diff --git a/LeetCode/0319_BulbSwitcher.py b/LeetCode/0319_BulbSwitcher.py
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+# The bulbs that will be turned on in the end will be the ones that are perfect squares.
+# So we just have to find the perfect square less than n; Square root of which will be the answer.
+# Contributed by: Sahil Bairagi
+
+class Solution:
+    def bulbSwitch(self, n: int) -> int:
+        return int(n**(0.5))