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

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

Solution (Python):
def main():
    contest_last_week = input()

    abc, arc = ('ABC', 'ARC')
    
    contest_this_week = abc if contest_last_week == arc else arc
    
    print(contest_this_week)


if __name__ == "__main__":
    main()

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

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

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

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

a = ''

if s == 'ABC':
    a = 'ARC'
elif s == 'ARC':
    a = 'ABC'

print(a)

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

Solution (Python):
data = input()

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

Solution (Python):
str1=input()
if(str1=="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):
name = str(input())
if name == '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):
contest = str(input())
 
if contest == "ABC":
  print("ARC")
else:
  print("ABC")

Solution (Python):
import math
import numpy as np
import itertools

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

Solution (Python):
S = input()

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

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

Solution (Python):
def actual(s):
    if s == 'ABC':
        return 'ARC'

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

s = input()
print(actual(s))

Solution (Python):
A = input()
if A == "ARC":
  print("ABC")
elif A == "ABC":
  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):
def this_week_atcoder(S):
    if(S == "ABC"):
        print("ARC")
    elif(S == "ARC"):
        print("ABC")

this_week_atcoder(input())

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

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

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

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

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

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

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

Solution (Python):
s = input().strip()

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

Solution (Python):


from typing import Iterable


def main() -> None:
    s = r()
    if s == 'ABC':
        w('ARC')
    else:
        w('ABC')


def r() -> str:
    return input().strip()


def ri() -> int:
    return int(input())


def rmi(delim: str = ' ') -> int:
    return tuple(map(int, input().split(delim)))


def w(data) -> None:
    print(data)


def wm(data: Iterable) -> None:
    print(' '.join(data))


if __name__ == '__main__':
    main()

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):
abc = 'ABC'
arc = 'ARC'

in_str = input()

if in_str == abc:
  print(arc)
elif in_str == arc:
  print(abc)
else :
  print("error")

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

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

Solution (Python):
def main():
    contest_last_week = input()
    
    abc, arc = ('ABC', 'ARC')
    
    if contest_last_week == abc:
        contest_this_week = arc
    else:
        contest_this_week = abc
        
    print(contest_this_week)


if __name__ == "__main__":
    main()

Solution (Python):
print('ARC' if input() == 'ABC' else '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):
pre = input()
if pre == "ARC":
  print("ABC")
elif pre == "ABC":
  print("ARC")
else:
  assert(0)

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

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):
def hantei(X):
    if X == 'R':
        return 'ABC'
    else:
        return 'ARC'
      
A, X, C = input()

out = hantei(X)
print(out)

Solution (Python):
S=input()

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

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

Solution (Python):
S1 = 'ABC'
S2 = 'ARC'

S = input()

if S == S1:
    print(S2)
else:
    print(S1)

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):
n=input()

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

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

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

Solution (Python):
import sys
int1 = lambda x: int(x) - 1
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
sys.setrecursionlimit(500000)

S = read().decode().rstrip()

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

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

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

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

Solution (Python):
import os
import sys
from io import BytesIO, IOBase


def solution():
    pass


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




BUFSIZE = 8192


class FastIO(IOBase):
    newlines = 0

    def __init__(self, file):
        self._fd = file.fileno()
        self.buffer = BytesIO()
        self.writable = "x" in file.mode or "r" not in file.mode
        self.write = self.buffer.write if self.writable else None

    def read(self):
        while True:
            b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
            if not b:
                break
            ptr = self.buffer.tell()
            self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
        self.newlines = 0
        return self.buffer.read()

    def readline(self):
        while self.newlines == 0:
            b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
            self.newlines = b.count(b"\n") + (not b)
            ptr = self.buffer.tell()
            self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
        self.newlines -= 1
        return self.buffer.readline()

    def flush(self):
        if self.writable:
            os.write(self._fd, self.buffer.getvalue())
            self.buffer.truncate(0), self.buffer.seek(0)


