From 15dbc8385c71be91577b975de40850881b7d1c3c Mon Sep 17 00:00:00 2001
From: suyeun84 <81475092+suyeun84@users.noreply.github.com>
Date: Fri, 13 Jun 2025 23:36:53 +0900
Subject: [PATCH] =?UTF-8?q?[20250613]=20BOJ=20/=20G3=20/=20=ED=85=80=20?=
 =?UTF-8?q?=ED=94=84=EB=A1=9C=EC=A0=9D=ED=8A=B8=20/=20=EA=B9=80=EC=88=98?=
 =?UTF-8?q?=EC=97=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 ...04\353\241\234\354\240\235\355\212\270.md" | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 "suyeun84/202506/13 BOJ G3 \355\205\200 \355\224\204\353\241\234\354\240\235\355\212\270.md"

diff --git "a/suyeun84/202506/13 BOJ G3 \355\205\200 \355\224\204\353\241\234\354\240\235\355\212\270.md" "b/suyeun84/202506/13 BOJ G3 \355\205\200 \355\224\204\353\241\234\354\240\235\355\212\270.md"
new file mode 100644
index 00000000..0401db48
--- /dev/null
+++ "b/suyeun84/202506/13 BOJ G3 \355\205\200 \355\224\204\353\241\234\354\240\235\355\212\270.md"	
@@ -0,0 +1,48 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class boj9466 {
+	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+	static StringTokenizer st;
+	static void nextLine() throws Exception {st = new StringTokenizer(br.readLine());}
+	static int nextInt() {return Integer.parseInt(st.nextToken());}
+	
+	static int N, cycle;
+	static int[] point;
+	static boolean[] check, visited;
+	public static void main(String[] args) throws Exception {
+		nextLine();
+		int T = nextInt();
+		
+		for (int tc = 0; tc < T; tc++) {
+			nextLine();
+			N = nextInt();
+			nextLine();
+			point = new int[N+1];
+			for (int i = 1; i <= N; i++) point[i] = nextInt();
+			cycle = 0;
+			check = new boolean[N+1];
+			visited = new boolean[N+1];
+			
+			for (int i = 1; i <= N; i++) {
+				if (check[i]) continue;
+				dfs(i);
+			}
+			System.out.println(N - cycle);
+		}
+
+	}
+	static void dfs(int idx) {
+		if (check[idx]) return;
+		if (visited[idx]) {
+			check[idx] = true;
+			cycle++;
+		}
+		visited[idx] = true;
+		dfs(point[idx]);
+		check[idx] = true;
+		visited[idx] = false;
+	}
+}
+```