import unittest
class X(unittest.TestCase):

    def test1(self):
        self.assertEqual()

    def test2(self):
        self.assertEqual()

    def test3(self):
        self.assertEqual()

    def test4(self):
        self.assertEqual()

    def test5(self):
        self.assertEqual()

    def test6(self):
        self.assertEqual()

    def test7(self):
        self.assertEqual()

    def test8(self):
        self.assertEqual()

    def test9(self):
        self.assertEqual()

    def test10(self):
        self.assertEqual()

    def test11(self):
        self.assertEqual()

    def test12(self):
        self.assertEqual()

    def test13(self):
        self.assertEqual()

    def test14(self):
        self.assertEqual()

    def test15(self):
        self.assertEqual()

    def test16(self):
        self.assertEqual()

    def test17(self):
        self.assertEqual()

    def test18(self):
        self.assertEqual()