diff --git "a/leetcode3/\354\265\234\354\233\220\354\244\200/3774. Absolute Difference Between Maximum and Minimum K Elements.py" "b/leetcode3/\354\265\234\354\233\220\354\244\200/3774. Absolute Difference Between Maximum and Minimum K Elements.py"
new file mode 100644
index 00000000..a5b970e1
--- /dev/null
+++ "b/leetcode3/\354\265\234\354\233\220\354\244\200/3774. Absolute Difference Between Maximum and Minimum K Elements.py"	
@@ -0,0 +1,8 @@
+class Solution:
+    def absDifference(self, nums: List[int], k: int) -> int:
+        nums.sort()
+        n = len(nums)
+        ans = 0
+        for i in range(k):
+            ans += nums[n-i-1] - nums[i]
+        return ans
diff --git "a/leetcode3/\354\265\234\354\233\220\354\244\200/870. Advantage Shuffle.py" "b/leetcode3/\354\265\234\354\233\220\354\244\200/870. Advantage Shuffle.py"
new file mode 100644
index 00000000..46c3a2f0
--- /dev/null
+++ "b/leetcode3/\354\265\234\354\233\220\354\244\200/870. Advantage Shuffle.py"	
@@ -0,0 +1,28 @@
+class Solution:
+    def advantageCount(self, nums1: List[int], nums2: List[int]) -> List[int]:
+        def get_sorted_queue(nums):
+            num = [[nums[i], i] for i in range(len(nums))]
+            num.sort()
+            return deque(num)
+
+        queue1 = get_sorted_queue(nums1)
+        queue2 = get_sorted_queue(nums2)
+        ans = [0] * len(nums1)
+
+        while queue1 and queue2:
+            biggest1, _ = queue1[-1]
+            smallest1, _ = queue1[0]
+
+            biggest2, index1 = queue2[-1]
+            smallest2, index2 = queue2[0]
+
+            if biggest1 > biggest2:
+                biggest1, _ = queue1.pop()
+                biggest2, index1 = queue2.pop()
+                ans[index1] = biggest1
+            else:
+                smallest1, _ = queue1.popleft()
+                biggest2, index2 = queue2.pop()
+                ans[index2] = smallest1
+        
+        return ans