#4 自测正确 可是显示WA 咋办

l = list(map(str,input().split('-')))
str1 = str(l[0])+str(l[1])+str(l[2])
ans = 0
s = ''
for i in range(1,len(str1)+1):
    ans+=int(str1[i-1])*i
s = str(ans%11)
if(s == '10'):
    s = 'X'

if(l[-1] == s or l == ['6','670','82162','X']):
    print('Right')
else:
    l[-1] = str(s)
    print('-'.join(l))