https://www.luogu.com.cn/problem/P1055

"""
P1055 [NOIP2008 普及组] ISBN 号码
https://www.luogu.com.cn/problem/P1055
"""

mod="0123456789X"

a=list(input())

#print(a)

t=0

j=1

for i in range(12):

            if a[i]=='-':
                        continue

            tmp=int(a[i])

            #print(tmp)
            
            t+=tmp*j

            j+=1
#print(t)


s=t%11

'''
print("s=%d"%s)

if s==10:
            x='X'
else:
            x=str(s)

'''
#print(mod[s])

if mod[s]==a[12]:
            print("Right")

else:
            a[12]=mod[s]
            #print(a)

            for k in (a):
                        print(k,end='')