diff --git a/fnzksxl/README.md b/fnzksxl/README.md
index a1ad866..318734c 100644
--- a/fnzksxl/README.md
+++ b/fnzksxl/README.md
@@ -12,4 +12,5 @@
 | 8차시 | 2024-02-20 | DP | [동전1](https://www.acmicpc.net/problem/2293) | [#32](https://github.com/AlgoLeadMe/AlgoLeadMe-6/pull/32) |
 | 9차시 | 2024-02-23 | 그래프 | [순위](https://school.programmers.co.kr/learn/courses/30/lessons/49191) | [#37](https://github.com/AlgoLeadMe/AlgoLeadMe-6/pull/37) |
 | 10차시 | 2024-03-07 | 구현 | [나무 재테크](https://www.acmicpc.net/problem/16235) | [#52](https://github.com/AlgoLeadMe/AlgoLeadMe-6/pull/52) |
+| 11차시 | 2024-03-10 | 투포인터 | [보석 쇼핑](https://school.programmers.co.kr/learn/courses/30/lessons/67258) | [#56](https://github.com/AlgoLeadMe/AlgoLeadMe-6/pull/56) |
 ---
diff --git "a/fnzksxl/\355\210\254\355\217\254\354\235\270\355\204\260/\353\263\264\354\204\235 \354\207\274\355\225\221.py" "b/fnzksxl/\355\210\254\355\217\254\354\235\270\355\204\260/\353\263\264\354\204\235 \354\207\274\355\225\221.py"
new file mode 100644
index 0000000..7e4729c
--- /dev/null
+++ "b/fnzksxl/\355\210\254\355\217\254\354\235\270\355\204\260/\353\263\264\354\204\235 \354\207\274\355\225\221.py"	
@@ -0,0 +1,26 @@
+def solution(gems):
+    answer = []
+    head, tail = 0, 0
+    gem_length = len(set(gems))
+    gems_dict = {}
+    gem_min = len(gems) + 1
+    
+    while head <= tail < len(gems):
+        gems_dict[gems[tail]] = gems_dict.get(gems[tail], 0) + 1
+        tail+=1
+    
+        if len(gems_dict) == gem_length:
+            while head < tail:
+                if gems_dict[gems[head]] > 1:
+                    gems_dict[gems[head]] -= 1
+                    head += 1
+                
+                elif gem_min > tail - head:
+                    gem_min = tail - head
+                    answer = [head+1, tail]
+                    break
+                    
+                else:
+                    break
+        
+    return answer
\ No newline at end of file