def test_one(self):
n = 1
ar = [1]
result = 0
assert milk_merchant(n, ar) == result
def test_seven(self):
n = 15
ar = [6, 5, 2, 3, 5, 2, 2, 1, 1, 5, 1, 3, 3, 3, 5]
result = 6
assert milk_merchant(n, ar) == result
def test_zero(self):
assert milk_merchant(0, []) == 0
def test_six(self):
n = 10
ar = [1, 1, 3, 1, 2, 1, 3, 3, 3, 3]
result = 4
assert milk_merchant(n, ar) == result
def test_five(self):
n = 20
ar = [4, 5, 5, 5, 6, 6, 4, 1, 4, 4, 3, 6, 6, 3, 6, 1, 4, 5, 5, 5]
result = 9
assert milk_merchant(n, ar) == result
def test_four(self):
n = 9
ar = [10, 20, 20, 10, 10, 30, 50, 10, 20]
result = 3
assert milk_merchant(n, ar) == result
def test_three(self):
n = 2
ar = [2, 2]
result = 1
assert milk_merchant(n, ar) == result
def test_two(self):
n = 2
ar = [1, 2]
result = 0
assert milk_merchant(n, ar) == result
