From a3077a274cbb1eaa2f9817881008d85ae95d2201 Mon Sep 17 00:00:00 2001
From: oncsr <khj20006@naver.com>
Date: Thu, 7 Aug 2025 21:15:15 +0900
Subject: [PATCH] =?UTF-8?q?[20250807]=20BOJ=20/=20P4=20/=20=ED=80=B4?=
 =?UTF-8?q?=EC=A6=88=EC=87=BC=20/=20=EA=B6=8C=ED=98=81=EC=A4=80?=
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---
 ...4 \355\200\264\354\246\210\354\207\274.md" | 101 ++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 "khj20006/202508/07 BOJ P4 \355\200\264\354\246\210\354\207\274.md"

diff --git "a/khj20006/202508/07 BOJ P4 \355\200\264\354\246\210\354\207\274.md" "b/khj20006/202508/07 BOJ P4 \355\200\264\354\246\210\354\207\274.md"
new file mode 100644
index 00000000..0c7be9b5
--- /dev/null
+++ "b/khj20006/202508/07 BOJ P4 \355\200\264\354\246\210\354\207\274.md"	
@@ -0,0 +1,101 @@
+```java
+import java.util.*;
+import java.io.*;
+
+class IOController {
+	BufferedReader br;
+	BufferedWriter bw;
+	StringTokenizer st;
+
+	public IOController() {
+		br = new BufferedReader(new InputStreamReader(System.in));
+		bw = new BufferedWriter(new OutputStreamWriter(System.out));
+		st = new StringTokenizer("");
+	}
+
+	String nextLine() throws Exception {
+		String line = br.readLine();
+		st = new StringTokenizer(line);
+		return line;
+	}
+
+	String nextToken() throws Exception {
+		while (!st.hasMoreTokens()) nextLine();
+		return st.nextToken();
+	}
+
+	int nextInt() throws Exception {
+		return Integer.parseInt(nextToken());
+	}
+
+	long nextLong() throws Exception {
+		return Long.parseLong(nextToken());
+	}
+
+	double nextDouble() throws Exception {
+		return Double.parseDouble(nextToken());
+	}
+
+	void close() throws Exception {
+		bw.flush();
+		bw.close();
+	}
+
+	void write(String content) throws Exception {
+		bw.write(content);
+	}
+
+}
+
+public class Main {
+
+	static IOController io;
+
+	//
+
+	static final long INF = -(long)1e18 - 7;
+
+	static int N, M;
+	static long[] a, b;
+
+	public static void main(String[] args) throws Exception {
+
+		io = new IOController();
+
+		init();
+		solve();
+
+		io.close();
+
+	}
+
+	static void init() throws Exception {
+
+		N = io.nextInt();
+		M = io.nextInt();
+		a = new long[N+1];
+		for(int i=1;i<=N;i++) a[i] = a[i-1] + io.nextInt();
+		b = new long[N+1];
+		for(int i=1;i<=N;i++) b[i] = io.nextInt();
+
+	}
+
+	static void solve() throws Exception {
+
+		long[] success = new long[N+1];
+		long[] fail = new long[N+1];
+		long[] bonus = new long[N+1];
+		Arrays.fill(bonus, INF);
+
+		for(int i=1;i<=N;i++) {
+			success[i] = Math.max(bonus[i-1], Math.max(success[i-1], fail[i-1])) + a[i]-a[i-1];
+			fail[i] = Math.max(bonus[i-1], Math.max(success[i-1], fail[i-1])) - (a[i]-a[i-1]);
+			if(i >= M) bonus[i] = Math.max(fail[i-M], bonus[i-M]) + a[i]-a[i-M] + b[i];
+		}
+
+		io.write(Math.max(bonus[N], Math.max(success[N], fail[N])) + "\n");
+
+	}
+
+}
+```