a = input().split('-')

b = int(a[0] + a[1] + a[2])

i = 0 s = {} sum_ = 0 for i in range(9): s[i] = (b//(10**(8-i))) % 10 s[i] = s[i] * (i + 1) sum_ = sum_ + s[i]

c = int(sum_ % 11)

if (c == 10): ID = 'X' else: ID = str(c)

if (ID == a[3]): print('Right') else: print(a[0] + '-' + a[1] + '-' + a[2] + '-' + ID)