From 9ef66292563dd3258b45a8eb7b80ca4cda97d98d Mon Sep 17 00:00:00 2001
From: lkhyun <102892446+lkhyun@users.noreply.github.com>
Date: Mon, 12 Jan 2026 10:26:19 +0900
Subject: [PATCH] =?UTF-8?q?[20260112]=20BOJ=20/=20G3=20/=20=ED=8A=B8?=
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---
 ...4\354\206\214 \353\271\204\354\232\251.md" | 50 +++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 "lkhyun/202601/12 BOJ G3 \355\212\270\353\246\254\353\245\274 \353\263\265\354\236\241\355\225\230\352\262\214 \354\203\211\354\271\240\355\225\230\353\212\224 \354\265\234\354\206\214 \353\271\204\354\232\251.md"

diff --git "a/lkhyun/202601/12 BOJ G3 \355\212\270\353\246\254\353\245\274 \353\263\265\354\236\241\355\225\230\352\262\214 \354\203\211\354\271\240\355\225\230\353\212\224 \354\265\234\354\206\214 \353\271\204\354\232\251.md" "b/lkhyun/202601/12 BOJ G3 \355\212\270\353\246\254\353\245\274 \353\263\265\354\236\241\355\225\230\352\262\214 \354\203\211\354\271\240\355\225\230\353\212\224 \354\265\234\354\206\214 \353\271\204\354\232\251.md"
new file mode 100644
index 00000000..7979dc91
--- /dev/null
+++ "b/lkhyun/202601/12 BOJ G3 \355\212\270\353\246\254\353\245\274 \353\263\265\354\236\241\355\225\230\352\262\214 \354\203\211\354\271\240\355\225\230\353\212\224 \354\265\234\354\206\214 \353\271\204\354\232\251.md"	
@@ -0,0 +1,50 @@
+```java
+import java.util.*;
+import java.io.*;
+
+public class Main {
+    static int N;
+    static List<Integer>[] adjList;
+    static long[][] dp;
+    static int[] whiteCost;
+    static int[] blackCost;
+    static StringTokenizer st;
+
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        N = Integer.parseInt(br.readLine());
+        adjList = new List[N];
+        for (int i = 0; i < N; i++) {
+            adjList[i] = new ArrayList<>();
+        }
+        dp = new long[N][2];
+        whiteCost = new int[N];
+        blackCost = new int[N];
+
+        for (int i = 1; i < N; i++) {
+            st = new StringTokenizer(br.readLine());
+            int from = Integer.parseInt(st.nextToken());
+            int to = Integer.parseInt(st.nextToken());
+            adjList[from].add(to);
+        }
+
+        for (int i = 0; i < N; i++) {
+            st = new StringTokenizer(br.readLine());
+            whiteCost[i] = Integer.parseInt(st.nextToken());
+            blackCost[i] = Integer.parseInt(st.nextToken());
+        }
+
+        dfs(0);
+        System.out.println(Math.min(dp[0][0],dp[0][1]));
+    }
+    public static void dfs(int cur){
+        dp[cur][0] = whiteCost[cur];
+        dp[cur][1] = blackCost[cur];
+        for (Integer next : adjList[cur]) {
+            dfs(next);
+            dp[cur][0] += Math.min(dp[next][0],dp[next][1]);
+            dp[cur][1] += dp[next][0];
+        }
+    }
+}
+```