diff --git a/suhyun113/README.md b/suhyun113/README.md
index d79604f..c74169e 100644
--- a/suhyun113/README.md
+++ b/suhyun113/README.md
@@ -6,4 +6,5 @@
 | 2차시 | 2024.03.29 |  수학  | [소수 & 팰린드롬](https://www.acmicpc.net/problem/1747)  | [#9](https://github.com/AlgoLeadMe/AlgoLeadMe-10/pull/9) |
 | 3차시 | 2024.04.02 |  그리디  | [거스름돈](https://www.acmicpc.net/problem/14916)  | [#12](https://github.com/AlgoLeadMe/AlgoLeadMe-10/pull/12) |
 | 4차시 | 2024.04.06 |  DP  | [피보나치 수 5](https://www.acmicpc.net/problem/10870)  | [#16](https://github.com/AlgoLeadMe/AlgoLeadMe-10/pull/16) |
-| 5차시 | 2024.04.10 |  스택  | [크레인 인형 뽑기 게임](https://school.programmers.co.kr/learn/courses/30/lessons/64061)  | [#19](https://github.com/AlgoLeadMe/AlgoLeadMe-10/pull/19) |
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+| 5차시 | 2024.04.10 |  스택  | [크레인 인형 뽑기 게임](https://school.programmers.co.kr/learn/courses/30/lessons/64061)  | [#19](https://github.com/AlgoLeadMe/AlgoLeadMe-10/pull/19) |
+| 6차시 | 2024.04.14 |  스택  | [컨트롤 제트](https://school.programmers.co.kr/learn/courses/30/lessons/120853)  | [#21](https://github.com/AlgoLeadMe/AlgoLeadMe-10/pull/21) |
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diff --git "a/suhyun113/\354\212\244\355\203\235/6-suhyun113.py" "b/suhyun113/\354\212\244\355\203\235/6-suhyun113.py"
new file mode 100644
index 0000000..6018767
--- /dev/null
+++ "b/suhyun113/\354\212\244\355\203\235/6-suhyun113.py"
@@ -0,0 +1,20 @@
+def solution(s):
+    answer = 0
+    
+    stack = [float("inf")]
+    
+    # 문자열을 공백 기준으로 나누어 리스트에 저장
+    s_list = s.split()
+    
+    for i in s_list: # i는 s_list의 인덱스가 아닌 값 
+        if i != 'Z':
+            stack.append(i)
+        else:
+            stack.pop()  #  stack의 가장 위의 값 빼기
+    stack.pop(0)
+    
+    # 문자를 정수로 변환하기
+    for i in stack:
+        n = int(i)
+        answer += n
+    return answer
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