結果

問題 No.1065 電柱 / Pole (Easy)
ユーザー mikitmikit
提出日時 2020-05-29 22:13:14
言語 Java21
(openjdk 21)
結果
AC  
実行時間 1,090 ms / 2,000 ms
コード長 5,728 bytes
コンパイル時間 2,563 ms
コンパイル使用メモリ 97,508 KB
実行使用メモリ 98,584 KB
最終ジャッジ日時 2024-04-23 22:53:09
合計ジャッジ時間 29,652 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge3
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 68 ms
51,424 KB
testcase_01 AC 70 ms
51,244 KB
testcase_02 AC 693 ms
77,772 KB
testcase_03 AC 851 ms
94,664 KB
testcase_04 AC 959 ms
94,152 KB
testcase_05 AC 618 ms
90,092 KB
testcase_06 AC 637 ms
90,236 KB
testcase_07 AC 291 ms
63,688 KB
testcase_08 AC 723 ms
95,112 KB
testcase_09 AC 210 ms
57,400 KB
testcase_10 AC 409 ms
75,508 KB
testcase_11 AC 324 ms
66,928 KB
testcase_12 AC 303 ms
62,908 KB
testcase_13 AC 712 ms
74,832 KB
testcase_14 AC 850 ms
79,208 KB
testcase_15 AC 1,001 ms
88,344 KB
testcase_16 AC 564 ms
67,264 KB
testcase_17 AC 1,040 ms
92,860 KB
testcase_18 AC 417 ms
64,104 KB
testcase_19 AC 975 ms
89,984 KB
testcase_20 AC 398 ms
64,888 KB
testcase_21 AC 523 ms
64,524 KB
testcase_22 AC 882 ms
87,928 KB
testcase_23 AC 134 ms
54,240 KB
testcase_24 AC 146 ms
54,336 KB
testcase_25 AC 341 ms
62,308 KB
testcase_26 AC 610 ms
71,860 KB
testcase_27 AC 551 ms
69,840 KB
testcase_28 AC 870 ms
79,068 KB
testcase_29 AC 245 ms
56,924 KB
testcase_30 AC 930 ms
88,592 KB
testcase_31 AC 643 ms
77,164 KB
testcase_32 AC 537 ms
71,876 KB
testcase_33 AC 989 ms
90,372 KB
testcase_34 AC 493 ms
65,436 KB
testcase_35 AC 833 ms
85,524 KB
testcase_36 AC 111 ms
52,692 KB
testcase_37 AC 136 ms
55,300 KB
testcase_38 AC 114 ms
52,656 KB
testcase_39 AC 137 ms
55,264 KB
testcase_40 AC 93 ms
52,236 KB
testcase_41 AC 1,090 ms
98,584 KB
testcase_42 AC 431 ms
67,080 KB
testcase_43 AC 703 ms
79,260 KB
testcase_44 AC 358 ms
64,952 KB
testcase_45 AC 660 ms
78,500 KB
testcase_46 AC 66 ms
51,360 KB
testcase_47 AC 62 ms
51,152 KB
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ソースコード

diff # 

import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.stream.IntStream;
import java.util.Arrays;
import java.util.PriorityQueue;
import java.util.OptionalInt;
import java.util.ArrayList;
import java.io.BufferedOutputStream;
import java.util.AbstractCollection;
import java.nio.charset.Charset;
import java.util.StringTokenizer;
import java.io.OutputStreamWriter;
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UncheckedIOException;
import java.util.List;
import java.util.stream.Stream;
import java.io.Writer;
import java.io.BufferedReader;
import java.util.Comparator;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author mikit
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        LightScanner in = new LightScanner(inputStream);
        LightWriter out = new LightWriter(outputStream);
        YC1065 solver = new YC1065();
        solver.solve(1, in, out);
        out.close();
    }

    static class YC1065 {
        public void solve(int testNumber, LightScanner in, LightWriter out) {
            int n = in.ints(), m = in.ints(), start = in.ints() - 1, goal = in.ints() - 1;
            int[] px = new int[n], py = new int[n];
            in.ints(px, py);
            List<List<Integer>> adj = new ArrayList<>();
            for (int i = 0; i < n; i++) adj.add(new ArrayList<>());
            for (int i = 0; i < m; i++) {
                int x = in.ints() - 1, y = in.ints() - 1;
                adj.get(x).add(y);
                adj.get(y).add(x);
            }
            double[] dist = new double[n];
            Arrays.fill(dist, Double.MAX_VALUE);
            PriorityQueue<Integer> q = new PriorityQueue<>(Comparator.comparing(x -> dist[x]));
            dist[start] = 0;
            q.offer(start);
            while (!q.isEmpty()) {
                int now = q.poll();
                for (int nxt : adj.get(now)) {
                    double d = dist[now] + Math.hypot(px[now] - px[nxt], py[now] - py[nxt]);
                    if (dist[nxt] <= d) continue;
                    dist[nxt] = d;
                    q.offer(nxt);
                }
            }
            out.ans(dist[goal], 10).ln();
        }

    }

    static class LightWriter implements AutoCloseable {
        private final Writer out;
        private boolean autoflush = false;
        private boolean breaked = true;

        public LightWriter(Writer out) {
            this.out = out;
        }

        public LightWriter(OutputStream out) {
            this(new OutputStreamWriter(new BufferedOutputStream(out), Charset.defaultCharset()));
        }

        public LightWriter print(char c) {
            try {
                out.write(c);
                breaked = false;
            } catch (IOException ex) {
                throw new UncheckedIOException(ex);
            }
            return this;
        }

        public LightWriter print(String s) {
            try {
                out.write(s, 0, s.length());
                breaked = false;
            } catch (IOException ex) {
                throw new UncheckedIOException(ex);
            }
            return this;
        }

        public LightWriter ans(double x, int n) {
            if (!breaked) {
                print(' ');
            }
            if (x < 0) {
                print('-');
                x = -x;
            }
            x += Math.pow(10, -n) / 2;
            print(Long.toString((long) x)).print('.');
            x -= (long) x;
            for (int i = 0; i < n; i++) {
                x *= 10;
                print((char) ('0' + ((int) x)));
                x -= (int) x;
            }
            return this;
        }

        public LightWriter ln() {
            print(System.lineSeparator());
            breaked = true;
            if (autoflush) {
                try {
                    out.flush();
                } catch (IOException ex) {
                    throw new UncheckedIOException(ex);
                }
            }
            return this;
        }

        public void close() {
            try {
                out.close();
            } catch (IOException ex) {
                throw new UncheckedIOException(ex);
            }
        }

    }

    static class LightScanner implements AutoCloseable {
        private BufferedReader reader = null;
        private StringTokenizer tokenizer = null;

        public LightScanner(InputStream in) {
            reader = new BufferedReader(new InputStreamReader(in));
        }

        public String string() {
            if (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new UncheckedIOException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int ints() {
            return Integer.parseInt(string());
        }

        public void ints(int[]... arrays) {
            int l = Arrays.stream(arrays).mapToInt(a -> a.length).min().orElse(0);
            for (int i = 0; i < l; i++) {
                for (int j = 0; j < arrays.length; j++) {
                    arrays[j][i] = ints();
                }
            }
        }

        public void close() {
            try {
                this.reader.close();
            } catch (IOException ex) {
                throw new UncheckedIOException(ex);
            }
        }

    }
}
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