結果
問題 |
No.1858 Gorgeous Knapsack
|
ユーザー |
![]() |
提出日時 | 2023-12-07 09:16:00 |
言語 | Java (openjdk 23) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,725 bytes |
コンパイル時間 | 6,206 ms |
コンパイル使用メモリ | 91,412 KB |
実行使用メモリ | 185,468 KB |
最終ジャッジ日時 | 2024-09-27 02:00:39 |
合計ジャッジ時間 | 15,106 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
(要ログイン)
ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 36 WA * 1 |
ソースコード
import java.io.*; import java.util.*; import java.util.stream.*; public class Main { static Jewel[] jewels; static int[][] 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 int[n][m + 1]; for (int[] arr : dp) { Arrays.fill(arr, -1); } long ans = 0; for (int i = n - 1; i >= 0; i--) { long base = jewels[i].value; ans = Math.max(ans, base * (base + dfw(i - 1, m - jewels[i].weight))); } System.out.println(ans); } static int dfw(int idx, int v) { if (v < 0) { return Integer.MIN_VALUE; } if (idx < 0) { return 0; } if (dp[idx][v] < 0) { dp[idx][v] = Math.max(dfw(idx - 1, v), dfw(idx - 1, v - jewels[idx].weight) + jewels[idx].value); } return dp[idx][v]; } 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 Utilities { static String arrayToLineString(Object[] arr) { return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n")); } static String arrayToLineString(int[] arr) { return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new)); } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); StringBuilder sb = new StringBuilder(); 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 int[] nextIntArray() throws Exception { return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray(); } public String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }