a=input()
m=''
s=0
for i in a:
    if not i=='-':
        m+=i
for j in range(9):
    s+=int(m[j])*(j+1)
y=str(s%11)
if y=='10':
    y='X'
if m[-1]==y:
    print('Right')
else:
    print(a[0:-1]+y)