n,m=input(),[]
for i in n:
    if i!="-":
        if i=="X":
            m.append(10)
        else:
            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)