From 1f5a9dfc583b42dd76797aca8e134b49dc1268f6 Mon Sep 17 00:00:00 2001
From: Jonghwan Lee <123362165+0224LJH@users.noreply.github.com>
Date: Mon, 10 Nov 2025 21:40:25 +0900
Subject: [PATCH] =?UTF-8?q?[20251110]=20BOJ=20/=20G4=20/=20=EC=A0=90?=
 =?UTF-8?q?=ED=94=84=20/=20=EC=9D=B4=EC=A2=85=ED=99=98?=
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---
 .../10 BOJ \354\240\220\355\224\204.md"       | 84 +++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 "0224LJH/202511/10 BOJ \354\240\220\355\224\204.md"

diff --git "a/0224LJH/202511/10 BOJ \354\240\220\355\224\204.md" "b/0224LJH/202511/10 BOJ \354\240\220\355\224\204.md"
new file mode 100644
index 00000000..3140d84f
--- /dev/null
+++ "b/0224LJH/202511/10 BOJ \354\240\220\355\224\204.md"	
@@ -0,0 +1,84 @@
+```java
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.PriorityQueue;
+import java.util.Queue;
+import java.util.StringTokenizer;
+
+public class Main {
+	
+	static int[][] dp = new int[10001][500];
+	static HashSet<Integer> set = new HashSet<>();
+	static int total,setSize,ans;
+
+	
+    public static void main(String[] args) throws IOException {
+    	init();
+    	process();
+    	print();
+
+    	
+    }
+    
+    private static void init() throws IOException{
+    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    	StringTokenizer st = new StringTokenizer(br.readLine());
+    	total = Integer.parseInt(st.nextToken());
+    	setSize = Integer.parseInt(st.nextToken());
+    	for (int i = 0; i < setSize; i++) {
+    		set.add(Integer.parseInt(br.readLine()));
+    	}
+    	for (int i = 0; i <= 10000; i++) {
+    		Arrays.fill(dp[i], Integer.MAX_VALUE);
+    	}
+
+
+    }
+    
+    private static void process() throws IOException {
+    	if (set.contains(2)) {
+    		ans = -1;
+    		return;
+    	}
+    	dp[2][1] = 1;
+    	for (int i = 2; i< total; i++) {
+    		if (set.contains(i)) continue;
+    		for (int j = 1; j < 500; j++) {
+    			if (dp[i][j] == Integer.MAX_VALUE) continue;
+    			
+    			int more = j+1;
+    			int less =j-1;
+    			if (more < 500 && i+more <= total && !set.contains(i+more)) {
+    				dp[i+more][more] = Math.min(dp[i+more][more], dp[i][j]+1);
+    			}
+    			if (j <  500 && i+j <= total && !set.contains(i+j)) {
+    				dp[i+j][j] = Math.min(dp[i+j][j], dp[i][j]+1);
+    			}
+    			if (less != 0 && i+less <=total && !set.contains(i+less)) {
+    				dp[i+less][less] = Math.min(dp[i+less][less], dp[i][j]+1);
+    			}
+    		}
+    	}
+    	
+    	ans = Integer.MAX_VALUE;
+    	for (int i = 1; i < 500; i++) {
+    		ans = Math.min(ans, dp[total][i]);
+    	}
+    	if (ans == Integer.MAX_VALUE) ans = -1;
+
+    }
+    
+
+	private static void print() {
+    	System.out.print(ans);
+    }
+
+}
+```