[20250716] BOJ / G4 / 다이어트 / 설진영

Author: Seol-JY

Seol-JY/202507/16 G4 다이어트.md

@@ -0,0 +1,65 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    static int N;
+    static int mp, mf, ms, mv;
+    static int[][] foods;
+    static int minCost = Integer.MAX_VALUE;
+    static List<Integer> result = new ArrayList<>();
+    
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        N = Integer.parseInt(br.readLine());
+        
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        mp = Integer.parseInt(st.nextToken());
+        mf = Integer.parseInt(st.nextToken());
+        ms = Integer.parseInt(st.nextToken());
+        mv = Integer.parseInt(st.nextToken());
+        
+        foods = new int[N][5];
+        for (int i = 0; i < N; i++) {
+            st = new StringTokenizer(br.readLine());
+            for (int j = 0; j < 5; j++) {
+                foods[i][j] = Integer.parseInt(st.nextToken());
+            }
+        }
+        
+        backtrack(0, 0, 0, 0, 0, 0, new ArrayList<>());
+        
+        if (minCost == Integer.MAX_VALUE) {
+            System.out.println(-1);
+        } else {
+            System.out.println(minCost);
+            for (int i = 0; i < result.size(); i++) {
+                if (i > 0) System.out.print(" ");
+                System.out.print(result.get(i));
+            }
+            System.out.println();
+        }
+    }
+    
+    static void backtrack(int idx, int protein, int fat, int carbo, int vitamin, 
+                         int cost, List<Integer> selected) {
+        if (protein >= mp && fat >= mf && carbo >= ms && vitamin >= mv) {
+            if (cost < minCost) {
+                minCost = cost;
+                result = new ArrayList<>(selected);
+            }
+            return;
+        }
+        
+        if (idx == N || cost >= minCost) return;
+        
+        selected.add(idx + 1);
+        backtrack(idx + 1, protein + foods[idx][0], fat + foods[idx][1], 
+                  carbo + foods[idx][2], vitamin + foods[idx][3], 
+                  cost + foods[idx][4], selected);
+        selected.remove(selected.size() - 1);
+        
+        backtrack(idx + 1, protein, fat, carbo, vitamin, cost, selected);
+    }
+}
+```