結果
問題 | No.1858 Gorgeous Knapsack |
ユーザー |
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提出日時 | 2022-02-28 11:09:43 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 946 ms / 2,000 ms |
コード長 | 2,555 bytes |
コンパイル時間 | 1,849 ms |
コンパイル使用メモリ | 77,704 KB |
実行使用メモリ | 250,032 KB |
最終ジャッジ日時 | 2024-07-06 13:34:33 |
合計ジャッジ時間 | 12,225 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 37 |
ソースコード
import java.io.*;import java.util.*;public class Main {static Jewel[] jewels;static long[][] dp;public static void main(String[] args) throws Exception {Scanner sc = new Scanner();int n = sc.nextInt();int m = sc.nextInt();jewels = new Jewel[n];for (int i = 0; i < n; i++) {jewels[i] = new Jewel(sc.nextInt(), sc.nextInt());}Arrays.sort(jewels);dp = new long[n][m + 1];for (long[] arr : dp) {Arrays.fill(arr, -1);}long ans = 0;for (int i = 0; i < n; i++) {ans = Math.max(ans, (dfw(i - 1, m - jewels[i].weight) + jewels[i].value) * jewels[i].value);}System.out.println(ans);}static long dfw(int idx, int w) {if (w < 0) {return Integer.MIN_VALUE;}if (idx < 0) {return 0;}if (dp[idx][w] < 0) {dp[idx][w] = Math.max(dfw(idx - 1, w), dfw(idx - 1, w - jewels[idx].weight) + jewels[idx].value);}return dp[idx][w];}static boolean getEnable(int x, int y) {if (x == y) {return true;}if (x > y) {return false;}for (int i = 2; i <= Math.sqrt(y); i++) {if (y % i > 0) {continue;}if (getEnable(x, i + y / i)) {return true;}}return false;}static class Jewel implements Comparable<Jewel> {int value;int weight;public Jewel(int value, int weight) {this.value = value;this.weight = weight;}public int compareTo(Jewel another) {return another.value - value;}}}class Scanner {BufferedReader br = new BufferedReader(new InputStreamReader(System.in));StringTokenizer st = new StringTokenizer("");public Scanner() throws Exception {}public int nextInt() throws Exception {return Integer.parseInt(next());}public long nextLong() throws Exception {return Long.parseLong(next());}public double nextDouble() throws Exception {return Double.parseDouble(next());}public String next() throws Exception {if (!st.hasMoreTokens()) {st = new StringTokenizer(br.readLine());}return st.nextToken();}}