diff --git a/dohyeondol1/README.md b/dohyeondol1/README.md
index 586986f..ecae6d3 100644
--- a/dohyeondol1/README.md
+++ b/dohyeondol1/README.md
@@ -9,4 +9,4 @@
  | 5차시 | 2025.04.02 |  DFS & BFS  | [DFS와 BFS](https://www.acmicpc.net/problem/1260)|https://github.com/AlgoLeadMe/AlgoLeadMe-13/pull/18|
  | 6차시 | 2025.04.05 |  DP  | [평범한 배낭](https://www.acmicpc.net/problem/12865)|https://github.com/AlgoLeadMe/AlgoLeadMe-13/pull/22|
  | 7차시 | 2025.04.08 |  트리  | [트리 순회](https://www.acmicpc.net/problem/1991)|https://github.com/AlgoLeadMe/AlgoLeadMe-13/pull/26|
- ---
\ No newline at end of file
+ | 8차시 | 2025.04.11 |  덱  | [회전하는 큐](https://www.acmicpc.net/problem/1021)|https://github.com/AlgoLeadMe/AlgoLeadMe-13/pull/32|
diff --git "a/dohyeondol1/\353\215\261/8-dohyeondol1.cpp" "b/dohyeondol1/\353\215\261/8-dohyeondol1.cpp"
new file mode 100644
index 0000000..3602bfd
--- /dev/null
+++ "b/dohyeondol1/\353\215\261/8-dohyeondol1.cpp"
@@ -0,0 +1,42 @@
+#include <iostream>
+#include <vector>
+#include <deque>
+#include <algorithm>
+using namespace std;
+
+int main() {
+    cin.tie(0)->sync_with_stdio(0);
+    int N, M;
+    cin >> N >> M;
+
+    deque<int> dq;
+    for(int i = 1; i <= N; i++) 
+        dq.push_back(i);
+    
+    vector<int> target(M);
+    for(int i = 0; i < M; i++) 
+        cin >> target[i];
+
+    int count = 0;
+    for(int i = 0; i < M; i++) {
+        int index = find(dq.begin(), dq.end(), target[i]) - dq.begin();
+
+        if(index <= dq.size()/2) {
+            while(index--) {
+                dq.push_back(dq.front());
+                dq.pop_front();
+                count++;
+            }
+        } else{
+            int step = dq.size() - index;
+            while(step--) {
+                dq.push_front(dq.back());
+                dq.pop_back();
+                count++;
+            }
+        }
+        dq.pop_front();
+    }
+
+    cout << count << '\n';
+}
\ No newline at end of file