BaekJoon | 안밖? 밖안? 계단? 역계단?.py

S = input()

if S == 'fdsajkl;' or S == 'jkl;fdsa':
    print('in-out')
elif S == 'asdf;lkj' or S == ';lkjasdf':
    print('out-in')
elif S == 'asdfjkl;':
    print('stairs')
elif S == ';lkjfdsa':
    print('reverse')
else:
    print('molu')