diff --git "a/suyeun84/202509/30 BOJ G4 \353\256\244\355\203\210\353\246\254\354\212\244\355\201\254.md" "b/suyeun84/202509/30 BOJ G4 \353\256\244\355\203\210\353\246\254\354\212\244\355\201\254.md"
new file mode 100644
index 00000000..e6fef432
--- /dev/null
+++ "b/suyeun84/202509/30 BOJ G4 \353\256\244\355\203\210\353\246\254\354\212\244\355\201\254.md"	
@@ -0,0 +1,57 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class boj12869 {
+    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()); }
+
+    public static void main(String[] args) throws Exception {
+        nextLine();
+        int N = nextInt();
+
+        int[] hp = new int[3];
+        Arrays.fill(hp, 0);
+
+        nextLine();
+        for (int i = 0; i < N; i++) hp[i] = nextInt();
+
+        boolean[][][] visited = new boolean[61][61][61];
+        Queue<int[]> q = new ArrayDeque<>();
+        q.offer(new int[]{hp[0], hp[1], hp[2]});
+        visited[hp[0]][hp[1]][hp[2]] = true;
+
+        int[][] dmg = {
+                {9,3,1},{9,1,3},
+                {3,9,1},{3,1,9},
+                {1,9,3},{1,3,9}
+        };
+
+        int attacks = 0;
+        while (!q.isEmpty()) {
+            int sz = q.size();
+            for (int s = 0; s < sz; s++) {
+                int[] cur = q.poll();
+                int a = cur[0], b = cur[1], c = cur[2];
+                if (a == 0 && b == 0 && c == 0) {
+                    System.out.println(attacks);
+                    return;
+                }
+                for (int[] d : dmg) {
+                    int na = Math.max(0, a - d[0]);
+                    int nb = Math.max(0, b - d[1]);
+                    int nc = Math.max(0, c - d[2]);
+                    if (!visited[na][nb][nc]) {
+                        visited[na][nb][nc] = true;
+                        q.offer(new int[]{na, nb, nc});
+                    }
+                }
+            }
+            attacks++;
+        }
+        System.out.println(attacks);
+    }
+}
+```