From 408c4467052328119e9ce2a8f465e3c4cd4746b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=EA=B0=95=EC=8B=A0=EC=A7=80?=
 <101992179+ksinji@users.noreply.github.com>
Date: Mon, 20 Oct 2025 22:37:09 +0900
Subject: [PATCH] =?UTF-8?q?[20251020]=20PGM=20/=20LV2=20/=20=EB=95=85?=
 =?UTF-8?q?=EB=94=B0=EB=A8=B9=EA=B8=B0=20/=20=EA=B0=95=EC=8B=A0=EC=A7=80?=
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---
 ...\205\353\224\260\353\250\271\352\270\260.md" | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 "ksinji/202510/20 PGM \353\225\205\353\224\260\353\250\271\352\270\260.md"

diff --git "a/ksinji/202510/20 PGM \353\225\205\353\224\260\353\250\271\352\270\260.md" "b/ksinji/202510/20 PGM \353\225\205\353\224\260\353\250\271\352\270\260.md"
new file mode 100644
index 00000000..ca1f5c43
--- /dev/null
+++ "b/ksinji/202510/20 PGM \353\225\205\353\224\260\353\250\271\352\270\260.md"	
@@ -0,0 +1,17 @@
+```java
+class Solution {
+    public int solution(int[][] land) {
+        int n = land.length;
+        int a = land[0][0], b = land[0][1], c = land[0][2], d = land[0][3];
+
+        for (int i = 1; i < n; i++) {
+            int na = land[i][0] + Math.max(Math.max(b, c), d);
+            int nb = land[i][1] + Math.max(Math.max(a, c), d);
+            int nc = land[i][2] + Math.max(Math.max(a, b), d);
+            int nd = land[i][3] + Math.max(Math.max(a, b), c);
+            a = na; b = nb; c = nc; d = nd;
+        }
+        return Math.max(Math.max(a, b), Math.max(c, d));
+    }
+}
+```