s = input()
first = False
if len(s) > 7 and len(set(s)) > 3:
    first = True
second = False
w = 'qwertyuiopasdfghjklzxcvbnm'
for i in w:
    if i in s:
        second = True
        break
w = w.upper()
third = False
for i in w:
    if i in s:
        third = True
        break
r = False
for i in range(10):
    if str(i) in s:
        r = True
        break
last = True
s = s.lower()
if s.find('anna') != -1:
    last = False
if first and second and third and last and r:
    print('strong')
else:
    print('weak')