diff --git a/H0ngJu/README.md b/H0ngJu/README.md
index ca2eabf0..35c4a92a 100644
--- a/H0ngJu/README.md
+++ b/H0ngJu/README.md
@@ -30,4 +30,5 @@
 | 26차시 | 2024.08.24 | 그리디 | [신입사원](https://www.acmicpc.net/problem/1946) | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/237 |
 | 27차시 | 2024.08.27 | DFS | [트리의 지름](https://www.acmicpc.net/problem/1967) | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/240 |
 | 28차시 | 2024.09.04 | 벨만포드 | [타임머신](https://www.acmicpc.net/problem/11657) | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/244 |
----
+| 29차시 | 2024.09.06 | 구현 | [톱니바퀴](https://www.acmicpc.net/problem/14891) | https://github.com/AlgoLeadMe/AlgoLeadMe-1/pull/245 |
+---
\ No newline at end of file
diff --git "a/H0ngJu/\352\265\254\355\230\204/\355\206\261\353\213\210\353\260\224\355\200\264.py" "b/H0ngJu/\352\265\254\355\230\204/\355\206\261\353\213\210\353\260\224\355\200\264.py"
new file mode 100644
index 00000000..00242881
--- /dev/null
+++ "b/H0ngJu/\352\265\254\355\230\204/\355\206\261\353\213\210\353\260\224\355\200\264.py"
@@ -0,0 +1,64 @@
+import sys
+
+def input() : return sys.stdin.readline().rstrip()
+
+wheels = [list(int(r) for r in input()) for _ in range(4)]
+score = 0
+
+K = int(input())
+cmds = [list(map(int, input().split())) for _ in range(K)]
+
+def leftshift(arr):
+    tmp = arr[0]
+    for i in range(len(arr)-1):
+        arr[i] = arr[i+1]
+    arr[-1] = tmp
+
+def rightshift(arr):
+    tmp = arr[-1]
+    for i in range(len(arr) - 1, 0, -1):
+        arr[i] = arr[i-1]
+    arr[0] = tmp
+        
+
+for n, cmd in cmds:
+    n -= 1
+    left_check = [False] * 4
+    right_check = [False] * 4
+
+    if cmd == 1:
+        right_check[n] = True
+    else:
+        left_check[n] = True
+
+    for i in range(n, 0, -1):
+        if wheels[i][6] != wheels[i-1][2]:
+            if left_check[i]:
+                right_check[i-1] = True
+            if right_check[i]:
+                left_check[i-1] = True
+        else:
+            break
+    
+    for i in range(n,3):
+        if wheels[i][2] != wheels[i+1][6]:
+            if left_check[i]:
+                right_check[i+1] = True
+            if right_check[i]:
+                left_check[i+1] = True
+        else:
+            break
+
+    for i in range(4):
+        if left_check[i]:
+            leftshift(wheels[i])
+        
+        if right_check[i]:
+            rightshift(wheels[i])
+    
+
+for i in range(4):
+    if wheels[i][0] == 1:
+        score += 2**i
+
+print(score)
\ No newline at end of file