結果

問題 No.2354 Poor Sight in Winter
ユーザー tentententen
提出日時 2023-07-05 11:48:17
言語 Java21
(openjdk 21)
結果
AC  
実行時間 1,264 ms / 2,000 ms
コード長 3,489 bytes
コンパイル時間 4,776 ms
コンパイル使用メモリ 88,368 KB
実行使用メモリ 68,404 KB
最終ジャッジ日時 2023-09-26 11:26:55
合計ジャッジ時間 19,010 ms
ジャッジサーバーID
(参考情報)
judge13 / judge14
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 46 ms
49,552 KB
testcase_01 AC 48 ms
49,644 KB
testcase_02 AC 47 ms
49,504 KB
testcase_03 AC 47 ms
49,788 KB
testcase_04 AC 47 ms
49,616 KB
testcase_05 AC 47 ms
49,696 KB
testcase_06 AC 47 ms
49,664 KB
testcase_07 AC 47 ms
49,940 KB
testcase_08 AC 47 ms
49,728 KB
testcase_09 AC 51 ms
49,664 KB
testcase_10 AC 51 ms
50,136 KB
testcase_11 AC 1,052 ms
68,024 KB
testcase_12 AC 791 ms
68,404 KB
testcase_13 AC 1,033 ms
64,436 KB
testcase_14 AC 1,024 ms
64,656 KB
testcase_15 AC 1,159 ms
68,092 KB
testcase_16 AC 1,264 ms
68,024 KB
testcase_17 AC 1,138 ms
68,112 KB
testcase_18 AC 514 ms
62,052 KB
testcase_19 AC 784 ms
67,616 KB
testcase_20 AC 688 ms
61,620 KB
testcase_21 AC 123 ms
54,764 KB
testcase_22 AC 375 ms
59,396 KB
testcase_23 AC 444 ms
59,284 KB
testcase_24 AC 644 ms
64,344 KB
testcase_25 AC 314 ms
58,832 KB
testcase_26 AC 301 ms
59,040 KB
testcase_27 AC 85 ms
52,916 KB
testcase_28 AC 101 ms
53,132 KB
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ソースコード

diff #

import java.io.*;
import java.util.*;
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[][] matrix = new int[n + 2][n + 2];
        for (int i = 0; i < n + 2; i++) {
            for (int j = i + 1; j < n + 2; j++) {
                int d = points[i].getDixtance(points[j]);
                matrix[i][j] = d;
                matrix[j][i] = d;
            }
        }
        PriorityQueue<Path> queue = new PriorityQueue<>();
        int[] costs = new int[n + 2];
        int left = 0;
        int right = Integer.MAX_VALUE / 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) {
                        queue.add(new Path(i, p.value + (matrix[i][p.idx] - 1) / m));
                    }
                }
            }
            if (costs[1] > k) {
                left = m;
            } else {
                right = m;
            }
        }
        System.out.println(right);
    }
    
    static class Point {
        int x;
        int y;
        
        public Point(int x, int y) {
            this.x = x;
            this.y = y;
        }
        
        public int getDixtance(Point p) {
            return Math.abs(x - p.x) + Math.abs(y - p.y);
        }
    }
    
    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;
        }
    }
}
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();
    }
    
}
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