結果
問題 | No.1858 Gorgeous Knapsack |
ユーザー |
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提出日時 | 2023-01-17 13:13:56 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 1,514 ms / 2,000 ms |
コード長 | 2,896 bytes |
コンパイル時間 | 2,588 ms |
コンパイル使用メモリ | 91,780 KB |
実行使用メモリ | 450,632 KB |
最終ジャッジ日時 | 2025-01-02 11:49:06 |
合計ジャッジ時間 | 16,432 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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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.*;import java.util.stream.*;public class Main {static long[][][] dp;static Juel[] juels;public static void main(String[] args) throws Exception {Scanner sc = new Scanner();int n = sc.nextInt();int m = sc.nextInt();juels = new Juel[n];for (int i = 0; i < n; i++) {juels[i] = new Juel(sc.nextInt(), sc.nextInt());}Arrays.sort(juels);dp = new long[2][n][m + 1];for (long[][] arr1 : dp) {for (long[] arr2 : arr1) {Arrays.fill(arr2, -1);}}System.out.println(dfw(0, n - 1, m));}static long dfw(int type, int idx, int w) {if (w < 0) {return Integer.MIN_VALUE;}if (idx < 0) {return 0;}if (dp[type][idx][w] < 0) {dp[type][idx][w] = dfw(type, idx - 1, w);if (type == 0) {dp[type][idx][w] = Math.max(dp[type][idx][w], (dfw(1, idx - 1, w - juels[idx].weight) + juels[idx].value) * juels[idx].value);} else {dp[type][idx][w] = Math.max(dp[type][idx][w], (dfw(1, idx - 1, w - juels[idx].weight) + juels[idx].value));}}return dp[type][idx][w];}static class Juel implements Comparable<Juel> {int weight;int value;public Juel(int value, int weight) {this.weight = weight;this.value = value;}public int compareTo(Juel 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();}}