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

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

Solution (Python):
lastweek_contest = input()
thisweek_contest = ""

if lastweek_contest == "ABC":
    thisweek_contest = "ARC"
elif lastweek_contest == "ARC":
    thisweek_contest = "ABC"
else:
    thisweek_contest = "InputError: please enter correct contest name."

print(thisweek_contest)

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

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

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

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

Solution (Python):
S = input()

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

Solution (Python):
print 'ARC' if raw_input() == 'ABC' else '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):
x = input()
def f(x):
    if x == "ABC":
        print("ARC")
    elif x == "ARC":
        print("ABC")
    else:
        print("invalid input")
f(x)

Solution (Python):
print('AABRCC'['B'in input()::2])

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):
test = input()

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

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

Solution (Python):
n = input()

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

Solution (Python):
a = input()

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

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

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

Solution (Python):
import sys

stdin = sys.stdin
inf = 1 << 60
mod = 1000000007

ni      = lambda: int(ns())
nin     = lambda y: [ni() for _ in range(y)]
na      = lambda: list(map(int, stdin.readline().split()))
nan     = lambda y: [na() for _ in range(y)]
nf      = lambda: float(ns())
nfn     = lambda y: [nf() for _ in range(y)]
nfa     = lambda: list(map(float, stdin.readline().split()))
nfan    = lambda y: [nfa() for _ in range(y)]
ns      = lambda: stdin.readline().rstrip()
nsn     = lambda y: [ns() for _ in range(y)]
ncl     = lambda y: [list(ns()) for _ in range(y)]
nas     = lambda: stdin.readline().split()

s = ns()
print("A" + chr(ord('B') ^ ord('R') ^ ord(s[1])) + "C")

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):
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()
a = ["ABC", "ARC"]
print(a[(a.index(s)+1)%len(a)])

Solution (Python):

s = input()
a = ["ABC", "ARC"]
print(a[(a.index(s)+1)%len(a)])

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

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

Solution (Python):
a = input()

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

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

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

Solution (Python):
def f(a):
    if a == 'ABC':
        return 'ARC'
    else:
        return 'ABC'
x = input()
print(f(x))

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

Solution (Python):
data = input()

if data.lower() == '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")
else:
  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()
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):
a=input()
if a=="ABC":
  print("ARC")
else:
  print("ABC")

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

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

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

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

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

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

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

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

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

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

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

Solution (Python):


input1 = input().rstrip()
if input1=="ABC":
    print("ARC")
elif input1=="ARC":
    print("ABC")
else:
    print(0)

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

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

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

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

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

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

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

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

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

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

Solution (Python):

from collections import defaultdict, deque
from heapq import heappush, heappop
from itertools import permutations
import sys
import math
import bisect

def LI(): return [int(x) for x in sys.stdin.readline().split()]


def I(): return int(sys.stdin.readline())


def LS(): return [list(x) for x in sys.stdin.readline().split()]


def S():
    res = list(sys.stdin.readline())
    if res[-1] == "\n":
        return res[:-1]
    return res


def IR(n):
    return [I() for i in range(n)]


def LIR(n):
    return [LI() for i in range(n)]


def SR(n):
    return [S() for i in range(n)]


def LSR(n):
    return [LS() for i in range(n)]


sys.setrecursionlimit(1000000)
mod = 1000000007


def solve():
    s = S()
    if s == ['A','B','C']:
        print('ARC')
    else:
        print('ABC')
    return


if __name__ == "__main__":
    solve()

Solution (Python):
S = str(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()
se = {'ABC','ARC'}
print(list(se-{s})[0])

Solution (Python):
S = input()

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

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

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

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

Solution (Python):
prev = input()

mid = "B" if prev[1] == "R" else "R"

print("A" + mid + "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):
print("ABC" if input() != "ABC" else "ARC")

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

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

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

if __name__ == '__main__':
    main()

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

Solution (Python):
s = input()

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

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

Solution (Python):
import math
import copy








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

Solution (Python):
contest = input()

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

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

Solution (Python):
S = input()
assert S == "ABC" or "ARC", "Sは、ABCまたはARCです"
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')
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):
import sys
sys.setrecursionlimit(10 ** 5 + 10)
def input(): return sys.stdin.readline().strip()

def resolve():
    
    s = str(input())
    print('ARC' if s=='ABC' else 'ABC')
    
resolve()

Solution (Python):

import sys


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


def main():
    S = sys.stdin.readline().strip()  
    solve(S)


if __name__ == '__main__':
    main()

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):
import sys

Lastcontest=input()

if Lastcontest == "ABC":
  print("ARC")
elif Lastcontest == "ARC":
  print("ABC")
else:
  sys.exit()

