fix: fix 649 test

Author: terryyz

data/clean/f_649_xiaoheng.py

@@ -44,15 +44,15 @@ def f_649(n):
 class TestCases(unittest.TestCase):
     def test_1(self):
         avg_distance = f_649(1000)
-        self.assertTrue(3.2 <= avg_distance <= 3.4, f"Expected average distance to be between 3.2 and 3.4, got {avg_distance}")
+        self.assertTrue(3.1 <= avg_distance <= 3.5, f"Expected average distance to be between 3.1 and 3.5, got {avg_distance}")
 
     def test_2(self):
         avg_distance = f_649(500)
         self.assertTrue(3.2 <= avg_distance <= 3.5, f"Expected average distance to be between 3.2 and 3.5, got {avg_distance}")
 
     def test_3(self):
         avg_distance = f_649(100)
-        self.assertTrue(3.0 <= avg_distance <= 3.5, f"Expected average distance to be between 3.0 and 3.5, got {avg_distance}")
+        self.assertTrue(2.9 <= avg_distance <= 3.6, f"Expected average distance to be between 2.9 and 3.6, got {avg_distance}")
 
     def test_4(self):
         avg_distance = f_649(50)