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):



import sys  
import os
import time
import re
from pydoc import help
import string
import math
from operator import itemgetter
from collections import Counter
from collections import deque
from collections import defaultdict as dd
import fractions
from heapq import heappop, heappush, heapify
import array
from bisect import bisect_left, bisect_right, insort_left, insort_right
from copy import deepcopy as dcopy
import itertools



sys.setrecursionlimit(10**7)
INF = 10**20
GOSA = 1.0 / 10**10
MOD = 10**9+7
ALPHABETS = [chr(i) for i in range(ord('a'), ord('z')+1)]  
def LI(): return [int(x) for x in sys.stdin.readline().split()]
def LI_(): return [int(x)-1 for x in sys.stdin.readline().split()]
def LF(): return [float(x) for x in sys.stdin.readline().split()]
def LS(): return sys.stdin.readline().split()
def I(): return int(sys.stdin.readline())
def F(): return float(sys.stdin.readline())
def DP(N, M, first): return [[first] * M for n in range(N)]
def DP3(N, M, L, first): return [[[first] * L for n in range(M)] for _ in range(N)]
from inspect import currentframe


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

    return 0

if __name__ == "__main__":
    solve()

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):
def inN():
    return int(input())
def inL():
    return list(map(int,input().split()))
def inNL(n):
    return [list(map(int,input().split())) for i in range(n)]
mod = pow(10,9)+7

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

Solution (Python):
S = input()

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

Solution (Python):
n = input()

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

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

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):
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 == "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):
import sys


def solve():
    readline = sys.stdin.buffer.readline
    mod = 10 ** 9 + 7
    s = str(readline().rstrip().decode('utf-8'))
    print("ABC" if s == "ARC" else "ARC")


if __name__ == '__main__':
    solve()

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

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

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

Solution (Python):
import sys
def input(): return sys.stdin.readline().rstrip()

S = input()

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

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

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

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

Solution (Python):
list = ['ABC', 'ARC']

s = input()

i = list.index(s)
answer = list[1 - i]

print(answer)

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

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

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

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

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

Solution (Python):
S = input()

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

Solution (Python):
i = input()
if(i=='ABC'):
    print('ARC')
else:
    print('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):
print('A%sC'%'BR'[input()<'AR'])

Solution (Python):
print('A'+'BR'[input()<'AR']+'C')

Solution (Python):
s = input()
if s[1] == "B":
  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):

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

if __name__ == "__main__":
    main()

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

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

Solution (Python):
s = input()

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

Solution (Python):
S = input()
ans = {'ABC': 'ARC', 'ARC': 'ABC'}

print(ans[S])

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):
def main(S):
    if S == 'ABC':
        return 'ARC'
    else:
        return 'ABC'

if __name__ == '__main__':
    S = input()
    ans = main(S)
    print(ans)

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

Solution (Python):
s = input()

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

Solution (Python):

s=list(input())
if s[1]=='B':
    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()

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

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

Solution (Python):


ABC = "ABC"
ARC = "ARC"


def solve(S: str):
    if S == ABC:
        return ARC
    else:
        return ABC


def main():
    S = input().strip()
    answer = solve(S)
    print(answer)


if __name__ == "__main__":
    main()

Solution (Python):
S = str(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()

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

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


main()

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):
import sys
input = sys.stdin.readline

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

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()
ans = 'ABC' if s == 'ARC' else '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):
text = input()
if text == "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 = 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):
contest_S = input()

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

Solution (Python):
s = input()

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

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

if '__main__' == __name__:
    resolve()

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

Solution (Python):
S = input()

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

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

Solution (Python):

S = input()


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

Solution (Python):

S = input()


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

Solution (Python):

S = input()


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

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):
S = str.upper(input())

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

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):
if input() == '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()



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):
x = input()

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

Solution (Python):
A=['ABC','ARC']
S=input()
if S==A[0]:
  print(A[1])
else:
  print(A[0])

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 == "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):
S = input()

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

print(output)

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

Solution (Python):
S = str(input())
W = ['B', 'R']

if S == 'ABC':
    p = 1
else:
    p = 0

print('A'+W[p]+'C')

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')
else:
    print('Mistake...')

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

Solution (Python):












s = input()


next_contest = "ret"
if s == "ABC":
    next_contest = "ARC"
elif s == "ARC":
    next_contest = "ABC"

print(next_contest)

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

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

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

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

Solution (Python):
s = input()

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

Solution (Python):
name = input()

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

Solution (Python):
S = input()

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

Solution (Python):





S = str(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):
def main():
    S = input()

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

    print(ans)


if __name__ == "__main__":
    main()

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

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

Solution (Python):



S = input()

result = 'ABC'

if S == result:
    result = 'ARC'

print(result)

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):
S = input()

if S == 'ABC':
    answer = 'ARC'
elif S == 'ARC':
    answer = 'ABC'
else:
    answer = '入力間違い【ABC】【ARC】を入力'

print(answer)

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

Solution (Python):
s = input()

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

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

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

Solution (Python):



contest=input()


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

Solution (Python):



contest=input()


