[20250203] BOJ / 골드4 / 다이어트 / 김수연

suyeun84/202502/03 BOJ G4 다이어트.md

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+```java
+import java.util.*;
+import java.io.*;
+
+class boj19942
+{
+	static int N;
+	static Ingredient[] list;
+	static ArrayList<ArrayList<Integer>> combinations;
+
+	public static void main(String[] args) throws Exception{
+		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+		StringTokenizer st = new StringTokenizer(br.readLine());
+		int[] target = new int[4];
+		int answer = Integer.MAX_VALUE;
+		List<String> answer2 = new ArrayList<>();
+		N = Integer.parseInt(st.nextToken());
+		st = new StringTokenizer(br.readLine());
+		for (int i = 0; i < 4; i++) {
+			target[i] = Integer.parseInt(st.nextToken());
+		}
+
+		list = new Ingredient[N];
+		for (int i = 0; i < N; i++) {
+			st = new StringTokenizer(br.readLine());
+			list[i] = new Ingredient(i, Integer.parseInt(st.nextToken()), Integer.parseInt(st.nextToken()), Integer.parseInt(st.nextToken()), Integer.parseInt(st.nextToken()), Integer.parseInt(st.nextToken()));
+		}
+
+		//combinations
+		for (int i = 1; i <= N; i++) {
+			//식재료 선택 갯수
+			combinations = new ArrayList<>();
+			dfs(new ArrayList<Integer>(), i, 0);
+			for (List<Integer> ingredient : combinations) {
+				int mp = 0;
+				int mf = 0;
+				int ms = 0;
+				int mv = 0;
+				int mc = 0;
+				ArrayList<Integer> temp2 = new ArrayList<>();
+				for (int idx : ingredient) {
+					mp += list[idx].p;
+					mf += list[idx].f;
+					ms += list[idx].s;
+					mv += list[idx].v;
+					mc += list[idx].c;
+					temp2.add(list[idx].idx+1);
+				}
+				if (mp >= target[0] && mf >= target[1] && ms >= target[2] && mv >= target[3]) {
+					if (answer > mc) {
+						answer = mc;
+						answer2.clear();
+						Collections.sort(temp2);
+						String sb = "";
+						for (int t : temp2) {
+							sb = sb + t + " ";
+						}
+						answer2.add(sb);
+					} else if (answer == mc) {
+						Collections.sort(temp2);
+						String sb = "";
+						for (int t : temp2) {
+							sb = sb + t + " ";
+						}
+						answer2.add(sb);
+					}
+				}
+			}
+			combinations.clear();
+		}
+		if (answer != Integer.MAX_VALUE) {
+			System.out.println(answer);
+			Collections.sort(answer2);
+			System.out.println(answer2.get(0));
+		} else {
+			System.out.println(-1);
+		}
+	}
+
+	static void dfs(ArrayList<Integer> curr, int i, int idx) {
+		if (curr.size() == i) {
+			combinations.add(curr);
+			return;
+		}
+		for (int k = idx; k < N; k++) {
+			ArrayList<Integer> newList = new ArrayList<>();
+			for (int c : curr) {
+				newList.add(c);
+			}
+			newList.add(list[k].idx);
+			dfs(newList, i, k+1);
+		}
+	}
+
+	static class Ingredient {
+		int idx, p, f, s, v, c;
+
+		public Ingredient(int idx, int p, int f, int s, int v, int c) {
+			this.idx = idx;
+			this.p = p;
+			this.f = f;
+			this.s = s;
+			this.v = v;
+			this.c = c;
+		}
+	}
+}
+
+```