diff --git a/binary-tree-level-order-traversal/shinsj4653.py b/binary-tree-level-order-traversal/shinsj4653.py
new file mode 100644
index 000000000..f2dd9f373
--- /dev/null
+++ b/binary-tree-level-order-traversal/shinsj4653.py
@@ -0,0 +1,15 @@
+"""
+[문제풀이]
+# Inputs
+
+# Outputs
+
+# Constraints
+
+# Ideas
+
+[회고]
+
+"""
+
+
diff --git a/counting-bits/shinsj4653.py b/counting-bits/shinsj4653.py
new file mode 100644
index 000000000..85277efa7
--- /dev/null
+++ b/counting-bits/shinsj4653.py
@@ -0,0 +1,52 @@
+"""
+[문제풀이]
+# Inputs
+n: int
+# Outputs
+
+ans: arr
+길이: n + 1
+
+ans내 각 원소들 : ans[i]: i의 이진법에서 1의 개수
+
+# Constraints
+0 <= n <= 10^5
+
+# Ideas
+2중 for문 이면 안됨
+
+[회고]
+dp를 활용한 풀이도 같이 알아두자
+"""
+
+# 내 풀이
+class Solution:
+    def countBits(self, n: int) -> List[int]:
+
+        ans = []
+
+        for i in range(n + 1):
+            if i == 0 or i == 1:
+                ans.append(i)
+                continue
+
+            num = i
+            cnt = 0
+            while num > 0:
+                num, n = num // 2, num % 2
+                if n == 1:
+                    cnt += 1
+
+            ans.append(cnt)
+
+        return ans
+
+# 해설
+class Solution:
+    def countBits(self, n: int) -> List[int]:
+        dp = [0] * (n + 1)
+        for num in range(1, n + 1):
+            dp[num] = dp[num // 2] + (num % 2)
+        return dp
+
+
diff --git a/house-robber-ii/shinsj4653.py b/house-robber-ii/shinsj4653.py
new file mode 100644
index 000000000..f2dd9f373
--- /dev/null
+++ b/house-robber-ii/shinsj4653.py
@@ -0,0 +1,15 @@
+"""
+[문제풀이]
+# Inputs
+
+# Outputs
+
+# Constraints
+
+# Ideas
+
+[회고]
+
+"""
+
+
diff --git a/meeting-rooms-ii/shinsj4653.py b/meeting-rooms-ii/shinsj4653.py
new file mode 100644
index 000000000..f2dd9f373
--- /dev/null
+++ b/meeting-rooms-ii/shinsj4653.py
@@ -0,0 +1,15 @@
+"""
+[문제풀이]
+# Inputs
+
+# Outputs
+
+# Constraints
+
+# Ideas
+
+[회고]
+
+"""
+
+
diff --git a/word-search-ii/shinsj4653.py b/word-search-ii/shinsj4653.py
new file mode 100644
index 000000000..f2dd9f373
--- /dev/null
+++ b/word-search-ii/shinsj4653.py
@@ -0,0 +1,15 @@
+"""
+[문제풀이]
+# Inputs
+
+# Outputs
+
+# Constraints
+
+# Ideas
+
+[회고]
+
+"""
+
+