def test_valid():
assert valid((1,2,3,4))
assert not valid((1,1,2,3))
assert not valid((1,2,3))
assert not valid((0,2,3,4))
assert not valid((1,3,4,5,6))
assert not valid((1,2,2,3,4))
def human_game():
exact = random_hand()
while True:
in_ = raw_input()
if in_=='end':
print 'not valid'
continue
guess = [int(l) for l in in_ if l.isdigit()]
if not valid(guess):
print 'not valid'
continue
result = evaluate(guess, exact)
if result==(4, 0):
print 'right!', exact
return
print result
