diff --git a/threeSumClosest.py b/threeSumClosest.py
new file mode 100644
index 0000000..05e6685
--- /dev/null
+++ b/threeSumClosest.py
@@ -0,0 +1,30 @@
+def threeSumClosest(self, nums: List[int], target: int) -> int:
+        nums.sort()
+        l, ans, diff = len(nums), 1e18, 1e18
+        for i in range(l - 2):
+            if i > 0 and nums[i] == nums[i - 1]:
+                continue
+            left, right = i + 1, l - 1
+            while right - left > 15:
+                mid = (left + right) // 2
+                s = nums[left] + nums[right] + nums[i]
+                if s == target:
+                    break
+                elif s > target:
+                    right = mid
+                else:
+                    left = mid
+            while right - left > 1:
+                s = nums[left] + nums[right] + nums[i]
+                if s == target:
+                    break
+                elif s > target:
+                    right -= 1
+                else:
+                    left += 1
+            tt = nums[i] + nums[left] + nums[right]
+            t = abs(target - tt)
+            if diff > t:
+                ans = tt
+                diff = t
+        return ans