class IOWrapper(IOBase):
    def __init__(self, file):
        self.buffer = FastIO(file)
        self.flush = self.buffer.flush
        self.writable = self.buffer.writable
        self.write = lambda s: self.buffer.write(s.encode("ascii"))
        self.read = lambda: self.buffer.read().decode("ascii")
        self.readline = lambda: self.buffer.readline().decode("ascii")


sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)


def input():
    return sys.stdin.readline().rstrip("\r\n")


def write(*args, end='\n'):
    for x in args[:-1]:
        sys.stdout.write(str(x) + ' ')
    sys.stdout.write(str(args[-1]))
    sys.stdout.write(end)


def r_array():
    return [int(x) for x in input().split()]


def r_int():
    return int(input())


if __name__ == "__main__":
    main()

Solution (Python):
s = input()

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Solution (Python):
str = input()
if str == 'ABC':
  print(str.replace('B','R'))
else:
  print(str.replace('R','B'))

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

Solution (Python):
from numba import jit

@jit(nopython=True)
def f():
    return 1
f()

s = input()
print("ARC" if s == "ABC" else "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):
from sys import stdin, stdout
rl = lambda: stdin.readline()
rll = lambda: stdin.readline().split()

def main():
	last = rll()[0]
	if last == "ABC":
		stdout.write("ARC");stdout.write("\n")
	else:
		stdout.write("ABC");stdout.write("\n")
	stdout.close()

if __name__ == "__main__":
	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):
import math
import sys

a = input()

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

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

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

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

Solution (Python):
instr = input()

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

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

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

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 = str(input())

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

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

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

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

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

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

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

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

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, X, C = input()
print('A' + 'BR'[X == 'B'] + 'C')

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

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

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

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()

if s == "ABC":
    print("ARC")
elif s == "ARC":
    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()
d = {"ABC":"ARC", "ARC":"ABC"}
print(d[s])

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

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

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

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

Solution (Python):
from sys import setrecursionlimit, exit
setrecursionlimit(1000000000)

def main():
    print((s := input())[0] + chr(ord(s[1]) ^ ord('B') ^ ord('R')) + s[2])

main()

Solution (Python):
import sys
input=sys.stdin.readline
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({"ABC": "ARC", "ARC": "ABC"}[input()])

Solution (Python):
last_week = input()

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

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

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

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

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

Solution (Python):
if input()=="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 == "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):
lastweek = input()

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

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

Solution (Python):
str = input()



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

Solution (Python):
S = input()

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

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

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

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

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

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


if __name__ == '__main__':
    solve()

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


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

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

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")
elif N == "ARC" :
  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):
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[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 == "ARC":
    print("ABC")
else:
    print("ARC")

Solution (Python):

S=input()
print("ARC") if S[1] == "B" 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')
elif s == 'ARC':
  print('ABC')

Solution (Python):


from fractions import gcd
from collections import Counter, deque, defaultdict
from heapq import heappush, heappop, heappushpop, heapify, heapreplace, merge
from bisect import bisect_left, bisect_right, bisect, insort_left, insort_right, insort
from itertools import accumulate, product, permutations, combinations, combinations_with_replacement

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

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

Solution (Python):
if __name__ == "__main__":
  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):
from sys import stdin
S = stdin.readline().rstrip()
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):
x=input()
if x=="ABC":
    print("ARC")
else:
    print("ABC")

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

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

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

Solution (Python):


import sys


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


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):


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


main()

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

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

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()
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):
def q1():
    S = input()
    if S == 'ABC':
        print('ARC')
    else:
        print('ABC')


if __name__ == '__main__':
    q1()

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

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

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

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","ARC"][input()=="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":
  ans = "ARC"
else:
  ans = "ABC"
  
print(ans)

Solution (Python):


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

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

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

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

Solution (Python):




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


if __name__ == "__main__":
    main()

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=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):
contest= input()

if contest[1]=='B':
	print("ARC")
elif contest[1]=='R':
	print("ABC")