From e1bb425d870337cc4b629d6a7090209505a96024 Mon Sep 17 00:00:00 2001
From: Ren Baoshuo <i@baoshuo.ren>
Date: Wed, 30 Dec 2020 18:25:28 +0800
Subject: [PATCH] =?UTF-8?q?AT2412=20[JOI=202007=20Final]=E6=9C=80=E5=A4=A7?=
 =?UTF-8?q?=E3=81=AE=E5=92=8C?=
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R44429693
---
 problem/AT2412/AT2412.cpp | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 problem/AT2412/AT2412.cpp

diff --git a/problem/AT2412/AT2412.cpp b/problem/AT2412/AT2412.cpp
new file mode 100644
index 00000000..1a1871af
--- /dev/null
+++ b/problem/AT2412/AT2412.cpp
@@ -0,0 +1,18 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int n, k, ans, a[100005], f[100005];
+
+int main() {
+    cin >> n >> k;
+    for (int i = 1; i <= n; i++) {
+        cin >> a[i];
+        f[i] = f[i - 1] + a[i];
+    }
+    for (int i = k; i <= n; i++) {
+        ans = max(ans, f[i] - f[i - k]);
+    }
+    cout << ans << endl;
+    return 0;
+}