=0
    
    


    "1行1つの整数を入力を取得し、整数と取得する"
    
    
    "12 21 332 とか入力する時に使う"
    "1行に複数の整数の入力を取得し、整数として扱う"

    s=input()
    if s=="ARC":
        print("ABC")
        sys.exit()
    print("ARC")
    
    
    '''
    入力
    1234
    出力
    [1, 2, 3, 4]
    '''



if __name__ == "__main__":
    main()

Solution (Python):
S = str(input())

if(S=='ABC'): print('ARC')
if(S=='ARC'): print('ABC')

Solution (Python):
s = input()
if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
import sys

S = sys.stdin.readline().strip()
print("ABC" if S == "ARC" else "ARC")

Solution (Python):
N = input()

if N == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s=input()
if s == "ARC":
    print("ABC")
else:
    print("ARC")

Solution (Python):
S = input()
if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
def main():
    s = input()
    answer = "ABC"
    if s == "ABC":
        answer = "ARC"
    else:
        answer = "ABC"
    print(answer)

if __name__ == '__main__':
    main()

Solution (Python):
S=input()
if S=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
n = input()
if n == 'ABC':
    print('ARC')
else:
    print("ABC")

Solution (Python):
S=str(input())
if S=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
input = input()
if input == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S=input()
if S =='ABC':
    print('ARC')
if S =='ARC':
    print('ABC')

Solution (Python):
print(["ARC","ABC"][input()=="ARC"])

Solution (Python):
S = input()
if S=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = input()

if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input() 
if s=="ABC":
  print("ARC")
if s=="ARC":
  print("ABC")

Solution (Python):
s = input()
if(s=='ARC'):
  print('ABC')
else:
  print('ARC')

Solution (Python):
s = input()

if s == "ARC":
  print("ABC")
else:
  print("ARC")

Solution (Python):
s=input()
if s=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
s = input()
if "B" in s:
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()
if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
from math import floor,ceil,sqrt,factorial,log
from collections import Counter, deque
from functools import reduce
import numpy as np
def S(): return input()
def I(): return int(input())
def MS(): return map(str,input().split())
def MI(): return map(int,input().split())
def FLI(): return [int(i) for i in input().split()]
def LS(): return list(MS())
def LI(): return list(MI())
def LLS(): return [list(map(str, l.split() )) for l in input()]
def LLI(): return [list(map(int, l.split() )) for l in input()]
def LLSN(n: int): return [LS() for _ in range(n)]
def LLIN(n: int): return [LI() for _ in range(n)]

N = S()

if N == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S=str(input())
if S=="ABC":
    print("ARC")
if S=="ARC":
    print("ABC")

Solution (Python):
S = input()

if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):

"""
@author: H_Hoshigi
"""
def main():
    S = input()
    answer = ""
    if S == "ABC":
        answer = "ARC"
    else:
        answer = "ABC"
    print(answer)

if __name__ == "__main__":
    main()

Solution (Python):
s = input()
if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = input()

if s == "ABC":
  print("ARC")
  
elif s == "ARC":
  print("ABC")

Solution (Python):
s = input()
if s == 'ARC':
    print('ABC')
else:
    print('ARC')

Solution (Python):
S = input()
print(["ABC","ARC"][S=="ABC"])

Solution (Python):

s = input()
if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
a = input()
if a == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
S = input()

if S == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
s = input()
if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()
if s[1] == 'B':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s=input()

if s=='ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
s = input()
if s[1] == 'B':
  print('ARC')
else:
  print('ABC')

Solution (Python):
s = input()

if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S=input().split()


if S[0]=="ABC":
    print("ARC")

else:
    print("ABC")

Solution (Python):
s = input()

if s == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
s = input()
if(s == 'ABC'):
	print('ARC')
else:
	print('ABC')

Solution (Python):
S = input()

print('ARC' if S == 'ABC' else 'ABC')

Solution (Python):
s = str(input())
if(s == "ARC"):
    print("ABC")
else:
    print("ARC")

Solution (Python):



s = input()

if s == 'ARC':
    print('ABC')
else:
    print('ARC')

Solution (Python):
S = input()

if S == 'ABC':
	print('ARC')
elif S == 'ARC':
	print('ABC')

Solution (Python):
s = input()

if(s == "ABC"):
    print('ARC')
else:
    print("ABC")

Solution (Python):
import sys

sys.setrecursionlimit(10**7)
INF = 10**10
MOD = 10**9 + 7



S = input()
if S=='ABC':
    print ('ARC')
else:
    print('ABC')

Solution (Python):
s = input()
if s == "ARC":
    print("ABC")
else:
    print("ARC")

Solution (Python):
S = input()

if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = input()
if s == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
s = input()
if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
arg=input()
if arg=='ARC':
  print('ABC')
elif arg == 'ABC':
  print('ARC')

Solution (Python):
S = input()
if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()

if S[1] == 'B':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s=input()

if s =='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S=input()
if S=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = input()
if s=="ARC":print("ABC")
else:print("ARC")

Solution (Python):
contest = input()
if contest == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
i = input()
if (i =='ABC'):
    print ('ARC')
else:
    print ('ABC')

Solution (Python):
s = input()
if s=="ARC":
  print("ABC")
else:
  print("ARC")

Solution (Python):
p=list(input())
p[1]='R' if p[1]=='B' else 'B'
print(''.join(p))

Solution (Python):
s = input()
if s == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):




import sys
input = sys.stdin.readline



def main():
    S = input().rstrip()

    if S == 'ABC':
        res = 'ARC'
    else:
        res = 'ABC'

    print(res)



main()

Solution (Python):




s = input()
ans = "ABC"
if s == "ABC":
    ans = "ARC"

print(ans)

Solution (Python):
s = input()
if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()
if s == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
S = input()
if S == "ARC":
	print("ABC")
else:
	print("ARC")

Solution (Python):
S = input()

if S == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
S = input()

if S == "ARC":
    print("ABC")
else:
    print("ARC")

Solution (Python):
S=input()
if S=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
if input() == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()
if s == "ABC":
    print("ARC")
if s == "ARC":
    print("ABC")

Solution (Python):
from math import gcd
from functools import reduce
from itertools import product

def resolve():
  contest = input()

  print("ARC" if contest == "ABC" else "ABC")


if __name__ == "__main__":
    resolve()

Solution (Python):
t = input()

if (t=="ABC"):
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = input()
print('ARC' if s == 'ABC' else 'ABC')

Solution (Python):
S = input()
if S == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
print("ARC") if input() == "ABC" else print("ABC")

Solution (Python):


def run():
    S = input()
    if S == 'ARC':
        print('ABC')
    else:
        print('ARC')


if __name__ == "__main__":
    run()

Solution (Python):
s=input()
if s=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
s=input()
if s=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
if input() == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
print('ARC' if input() == 'ABC' else 'ABC')

Solution (Python):
s = input()

if s == "ABC":
    print("ARC")

else:
    print("ABC")

Solution (Python):
a = input()

if a == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = str(input())
if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = str(input())

if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()
print('ABC') if S == 'ARC' else print('ARC')

Solution (Python):
S=input()
if S=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
s=input()

if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = str(input())

if S == 'ARC':
    print('ABC')
else:
    print('ARC')

Solution (Python):
s=input()
if s=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s=input()
print("ABC" if s == "ARC" else "ARC")

Solution (Python):
n=input()
print('ARC' if n=='ABC' else 'ABC')

Solution (Python):
s=str(input())
if s=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
S=input()

if S=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S = input()

if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()

if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()
if S == 'ABC':
	print('ARC')
else:
	print('ABC')

Solution (Python):
S = input()

if S=='ABC':
	print('ARC')
else:
	print('ABC')

Solution (Python):
s=input()

if s=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):

s = input()

if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()
if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
print('AABRCC'[input()=='ABC'::2])

Solution (Python):
S = input()

if S == "ABC":
    ans = "ARC"
else:
    ans = "ABC"
print(ans)

Solution (Python):
a = input()

if a=='ABC':
    print("ARC")
else:
    print('ABC')

Solution (Python):


s = input()
if(s == "ABC"):
    print("ARC")
else:
    print("ABC")

Solution (Python):
s=input()
if s=="ABC":
    print("ARC")
else :
    print("ABC")

Solution (Python):
s = input()
if s == "ABC":
    print("ARC")
elif s == "ARC":
    print("ABC")

