def test_ack_1_0(): assert ackermann(1,0) == 2
def test_ack_3_2(): assert ackermann(3,2) == 29
def test_ack_0_0(): assert ackermann(0,0) == 1
def test_ack_1_2(): assert ackermann(1,2) == 4
def test_ack_2_2(): assert ackermann(2,2) == 7
def test_ack_3_1(): assert ackermann(3,1) == 13
def test_ack_0_2(): assert ackermann(0,2) == 3
def test_ack_2_1(): assert ackermann(2,1) == 5
def test_ack_1_1(): assert ackermann(1,1) == 3
def test_ack_0_1(): assert ackermann(0,1) == 2
def test_ack_4_0(): assert ackermann(2,0) == 13
def test_ack_3_0(): assert ackermann(2,0) == 5