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):
import math,string,itertools,fractions,heapq,collections,re,array,bisect,sys,copy,functools
import time,random

sys.setrecursionlimit(10**7)
inf = 10**20
eps = 1.0 / 10**10
mod = 10**9+7
mod2 = 998244353
dd = [(-1,0),(0,1),(1,0),(0,-1)]
ddn = [(-1,0),(-1,1),(0,1),(1,1),(1,0),(1,-1),(0,-1),(-1,-1)]

def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(): return [list(map(int, l.split())) for l in sys.stdin.readlines()]
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 S(): return input()
def pf(s): return print(s, flush=True)
def pe(s): return print(str(s), file=sys.stderr)
def JA(a, sep): return sep.join(map(str, a))
def JAA(a, s, t): return s.join(t.join(map(str, b)) for b in a)


def main():
    s = S()
    if s == "ABC":
        return "ARC"

    return "ABC"


print(main())

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):
nx = {'ABC': 'ARC', 'ARC': 'ABC'}
print(nx[input()])

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

Solution (Python):
a = input()[1]
print(f'A{"R" if a=="B" else "B"}C')

Solution (Python):
s = input()
s_list = list(s)
if s[1]=="R":
    s_list[1]="B"
else:
    s_list[1]="R"
print("".join(s_list))

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

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

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

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

Solution (Python):



s = input()

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

Solution (Python):

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

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 = str(input())

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

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

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

Solution (Python):


def read_int():
    return int(input().strip())


def read_ints():
    return list(map(int, input().strip().split(' ')))


def solve():
    S = input().strip()
    if S == 'ABC':
       return 'ARC'
    return 'ABC'


if __name__ == '__main__':
    print(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 == "ABC":
  print("ARC")
else:
  print("ABC")

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

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

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

Solution (Python):

import sys


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



def main():
    def iterate_tokens():
        for line in sys.stdin:
            for word in line.split():
                yield word
    tokens = iterate_tokens()
    S = next(tokens)  
    solve(S)

if __name__ == '__main__':
    main()

Solution (Python):
S = input()

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

if S == "ARC":
    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):
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[1] == "R":
  ans = "ABC"
else:
  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[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')
    
if s == 'ARC':
    print('ABC')

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


if __name__ == "__main__":
    main()

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

Solution (Python):
S = input()

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

print(result)

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

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

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

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

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

Solution (Python):
def main():
    a = 'ABC'
    r = 'ARC'
    s = input()
    if s == a:
        print(r)
    else:
        print(a)

if __name__ == '__main__':
    main()

Solution (Python):
x=input();

if x == "ABC" :
 	print("ARC");
    
elif x == "ARC" :
 	print("ABC");

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

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

Solution (Python):
def culc(S):
  if S == "ABC":
    print("ARC")
  elif S =="ARC":
    print("ABC")
  else:
    print("error")

culc(input())

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

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

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

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

Solution (Python):
print(["ABC","ARC"][input()[1]=='B'])

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):
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] in ['B']:
  print("ARC")
else:
  print("ABC")

Solution (Python):
print('A'+'BR'[(input()=='ABC')]+'C')

Solution (Python):
S = input()

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

Solution (Python):
ip=input()
if ip=="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):
inputStr = input()

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

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

Solution (Python):
data = ["ABC", "ARC"]
if input() == data[0]:
  print(data[1])
else:
  print(data[0])

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

Solution (Python):

import sys


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



def main():
    def iterate_tokens():
        for line in sys.stdin:
            for word in line.split():
                yield word
    tokens = iterate_tokens()
    S = next(tokens)  
    solve(S)

if __name__ == '__main__':
    main()

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):
import sys

if sys.stdin.readline().split()[0] == 'ARC':
  print('ABC')
else:
  print('ARC')

Solution (Python):

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

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

Solution (Python):
S = input().count("R")

if S == 1:
    print("ABC")

else:
    print("ARC")

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

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

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

else:
    print("ABC")

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

Solution (Python):

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

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

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

Solution (Python):



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

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

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

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

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

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

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

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

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

Solution (Python):
s=input().rstrip()
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":
    ans = "ARC"
else:
    ans = "ABC"
print(ans)

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

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

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

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

Solution (Python):
import sys
input = lambda : sys.stdin.readline().strip()
s = input()
if s=="ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
print(*{'ABC','ARC'}-{input()})

Solution (Python):
print('A%sC'%'BR'[id(id)%9%2])

Solution (Python):
import sys
sys.setrecursionlimit(10**6)

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

Solution (Python):

def main():
    S = input().rstrip()
    print("ABC" if S == "ARC" else "ARC")


if __name__ == "__main__":
    main()

Solution (Python):
print(*{'ABC','ARC'}-{input()})

Solution (Python):

import sys


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

def main():
    def iterate_tokens():
        for line in sys.stdin:
            for word in line.split():
                yield word
    tokens = iterate_tokens()
    S = next(tokens)  
    solve(S)

if __name__ == '__main__':
    main()

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

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

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

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

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

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

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

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

Solution (Python):
print('A'+'RB'[input()[1]=='R']+'C')

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

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

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

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

Solution (Python):
def run():
  S = str(input())
  
  if S=="ABC":
    print("ARC")
  elif S=="ARC":
    print("ABC")
  else:
    return

if __name__ == "__main__":
  run()

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

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

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

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

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

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

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

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

Solution (Python):
input = input()

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