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 1,312 ms / 2,000 ms
コード長 3,468 bytes
コンパイル時間 2,536 ms
コンパイル使用メモリ 84,748 KB
実行使用メモリ 103,528 KB
最終ジャッジ日時 2023-11-30 18:47:29
合計ジャッジ時間 23,342 ms
ジャッジサーバーID
(参考情報)
judge11 / 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 53 ms
54,072 KB
testcase_01 AC 61 ms
54,076 KB
testcase_02 AC 52 ms
54,136 KB
testcase_03 AC 53 ms
54,092 KB
testcase_04 AC 80 ms
55,016 KB
testcase_05 AC 89 ms
55,144 KB
testcase_06 AC 56 ms
54,248 KB
testcase_07 AC 96 ms
55,404 KB
testcase_08 AC 104 ms
55,400 KB
testcase_09 AC 772 ms
82,376 KB
testcase_10 AC 1,112 ms
94,316 KB
testcase_11 AC 922 ms
83,652 KB
testcase_12 AC 776 ms
81,436 KB
testcase_13 AC 1,092 ms
92,020 KB
testcase_14 AC 1,173 ms
97,580 KB
testcase_15 AC 1,270 ms
101,376 KB
testcase_16 AC 1,304 ms
103,012 KB
testcase_17 AC 1,250 ms
97,556 KB
testcase_18 AC 1,302 ms
102,936 KB
testcase_19 AC 1,195 ms
101,168 KB
testcase_20 AC 1,223 ms
101,400 KB
testcase_21 AC 1,305 ms
103,528 KB
testcase_22 AC 1,312 ms
102,928 KB
testcase_23 AC 1,166 ms
101,148 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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