n,m=input(),[]
ls=[str(i) for i in range(10)]
for i in n:
    if i=="X":
        m.append(10)
    elif i in ls:
        m.append(int(i))
x=0
for i in range(9):
    x+=(i+1)*m[i]
x%=11
if x==m[-1]:
    print("Right")
else:
    n=n[:-1]
    if x==10:
        n+="X"
    else:
        n+=str(x)
    print(n)