[20250608] BOJ / G4 / 호텔 / 이강현

Author: lkhyun

lkhyun/202506/08 BOJ G4 호텔.md

@@ -0,0 +1,47 @@
+```java
+import java.io.*;
+import java.util.*;
+
+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 C,N;
+    static int[] cost;
+    static int[] client;
+    static int[] dp;
+
+    public static void main(String[] args) throws IOException {
+        st = new StringTokenizer(br.readLine());
+        C = Integer.parseInt(st.nextToken());
+        N = Integer.parseInt(st.nextToken());
+
+        cost = new int[N];
+        client = new int[N];
+        dp = new int[1200]; //인덱스만큼의 인원을 홍보할때 그 비용
+        Arrays.fill(dp,Integer.MAX_VALUE);
+        dp[0] = 0;
+
+        for (int i = 0; i < N; i++) {
+            st = new StringTokenizer(br.readLine());
+            cost[i] = Integer.parseInt(st.nextToken()); //홍보 비용
+            client[i] = Integer.parseInt(st.nextToken()); //홍보했을때 얻는 고객 수
+        }
+
+        for (int i = 0; i < N; i++) {//모든 도시에 대해
+            for (int j = client[i]; j < dp.length; j++) {
+                if(dp[j-client[i]] != Integer.MAX_VALUE) {
+                    dp[j] = Math.min(dp[j], dp[j-client[i]] + cost[i]);
+                }
+            }
+        }
+        int min = Integer.MAX_VALUE;
+        for (int i = C; i < dp.length ; i++) {
+            min = Math.min(min, dp[i]);
+        }
+        bw.write(min + "");
+        bw.close();
+    }
+}
+
+```