結果

問題 No.2026 Yet Another Knapsack Problem
ユーザー suisen
提出日時 2022-04-22 14:18:27
言語 Java
(openjdk 23)
結果
RE  
実行時間 -
コード長 2,626 bytes
コンパイル時間 2,376 ms
コンパイル使用メモリ 79,416 KB
実行使用メモリ 54,364 KB
最終ジャッジ日時 2024-06-27 12:17:18
合計ジャッジ時間 33,993 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge4
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 2 RE * 1
other AC * 24 RE * 11 TLE * 1 -- * 6
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ソースコード

diff #
プレゼンテーションモードにする

import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        var sc = new Scanner(System.in);
        var pw = new PrintWriter(System.out, false);
        solve(sc, pw);
        sc.close();
        pw.flush();
        pw.close();
    }
    public static final long INF = 1L << 60;
    public static void solve(Scanner sc, PrintWriter pw) {
        int n = Integer.parseInt(sc.next());
        var c = new int[n + 1];
        var v = new long[n + 1];
        for (int i = 1; i <= n; i++) {
            c[i] = Integer.parseInt(sc.next());
            v[i] = Integer.parseInt(sc.next());
        }
        var dp = new long[n + 1][n + 1];
        for (int i = 0; i <= n; i++) Arrays.fill(dp[i], -INF);
        dp[0][0] = 0;
        var sw = new SlidingWindowMaximum(n);
        for (int i = n; i > 0; i--) {
            final int max_num = n;
            final int max_sum = n;
            for (int num = 0; num <= max_num; num++) {
                final int sum_r = num > 0 ? i - 1 : max_sum;
                for (int sum = 0; sum <= sum_r; ++sum) {
                    final int max_p = Math.min(max_num - num, (max_sum - sum) / i);
                    sw.clear();
                    for (int p = 0; p <= max_p; ++p) {
                        sw.push_back(dp[num + p][sum + i * p] - (num + p) * v[i]);
                        if (p > c[i]) sw.pop_front();
                        dp[num + p][sum + i * p] = sw.query() + (num + p) * v[i];
                    }
                }
            }
        }
        
        for (int i = 1; i <= n; i++) {
            pw.println(Arrays.stream(dp[i]).max().getAsLong());
        }
    }
    public static class SlidingWindowMaximum {
        private int _l, _r;
        private int _ptr_l, _ptr_r;
        private long[] _val;
        private int[] _idx;
        public SlidingWindowMaximum(int cap) {
            _val = new long[cap];
            _idx = new int[cap];
            clear();
        }
    
        public void push_back(long v) {
            while (_ptr_l < _ptr_r && _val[_ptr_r - 1] < v) _ptr_r--;
            _val[_ptr_r] = v;
            _idx[_ptr_r] = _r;
            _ptr_r++;
            _r++;
        }
    
        public void pop_front() {
            if (_idx[_ptr_l] == _l) _ptr_l++;
            _l++;
        }
    
        public long query() {
            return _val[_ptr_l];
        }
    
        public void clear() {
            _l = _r = _ptr_l = _ptr_r = 0;
        }
    
        public int size() {
            return _r - _l;
        }
    }
}
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