def main():
# Set level from DEBUG, INFO, WARNING. ERROR, CRITICAL
logging.basicConfig(level=logging.INFO)
seq = [5, 9, 8, 2, 1]
expected = '6'
# print answer(seq)
seq = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
expected = '1'
# print answer(seq)
seq = [10, 8, 15, 6, 9, 4, 5]
expected = '24'
# print answer(seq)
seq = [12, 6, 19, 15, 5]
expected = '6'
# print answer(seq)
seq = [44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64]
expected = '1'
# print answer(seq)
seq = [5, 9, 8, 2, 1, 10, 3]
expected = '1'
print(answer(seq))
def testcase_001(self):
seq = [5, 9, 8, 2, 1]
expected = '6'
self.assertEqual(answer(seq), expected)
def testcase_008(self):
seq = [44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64]
expected = '1'
self.assertEqual(answer(seq), expected)
def testcase_007(self):
seq = [12, 6, 19, 15, 5]
expected = '6'
self.assertEqual(answer(seq), expected)
def testcase_006(self):
seq = [10, 8, 15, 6, 9, 4, 5]
expected = '24'
self.assertEqual(answer(seq), expected)
def testcase_005(self):
seq = [5, 9, 8, 2, 1, 10, 3]
expected = '80'
self.assertEqual(answer(seq), expected)
def testcase_004(self):
seq = [5, 9]
expected = '1'
self.assertEqual(answer(seq), expected)
def testcase_002(self):
seq = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
expected = '1'
self.assertEqual(answer(seq), expected)