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 in Python (3.8.2) (judge verdict: Runtime Error)

X=int(input())

Xkon=X**0.2
if(Xkon==int(Xkon)):
    print(str(0)+" "+str(int(-Xkon)))
    #break
else:
    m=-(10**2)
    while m<0:
        A=X+(m**5)
        check=(A**0.2)
        # print(type(check))
        if(type(check)!=complex):
            if(check==int(check)):
                AnsA=-check
                AnsB=-m
                print(str(int(AnsB))+" "+str(int(AnsA)))
                break
            else:
                pass
        else:
            m=m+1
    n=1
    while n<10**2:
        A=X+(n**5)
        check=(A**0.2)
        if(check==int(check)):
            AnsA=check
            AnsB=n
            print(str(int(AnsB)+" "+str(int(-AnsA))))
            break
        else:
            n=n+1