diff --git a/kjs254/README.md b/kjs254/README.md
index d8df057..620af80 100644
--- a/kjs254/README.md
+++ b/kjs254/README.md
@@ -4,4 +4,5 @@
 |:----:|:---------:|:----:|:-----:|:----:|
 | 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) |
 ---
diff --git "a/kjs254/\355\201\220/2-kjs254" "b/kjs254/\355\201\220/\355\224\204\353\241\234\354\204\270\354\212\244.py"
similarity index 100%
rename from "kjs254/\355\201\220/2-kjs254"
rename to "kjs254/\355\201\220/\355\224\204\353\241\234\354\204\270\354\212\244.py"
diff --git "a/kjs254/\355\236\231/\354\225\274\352\267\274 \354\247\200\354\210\230.py" "b/kjs254/\355\236\231/\354\225\274\352\267\274 \354\247\200\354\210\230.py"
new file mode 100644
index 0000000..74c1573
--- /dev/null
+++ "b/kjs254/\355\236\231/\354\225\274\352\267\274 \354\247\200\354\210\230.py"	
@@ -0,0 +1,16 @@
+import heapq
+def solution(n, works):
+    max_heap = []
+    for w in works:
+        heapq.heappush(max_heap, (-w,w))
+    
+    for i in range(n):
+        max_work = heapq.heappop(max_heap)[1]-1
+        if max_work<0:
+            return 0
+        
+        heapq.heappush(max_heap,(-max_work,max_work))
+        
+    print(max_heap)
+    answer = sum([x[1]**2 for x in max_heap])
+    return answer
\ No newline at end of file