From 88667928c45fa3211e1e04fad1802c16b7691a39 Mon Sep 17 00:00:00 2001
From: Ren Baoshuo <i@baoshuo.ren>
Date: Sun, 12 Sep 2021 18:17:37 +0800
Subject: [PATCH] =?UTF-8?q?154.=20=E6=BB=91=E5=8A=A8=E7=AA=97=E5=8F=A3?=
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https://www.acwing.com/problem/content/submission/code_detail/7685858/
---
 AcWing/154/154.cpp | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 AcWing/154/154.cpp

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;
+}