while True:
    try:
        s=input()
        sum,i,k=0,0,1
        for i in s[:-1]:
            if i!="-":
                sum=sum+int(i)*k
                k+=1           
        sbm=sum % 11
        jym=s[-1]
        
        if sbm==10 and s[-1]!="X":
            print(s[:len(s)-1]+"X")
        elif sbm<10 and str(sbm)!=jym:
            print(s[:len(s)-1]+str(sbm))
        else:
            print("Right")
    except EOFError:
        break