Solution (Python):
print("ABC" if input()=="ARC" else "ARC")

Solution (Python):
s = input()
if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
a=input()
if a=='ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
S=input()
if S=='ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
S = str(input())
if S =='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()

if s=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
line = input()

if (line == "ABC"):
  print("ARC")
else:
  print("ABC")

Solution (Python):
n = input()

if n == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = str(input())
if s == 'ABC':
    print("ARC")
else:
    print("ABC")

Solution (Python):
n = input()

if n == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
s = input()
if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S=input()
if(S=="ABC"):
  print("ARC")
else:
  print("ABC")

Solution (Python):
c = 'ABC' if input()=='ARC' else 'ARC'
print(c)

Solution (Python):
s = input()

ans = 'ARC'
if s == 'ARC':
    ans = 'ABC'

print(ans)

Solution (Python):
S = input()

print("ABC" if S == "ARC" else "ARC")

Solution (Python):
s = input()
if s == "ABC":
	print("ARC")
else:
	print("ABC")

Solution (Python):
S = input()
if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):

n = input()
if n == 'ABC':
    print('ARC')
else:
    print("ABC")

Solution (Python):
S = input()

if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S=str(input())

if S=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
st=input()
print("ABC" if st=="ARC" else "ARC")

Solution (Python):
s = input()
if s == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
S = input()

if S == "ARC":
    print("ABC")
else:
    print("ARC")

Solution (Python):
s = input()
if s[1] == "R":
    print("ABC")
else:
    print("ARC")

Solution (Python):
S = input()

if S == "ABC":
  print("ARC")
elif S == "ARC":
  print("ABC")

Solution (Python):
a = input()
if a == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()
if S =="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
n = str(input())

if n == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):

s = input()

if s == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
s=input()
if s=='ABC':
    print('ARC')
if s=='ARC':
    print('ABC')

Solution (Python):
S = input()

if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):

s = input().split()
if s[0]=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s=input()
if s=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
x=input()
if x=="ABC":print("ARC")
else:print("ABC")

Solution (Python):
S = input()

a = 'ABC'
b = 'ARC'

if S == a:
    print(b)
else:
    print(a)

Solution (Python):
if __name__ == '__main__':
    w = input()
    abc = "ABC"
    arc = "ARC"

    if w == abc:
        print(arc)
    else:
        print(abc)

Solution (Python):
S = input()

print(
    "ARC" if S == "ABC" else "ABC"
)

Solution (Python):
import sys
readline = sys.stdin.readline

S = readline().strip()

if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
a=list(input())
if a[1]=='B':
    a[1]='R'
    
else:
    a[1]='B'
print(''.join(a))

Solution (Python):
s=input()

if s=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s=input()
if s=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
s = input()
if s == 'ARC':
    print('ABC')
else:
    print('ARC')

Solution (Python):
import sys
import math
input = sys.stdin.readline

s = input()
if s == 'ABC\n':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = str(input())

if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()
print("ABC" if s == "ARC" else "ARC")

Solution (Python):
import sys

sys.setrecursionlimit(1000000)



def main():
    s = input()
    if s == "ABC":
        print("ARC")
    else:
        print("ABC")



main()

Solution (Python):

s = input()
if s =="ABC":
    print("ARC")
if s =="ARC":
    print("ABC")

Solution (Python):
S=str(input())

if S=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()

if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()

if(s == 'ARC'):
    print('ABC')
else:
    print('ARC')

Solution (Python):

S=input()

if S=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s=input()
if s=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):


def solve():
    if s == "ABC":
        print("ARC")
    else:
        print("ABC")
    return


s= input()
solve()

Solution (Python):
s = input()

if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S=input()
if S=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()
if s=="ARC":
    print("ABC")
else:
    print("ARC")

Solution (Python):
S = input()
if S=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()

if S == 'ABC':
    print('ARC')
elif S == 'ARC':
    print('ABC')

Solution (Python):
s = input()
if s == 'ARC':
    print('ABC')
else:
    print('ARC')

Solution (Python):
s = str(input())
print("ABC" if s == "ARC" else "ARC")

Solution (Python):
S=input()

if S=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
print(["ABC", "ARC"][input() == "ABC"])

