結果

問題 No.1767 BLUE to RED
ユーザー tentententen
提出日時 2023-11-30 18:47:02
言語 Java21
(openjdk 21)
結果
AC  
実行時間 1,434 ms / 2,000 ms
コード長 3,468 bytes
コンパイル時間 2,977 ms
コンパイル使用メモリ 85,220 KB
実行使用メモリ 88,092 KB
最終ジャッジ日時 2024-09-26 14:26:50
合計ジャッジ時間 26,496 ms
ジャッジサーバーID
(参考情報)
judge2 / judge1
このコードへのチャレンジ
(要ログイン)

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 60 ms
36,628 KB
testcase_01 AC 60 ms
37,040 KB
testcase_02 AC 60 ms
36,960 KB
testcase_03 AC 60 ms
37,072 KB
testcase_04 AC 86 ms
37,584 KB
testcase_05 AC 93 ms
38,216 KB
testcase_06 AC 66 ms
36,912 KB
testcase_07 AC 106 ms
38,448 KB
testcase_08 AC 107 ms
38,248 KB
testcase_09 AC 907 ms
68,580 KB
testcase_10 AC 1,199 ms
81,644 KB
testcase_11 AC 1,000 ms
69,436 KB
testcase_12 AC 885 ms
66,736 KB
testcase_13 AC 1,124 ms
79,384 KB
testcase_14 AC 1,399 ms
82,932 KB
testcase_15 AC 1,411 ms
82,988 KB
testcase_16 AC 1,399 ms
82,972 KB
testcase_17 AC 1,401 ms
88,092 KB
testcase_18 AC 1,434 ms
82,916 KB
testcase_19 AC 1,362 ms
83,420 KB
testcase_20 AC 1,365 ms
83,560 KB
testcase_21 AC 1,379 ms
83,312 KB
testcase_22 AC 1,385 ms
83,040 KB
testcase_23 AC 1,377 ms
84,624 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 m = sc.nextInt();
        TreeSet<Integer> reds = new TreeSet<>();
        for (int i = 0; i < n; i++) {
            reds.add(sc.nextInt());
        }
        int prev = -1;
        PriorityQueue<Bridge> bridges = new PriorityQueue<>();
        for (int i = 1; i <= m; i++) {
            int x = sc.nextInt();
            if (reds.first() <= x) {
                bridges.add(new Bridge(i, 0, x - reds.floor(x)));
            }
            if (reds.last() >= x) {
                bridges.add(new Bridge(i, 0, reds.ceiling(x) - x));
            }
            if (i > 1) {
                bridges.add(new Bridge(i, i - 1, x - prev));
            }
            prev = x;
        }
        UnionFindTree uft = new UnionFindTree(m + 1);
        long ans = 0;
        while (bridges.size() > 0) {
            ans += uft.unite(bridges.poll());
        }
        System.out.println(ans);
    }
    
    static class Bridge implements Comparable<Bridge> {
        int left;
        int right;
        int value;
        
        public Bridge(int left, int right, int value) {
            this.left = left;
            this.right = right;
            this.value = value;
        }
        
        public int compareTo(Bridge another) {
            return value - another.value;
        }
    }
    
    static class UnionFindTree {
        int[] parents;
        
        public UnionFindTree(int size) {
            parents = new int[size];
            for (int i = 0; i < size; i++) {
                parents[i] = i;
            }
        }
        
        public int find(int x) {
            if (x == parents[x]) {
                return x;
            } else {
                return parents[x] = find(parents[x]);
            }
        }
        
        public int unite(Bridge b) {
            int x = find(b.left);
            int y = find(b.right);
            if (x == y) {
                return 0;
            } else {
                parents[x] = y;
                return b.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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