[20251106] BOJ / G4 / 호텔 / 이종환

0224LJH/202511/06 BOJ 호텔.md

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+```java
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.StringTokenizer;
+
+public class Main { 
+
+	static class City{
+		int cost;
+		int value;
+
+		public City(int cost, int value) {
+			this.cost = cost;
+			this.value = value;
+		}
+	}
+	static int[] dp;
+	static City[] cities;
+	static int goal,cityCnt,ans = Integer.MAX_VALUE;
+
+    public static void main(String[] args) throws IOException {
+    	init();
+    	process();
+    	print();
+    }
+
+    private static void init() throws IOException{
+    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));;
+    	StringTokenizer st = new StringTokenizer(br.readLine());
+    	goal = Integer.parseInt(st.nextToken());
+    	cityCnt = Integer.parseInt(st.nextToken());
+    	dp = new int[1101];
+    	cities = new City[cityCnt];
+
+    	Arrays.fill(dp, Integer.MAX_VALUE);
+    	dp[0] = 0;
+
+
+    	for (int i = 0; i < cityCnt; i++) {
+    		st = new StringTokenizer(br.readLine());
+    		int cost = Integer.parseInt(st.nextToken());
+    		int value = Integer.parseInt(st.nextToken());
+    		cities[i] = new City(cost,value);
+    	}
+
+
+    }
+
+    private static void process() {
+    	for (City c: cities) {
+    		int cost = c.cost;
+    		int value = c.value;
+
+    		for (int i = value; i <= 1100; i++) {
+    			if (dp[i] > dp[i-value]+cost) {
+    				dp[i] = dp[i-value]+cost;
+    			}
+    		}
+    	}
+
+
+    	for (int i = goal; i <= 1100; i++) {
+    		ans = Math.min(ans, dp[i]);
+    	}
+
+    }
+
+
+
+    private static void print() {
+    	System.out.println(ans);
+    }
+}
+
+
+```