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

Solution (Python):
S = input()
if S == 'ABC':
 print("ARC")
elif S =='ARC':
    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):
i = input()
if i[1] == "R":
    print("ABC")
else: print("ARC")

Solution (Python):
x=str(input())
if x[1]=="B":
  print("ARC")
else:
  print("ABC")

Solution (Python):
contest= input()

if contest == 'ABC':
    print('ARC')
elif contest =='ARC':
    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()
O = 'ABC' if S == 'ARC' else 'ARC'
print(O)

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):
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')

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()

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

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

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

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

Solution (Python):
S = input()

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

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

Solution (Python):
str = input()
if str=="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[1] == "R":
  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')
else:
    print('入力に誤りがあります。ABCまたはARCを入力してください。')

Solution (Python):

S  = input()


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

print(answer)

Solution (Python):
S = input()
List = {'ABC':'ARC', 'ARC':'ABC'}
print(List[S])

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

Solution (Python):
print({'ABC':'ARC', 'ARC':'ABC'}[input()])

Solution (Python):















S = input()

if S == 'ABC':
    answer = 'ARC'
elif S == 'ARC':
    answer = 'ABC'

print(answer)

Solution (Python):
S=input()

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

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

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

Solution (Python):
S = input()
print_list = ['ABC', 'ARC']
value = 1-(print_list.index(S))
print(print_list[value])

Solution (Python):
S = input()
print_list = ['ABC', 'ARC']
value = print_list.index(S)
if value == 0:
    print(print_list[1])
else:
    print(print_list[0])

Solution (Python):

S = input()


if S == "ABC":
    print("ARC")
elif S == "ARC":
    print("ABC")
else:
    print("入力内容が正しくありません。")

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

Solution (Python):
S = input()

if S == 'ABC' :
    answer = 'ARC'
elif S == 'ARC' :
    answer = 'ABC'

print(answer)

Solution (Python):
S = input()

if S == 'ABC':
    print('ARC')
elif S == 'ARC':
    print('ABC')
else:
    print('入力が間違っています')

Solution (Python):

s = str(input())


if s == "ABC":
    answer = "ARC"
elif s == "ARC":
    answer = "ABC"

print(answer)

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')
elif S == 'ARC':
    print('ABC')
else:
    print('入力が間違っています')

Solution (Python):
S = input()

if S == 'ABC':
    print('ARC')
elif S == 'ARC':
    print('ABC')
else:
    print('ABC または　ARC を入力してください')

Solution (Python):
print('ABC' if input() == '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):
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 = iter(sys.stdin.read().splitlines()).__next__

sys.setrecursionlimit(10000)

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

Solution (Python):
import math
import numpy as np
import sys
import os
from operator import mul

sys.setrecursionlimit(10**7)

def _S(): return sys.stdin.readline().rstrip()
def I(): return int(_S())
def LS(): return list(_S().split())
def LI(): return list(map(int,LS()))

if os.getenv("LOCAL"):
    inputFile = basename_without_ext = os.path.splitext(os.path.basename(__file__))[0]+'.txt'
    sys.stdin = open(inputFile, "r")
INF = float("inf")
IINF = 10 ** 18
MOD = 10 ** 9 + 7


S=_S()

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

Solution (Python):
n = ["ABC", "ARC", "ABC"]
a = input()
print(n[n.index(a) + 1])

Solution (Python):
import sys
import numpy as np
from math import ceil as C, floor as F, sqrt
from collections import defaultdict as D, Counter as CNT
from functools import reduce as R
 
ALP = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
alp = 'abcdefghijklmnopqrstuvwxyz'
def _X(): return sys.stdin.readline().rstrip().split(' ')
def _S(ss): return tuple(ss) if len(ss) > 1 else ss[0]
def S(): return _S(_X())
def Ss(): return list(S())
def _I(ss): return tuple([int(s) for s in ss]) if isinstance(ss, tuple) else int(ss)
def I(): return _I(S())
def _Is(ss): return list(ss) if isinstance(ss, tuple) else [ss]
def Is(): return _Is(I())

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

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

Solution (Python):

S = input('')


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

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

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

Solution (Python):

last_contest = input()

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

Solution (Python):
contest = "ABC""ARC"

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

Solution (Python):
tempStr = input()

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

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

Solution (Python):
s=input()

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

Solution (Python):

S = input()


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

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):





S = input()


if S == 'ABC':
    
    answer = 'ARC'
elif S == 'ARC':
    
    answer = 'ABC'


print(answer)

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):
s = input()
if s[1] == 'R':
  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')
else:
    print('ABC')

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

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

Solution (Python):
last_week_contest = input()

if last_week_contest == 'ABC':
    this_week_contest = 'ARC'
    print(this_week_contest)

elif last_week_contest == 'ARC':
    this_week_contest = 'ABC'
    print(this_week_contest)

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

Solution (Python):
place = input('')

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

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

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

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

Solution (Python):
x = input()
if x == "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):
s = input()

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

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

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

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):
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):
import sys
input = sys.stdin.readline
ins = lambda: input().rstrip()
ini = lambda: int(input().rstrip())
inm = lambda: map(int, input().split())
inl = lambda: list(map(int, input().split()))

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