diff --git "a/leetcode3/\354\265\234\353\257\274\354\247\200/3471.py" "b/leetcode3/\354\265\234\353\257\274\354\247\200/3471.py"
new file mode 100644
index 00000000..1546cbad
--- /dev/null
+++ "b/leetcode3/\354\265\234\353\257\274\354\247\200/3471.py"
@@ -0,0 +1,15 @@
+class Solution:
+    def largestInteger(self, nums: List[int], k: int) -> int:
+        result = []
+        for i in nums:
+            count = 0
+            for j in range(len(nums)-k+1):
+                sub = nums[j:j+k]
+                if i in sub:
+                    count += 1
+            if count == 1:
+                result.append(i)
+            result.sort()
+        if result: 
+            return result[-1]
+        return -1