From 6e77b36ff09e444dc96e9f44f392293ecb668e2d Mon Sep 17 00:00:00 2001
From: JHLEE325 <82587652+JHLEE325@users.noreply.github.com>
Date: Fri, 30 Jan 2026 17:13:26 +0900
Subject: [PATCH] =?UTF-8?q?[20260130]=20BOJ=20/=20G3=20/=20=EC=86=8C?=
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---
 ...25\352\270\260\352\264\200\354\260\250.md" | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 "JHLEE325/202601/30 BOJ G3 \354\206\214\355\230\225\352\270\260\352\264\200\354\260\250.md"

diff --git "a/JHLEE325/202601/30 BOJ G3 \354\206\214\355\230\225\352\270\260\352\264\200\354\260\250.md" "b/JHLEE325/202601/30 BOJ G3 \354\206\214\355\230\225\352\270\260\352\264\200\354\260\250.md"
new file mode 100644
index 00000000..7657cc83
--- /dev/null
+++ "b/JHLEE325/202601/30 BOJ G3 \354\206\214\355\230\225\352\270\260\352\264\200\354\260\250.md"	
@@ -0,0 +1,35 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st;
+
+        int N = Integer.parseInt(br.readLine());
+
+        int[] train = new int[N + 1];
+        int[] sum = new int[N + 1];
+
+        st = new StringTokenizer(br.readLine());
+        for (int i = 1; i <= N; i++) {
+            train[i] = Integer.parseInt(st.nextToken());
+            sum[i] = sum[i - 1] + train[i];
+        }
+
+        int K = Integer.parseInt(br.readLine());
+
+        int[][] dp = new int[4][N + 1];
+
+        for (int i = 1; i <= 3; i++) {
+            for (int j = i * K; j <= N; j++) {
+                dp[i][j] = Math.max(dp[i][j - 1], dp[i - 1][j - K] + (sum[j] - sum[j - K]));
+            }
+        }
+
+        System.out.println(dp[3][N]);
+    }
+}
+```