結果

問題 No.2569 はじめてのおつかいHard
ユーザー tentententen
提出日時 2023-12-13 15:07:34
言語 Java21
(openjdk 21)
結果
AC  
実行時間 1,364 ms / 2,000 ms
コード長 3,683 bytes
コンパイル時間 2,812 ms
コンパイル使用メモリ 95,952 KB
実行使用メモリ 107,312 KB
最終ジャッジ日時 2023-12-13 15:07:52
合計ジャッジ時間 16,717 ms
ジャッジサーバーID
(参考情報)
judge14 / judge15
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 911 ms
79,384 KB
testcase_01 AC 965 ms
79,412 KB
testcase_02 AC 965 ms
79,452 KB
testcase_03 AC 907 ms
79,408 KB
testcase_04 AC 933 ms
79,436 KB
testcase_05 AC 1,255 ms
105,164 KB
testcase_06 AC 1,364 ms
92,920 KB
testcase_07 AC 921 ms
102,316 KB
testcase_08 AC 1,119 ms
107,312 KB
testcase_09 AC 1,282 ms
94,064 KB
testcase_10 AC 58 ms
54,112 KB
testcase_11 AC 56 ms
54,124 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();
        ArrayList<ArrayList<Path>> graph = new ArrayList<>();
        ArrayList<ArrayList<Path>> reverse = new ArrayList<>();
        for (int i = 0; i < n; i++) {
            graph.add(new ArrayList<>());
            reverse.add(new ArrayList<>());
        }
        for (int i = 0; i < m; i++) {
            int a = sc.nextInt() - 1;
            int b = sc.nextInt() - 1;
            int c = sc.nextInt();
            graph.get(a).add(new Path(b, c));
            reverse.get(b).add(new Path(a, c));
        }
        long[] lastCost = getCost(n - 1, graph);
        long[] lastReverse = getCost(n - 1, reverse);
        long[] preCost = getCost(n - 2, graph);
        long[] preReverse = getCost(n - 2, reverse);
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < n - 2; i++) {
            long ans = Math.min(lastReverse[i] + lastCost[n - 2] + preCost[i], preReverse[i] + preCost[n - 1] + lastCost[i]);
            if (ans >= Long.MAX_VALUE / 3) {
                ans = -1;
            }
            sb.append(ans).append("\n");
        }
        System.out.print(sb);
    }
    
    static long[] getCost(int start, ArrayList<ArrayList<Path>> graph) {
        PriorityQueue<Path> queue = new PriorityQueue<>();
        queue.add(new Path(start, 0));
        long[] costs = new long[graph.size()];
        Arrays.fill(costs, Long.MAX_VALUE / 3);
        while (queue.size() > 0) {
            Path p = queue.poll();
            if (costs[p.idx] <= p.value) {
                continue;
            }
            costs[p.idx] = p.value;
            for (Path x : graph.get(p.idx)) {
                queue.add(new Path(x.idx, x.value + p.value));
            }
        }
        return costs;
    }
    
    static class Path implements Comparable<Path> {
        int idx;
        long value;
        
        public Path(int idx, long value) {
            this.idx = idx;
            this.value = value;
        }
        
        public int compareTo(Path another) {
            if (value == another.value) {
                return 0;
            } else if (value < another.value) {
                return -1;
            } else {
                return 1;
            }
        }
    }
}
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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