[20250629] BOJ / G4 / 물통 / 김수연

suyeun84/202506/29 BOJ G4 물통

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+```java
+import java.io.*;
+import java.util.*;
+
+public class boj2251 {
+	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 A, B, C;
+	static Set<Integer> answer;
+	static boolean[][][] visited;
+	static int[] capacity;
+	public static void main(String[] args) throws Exception {
+		nextLine();
+		A = nextInt();
+		B = nextInt();
+		C = nextInt();
+		answer = new TreeSet<>();
+		capacity = new int[]{A, B, C};
+		visited = new boolean[A + 1][B + 1][C + 1];
+
+		dfs(0, 0, C);
+
+		for (int a : answer) System.out.print(a + " ");
+	}
+	static void dfs(int a, int b, int c) {
+		if (visited[a][b][c]) return;
+
+        visited[a][b][c] = true;
+
+        if (a == 0) answer.add(c);
+
+        for (int i = 0; i < 3; i++) {
+            for (int j = 0; j < 3; j++) {
+                if (i != j) {
+                    int[] next = pour(new int[]{a, b, c}, i, j);
+                    dfs(next[0], next[1], next[2]);
+                }
+            }
+        }
+	}
+	static int[] pour(int[] state, int from, int to) {
+        int[] next = state.clone();
+        int amount = Math.min(state[from], capacity[to] - state[to]);
+        next[from] -= amount;
+        next[to] += amount;
+        return next;
+    }
+}
+```