[20250720] BOJ / G4 / 다이어트 / 이강현

Author: lkhyun

lkhyun/202507/20 BOJ G4 다이어트.md

@@ -0,0 +1,75 @@
+```java
+import java.util.*;
+import java.io.*;
+
+public class Main{
+    static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    static BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+    static StringTokenizer st;
+    static int N;
+    static int[] minimumCond = new int[4];
+    static int[][] food;
+    static int[] cost;
+
+    public static void main(String[] args) throws Exception {
+        N = Integer.parseInt(br.readLine());
+
+        st = new StringTokenizer(br.readLine());
+        for (int i = 0; i < 4; i++) {
+            minimumCond[i] = Integer.parseInt(st.nextToken());
+        }
+
+        food = new int[N][5];
+        for (int i = 0; i < N; i++) {
+            st = new StringTokenizer(br.readLine());
+            food[i][0] = Integer.parseInt(st.nextToken()); //단백질
+            food[i][1] = Integer.parseInt(st.nextToken()); //지방
+            food[i][2] = Integer.parseInt(st.nextToken()); //탄수화물
+            food[i][3] = Integer.parseInt(st.nextToken()); //비타민
+            food[i][4] = Integer.parseInt(st.nextToken()); //가격
+        }
+        int ans = Integer.MAX_VALUE;
+        String state = "";
+        cost = new int[1<<N];
+        loop:for (int i = 1; i < (1<<N); i++) {
+            int[] sum = new int[5];
+            for (int j = 0; j < N; j++) {
+                if((i & (1<<j)) != 0){
+                    for (int k = 0; k < 5; k++) {
+                        sum[k] += food[j][k];
+                    }
+                }
+            }
+            for (int k = 0; k < 4; k++) {
+                if(sum[k] < minimumCond[k]) continue loop;
+            }
+            if(ans > sum[4]){
+                ans = sum[4];
+                state = stateToStr(i);
+
+            }else if(ans == sum[4]){
+                String temp = stateToStr(i);
+                if(state.compareTo(temp) > 0){
+                    state = temp;
+                }
+            }
+
+        }
+        if(ans == Integer.MAX_VALUE){
+            bw.write("-1\n");
+        }else{
+            bw.write(ans+"\n"+state);
+        }
+        bw.close();
+    }
+    static String stateToStr(int state){
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < N; i++) {
+            if((state & (1<<i)) != 0){
+                sb.append(i+1).append(" ");
+            }
+        }
+        return sb.toString();
+    }
+}
+```