diff --git a/AcWing/154/154.cpp b/AcWing/154/154.cpp
new file mode 100644
index 00000000..6c4471f3
--- /dev/null
+++ b/AcWing/154/154.cpp
@@ -0,0 +1,35 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int n, k, a[1000005];
+deque<int> q_min, q_max;
+vector<int> ans_min, ans_max;
+
+int main() {
+    cin >> n >> k;
+    for (int i = 1; i <= n; i++) {
+        cin >> a[i];
+    }
+    for (int i = 1; i <= n; i++) {
+        while (!q_max.empty() && a[q_max.back()] < a[i]) q_max.pop_back();
+        while (!q_min.empty() && a[q_min.back()] > a[i]) q_min.pop_back();
+        q_max.push_back(i);
+        q_min.push_back(i);
+        if (q_min.front() < i - k + 1) q_min.pop_front();
+        if (q_max.front() < i - k + 1) q_max.pop_front();
+        if (i >= k) {
+            ans_max.push_back(a[q_max.front()]);
+            ans_min.push_back(a[q_min.front()]);
+        }
+    }
+    for (int i = 0; i < ans_min.size(); i++) {
+        cout << ans_min[i] << ' ';
+    }
+    cout << endl;
+    for (int i = 0; i < ans_max.size(); i++) {
+        cout << ans_max[i] << ' ';
+    }
+    cout << endl;
+    return 0;
+}