diff --git a/kjs254/README.md b/kjs254/README.md
index 620af80..4f94749 100644
--- a/kjs254/README.md
+++ b/kjs254/README.md
@@ -5,4 +5,6 @@
 | 1차시 | 2024.02.12 |  스택  | [기능개발](https://school.programmers.co.kr/learn/courses/30/lessons/42586)  | [#2](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/2) |
 | 2차시 | 2024.02.15 | 큐 | [프로세스](https://school.programmers.co.kr/learn/courses/30/lessons/42587) | [#6](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/6) |
 | 3차시 | 2024.02.15 | 힙 | [야근 지수](https://school.programmers.co.kr/learn/courses/30/lessons/12927) | [#10](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/10) |
+| 4차시 | 2024.02.15 | 그리디 | [구명보트](https://school.programmers.co.kr/learn/courses/30/lessons/42885) | [#13](https://github.com/AlgoLeadMe/AlgoLeadMe-7/pull/13) |
+
 ---
diff --git "a/kjs254/\352\267\270\353\246\254\353\224\224/\352\265\254\353\252\205\353\263\264\355\212\270.py" "b/kjs254/\352\267\270\353\246\254\353\224\224/\352\265\254\353\252\205\353\263\264\355\212\270.py"
new file mode 100644
index 0000000..4e9f3ff
--- /dev/null
+++ "b/kjs254/\352\267\270\353\246\254\353\224\224/\352\265\254\353\252\205\353\263\264\355\212\270.py"
@@ -0,0 +1,16 @@
+from collections import deque
+
+def solution(people, limit):
+    answer = 0
+    people = deque(sorted(people))
+    
+    while len(people)>1:
+        if people[0]+people[-1]<=limit:
+            people.pop()
+            people.popleft()
+            answer+=1
+        else:
+            people.pop()
+            answer+=1
+        
+    return answer+1 if people else answer
\ No newline at end of file