s = input()
def func(s):
    if len(s) <= 8:
        return False
    count = 0
    buf = 'qwertyuiopasdfghjklzxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM123456789'
    for i in s:
        if i in buf:
            count += 1
    if count != len(s):
        return False
    return True
if func(s):
    print("YES")
else:
    print("NO")