結果

問題 No.2354 Poor Sight in Winter
ユーザー tentententen
提出日時 2024-04-03 13:06:48
言語 Java21
(openjdk 21)
結果
AC  
実行時間 858 ms / 2,000 ms
コード長 3,164 bytes
コンパイル時間 3,819 ms
コンパイル使用メモリ 79,516 KB
実行使用メモリ 71,288 KB
最終ジャッジ日時 2024-04-03 13:07:02
合計ジャッジ時間 14,028 ms
ジャッジサーバーID
(参考情報)
judge14 / judge11
このコードへのチャレンジ
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テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 54 ms
54,092 KB
testcase_01 AC 54 ms
54,124 KB
testcase_02 AC 55 ms
54,084 KB
testcase_03 AC 54 ms
54,116 KB
testcase_04 AC 56 ms
54,092 KB
testcase_05 AC 54 ms
54,116 KB
testcase_06 AC 55 ms
54,092 KB
testcase_07 AC 54 ms
54,128 KB
testcase_08 AC 55 ms
54,084 KB
testcase_09 AC 55 ms
54,096 KB
testcase_10 AC 69 ms
54,096 KB
testcase_11 AC 759 ms
71,288 KB
testcase_12 AC 326 ms
67,900 KB
testcase_13 AC 829 ms
70,876 KB
testcase_14 AC 833 ms
71,008 KB
testcase_15 AC 735 ms
67,516 KB
testcase_16 AC 777 ms
70,740 KB
testcase_17 AC 858 ms
68,500 KB
testcase_18 AC 290 ms
61,408 KB
testcase_19 AC 599 ms
69,920 KB
testcase_20 AC 425 ms
62,260 KB
testcase_21 AC 110 ms
56,012 KB
testcase_22 AC 304 ms
61,680 KB
testcase_23 AC 280 ms
61,776 KB
testcase_24 AC 504 ms
63,724 KB
testcase_25 AC 222 ms
61,356 KB
testcase_26 AC 186 ms
60,736 KB
testcase_27 AC 85 ms
55,252 KB
testcase_28 AC 102 ms
55,632 KB
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ソースコード

diff #

import java.io.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int k = sc.nextInt();
        Point[] points = new Point[n + 2];
        for (int i = 0; i < n + 2; i++) {
            points[i] = new Point(sc.nextInt(), sc.nextInt());
        }
        int[][] distances = new int[n + 2][n + 2];
        for (int i = 0; i < n + 2; i++) {
            for (int j = i + 1; j < n + 2; j++) {
                distances[i][j] = points[i].getDistance(points[j]);
                distances[j][i] = distances[i][j];
            }
        }
        int left = 0;
        int right = 200000;
        PriorityQueue<Path> queue = new PriorityQueue<>();
        int[] costs = new int[n + 2];
        while (right - left > 1) {
            int m = (left + right) / 2;
            Arrays.fill(costs, Integer.MAX_VALUE);
            queue.add(new Path(0, 0));
            while (queue.size() > 0) {
                Path p = queue.poll();
                if (costs[p.idx] <= p.value) {
                    continue;
                }
                costs[p.idx] = p.value;
                for (int i = 0; i < n + 2; i++) {
                    if (costs[i] < Integer.MAX_VALUE) {
                        continue;
                    }
                    queue.add(new Path(i, p.value + (distances[p.idx][i] - 1) / m));
                }
            }
            if (costs[1] <= k) {
                right = m;
            } else {
                left = m;
            }
        }
        System.out.println(right);
    }
    
    static class Path implements Comparable<Path> {
        int idx;
        int value;
        
        public Path (int idx, int value) {
            this.idx = idx;
            this.value = value;
        }
        
        public int compareTo(Path another) {
            return value - another.value;
        }
    }
    
    static class Point {
        int x;
        int y;
        
        public Point(int x, int y) {
            this.x = x;
            this.y = y;
        }
        
        public int getDistance(Point p) {
            return Math.abs(x - p.x) + Math.abs(y - p.y);
        }
    }
}
class Scanner {
    BufferedReader br;
    StringTokenizer st = new StringTokenizer("");
    StringBuilder sb = new StringBuilder();
    
    public Scanner() {
        try {
            br = new BufferedReader(new InputStreamReader(System.in));
        } catch (Exception e) {
            
        }
    }
    
    public int nextInt() {
        return Integer.parseInt(next());
    }
    
    public long nextLong() {
        return Long.parseLong(next());
    }
    
    public double nextDouble() {
        return Double.parseDouble(next());
    }
    
    public String next() {
        try {
            while (!st.hasMoreTokens()) {
                st = new StringTokenizer(br.readLine());
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            return st.nextToken();
        }
    }
    
}
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