diff --git a/JHLEE325/202508/05 BOJ G5 ABCDE.md b/JHLEE325/202508/05 BOJ G5 ABCDE.md
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+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+
+    static int n, m;
+    static List<Integer>[] friends;
+    static boolean[] visited;
+    static boolean found = false;
+
+    public static void main(String[] args) throws Exception {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        StringTokenizer st = new StringTokenizer(br.readLine());
+
+        n = Integer.parseInt(st.nextToken());
+        m = Integer.parseInt(st.nextToken());
+
+        friends = new ArrayList[n];
+        for (int i = 0; i < n; i++) friends[i] = new ArrayList<>();
+
+        for (int i = 0; i < m; i++) {
+            st = new StringTokenizer(br.readLine());
+            int a = Integer.parseInt(st.nextToken());
+            int b = Integer.parseInt(st.nextToken());
+            friends[a].add(b);
+            friends[b].add(a);
+        }
+
+        visited = new boolean[n];
+        for (int i = 0; i < n && !found; i++) {
+            visited[i] = true;
+            dfs(i, 1);
+            visited[i] = false;
+        }
+
+        System.out.println(found ? 1 : 0);
+    }
+
+    static void dfs(int cur, int depth) {
+        if (found) return;
+        if (depth == 5) {
+            found = true;
+            return;
+        }
+
+        for (int next : friends[cur]) {
+            if (visited[next]) continue;
+            visited[next] = true;
+            dfs(next, depth + 1);
+            visited[next] = false;
+            if (found) return;
+        }
+    }
+}
+
+```