num = input()
l = []
for n in num:
    if '0' <= n <= '9':
        l.append(int(n))
    elif n == 'X':
        l.append(n)
s = 0
for i in range(9):
    s += l[i] * (i+1)
y = s % 11
if y == l[-1] or (y == 10 and l[-1] == 'X'):
    print('Right')
else:
    if y == 10:
        r = 'X'
    else:
        r = str(y)
    print(num[:-1]+r)