Solution (Python):
s=list(input())
if s[1]=="R":
    print("ABC")
else:
    print("ARC")

Solution (Python):


import sys
input= lambda: sys.stdin.readline().rstrip()
def pin(type=int):return map(type,input().split())
def tupin(t=int):return tuple(pin(t))

def resolve():
    S=input()
    if S=="ABC":print("ARC")
    else:print("ABC")

resolve()

Solution (Python):
S = input()
if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S=str(input())
if S=="ABC":
    print("ARC")
elif S=="ARC":
    print("ABC")

Solution (Python):




import sys
from io import StringIO
import unittest

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

def resolve():
    readline=sys.stdin.readline

    
    
    
    ss=readline().rstrip()

    if ss=="ABC":
        print("ARC")
    else:
        print("ABC")

    

    return

if 'doTest' not in globals():
    resolve()
    sys.exit()

Solution (Python):
S = input()
if S == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
s = input()

if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S = input()
if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()
ans = "ABC"
if S == "ABC":
    ans = "ARC"
print(ans)

Solution (Python):




S=input()
if S=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
N=input()

if N=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
s=input()
if s=="ARC":
  print("ABC")
else :
  print("ARC")

Solution (Python):
s = input()
print('ARC' if s == 'ABC' else 'ABC')

Solution (Python):
from math import ceil 
import numpy as np
 
def inp(): return int(input()) 
def inpm(): return map(int,input().split()) 
def inpl(): return list(map(int, input().split())) 
def inpls(): return list(input().split()) 

a = input()

if a == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
S = input()
if S[1]=='B': print('ARC')
else: print('ABC')

Solution (Python):
S = input()
if S == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
S = input()

if(S=="ABC"):
    print("ARC")
else:
    print("ABC")

Solution (Python):
S=input()
if S=='ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
import sys

input = sys.stdin.readline
MOD = 1000000007

S = input()[:-1]


if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S=input()
if S=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
S = input()
if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()
if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = str(input())
if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()

if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
n = input()
if n == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S = input()

if S[1] == 'B':
    print('ARC')
else:
    print('ABC')

Solution (Python):



import math

S = input()

if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
a=input()
if a=='ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
s = input()

if s == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
S = input()

if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S = input()
if S == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):

S = input()


print("ARC" if S == "ABC" else "ABC")

Solution (Python):
S=input()

if S=="ABC" :
    print("ARC")
else :
    print("ABC")

Solution (Python):
S = input()

if "R" in S:
    print("ABC")
else:
    print("ARC")

Solution (Python):
S = str(input())

if S == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
S = input()

if S == "ABC":
  print("ARC")
elif S == "ARC":
  print("ABC")

Solution (Python):
import sys
input=sys.stdin.readline
sys.setrecursionlimit(10 ** 6)





















S = input()[:-1]
if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
X = input()

if X == "ABC":
    print("ARC")
else:print("ABC")

Solution (Python):
S = input()






if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S = input()
if S=="ARC":
  print("ABC")
else:
  print("ARC")

Solution (Python):
s = input()

if s=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
import bisect
import copy
import heapq
import math
import sys
from collections import *
from itertools import accumulate, combinations, permutations, product
from math import gcd
def input():
    return sys.stdin.readline()[:-1]
def ruiseki(lst):
    return [0]+list(accumulate(lst))
mod=pow(10,9)+7
al=[chr(ord('a') + i) for i in range(26)]
direction=[[1,0],[0,1],[-1,0],[0,-1]]

s=input()
if s=="ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
S = input()
if(S == 'ABC'):
  print('ARC')
else:
  print('ABC')

Solution (Python):
K = input()
if K == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
s = input()

if s == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
S = input()

if S == 'ABC':
    print('ARC')
else:
    print('ABC')

Solution (Python):
s = input()
if s == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):
s = str(input())

if s == "ABC":
    print("ARC")
    exit()
else:
    print("ABC")
    exit()

Solution (Python):
a = input()

if a == 'ABC':
  print('ARC')
else:
  print('ABC')

Solution (Python):
S = input()

if S == "ABC":
    print("ARC")
else:
    print("ABC")

Solution (Python):

s = str(input())
if s=="ABC":
    print("ARC")
else:
    print("ABC")