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 2023-12-04 18:34:34
言語 Java21
(openjdk 21)
結果
AC  
実行時間 1,613 ms / 2,000 ms
コード長 4,250 bytes
コンパイル時間 2,998 ms
コンパイル使用メモリ 92,340 KB
実行使用メモリ 103,356 KB
最終ジャッジ日時 2024-09-26 23:08:45
合計ジャッジ時間 17,930 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
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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 995 ms
67,568 KB
testcase_01 AC 969 ms
66,968 KB
testcase_02 AC 934 ms
67,064 KB
testcase_03 AC 930 ms
67,696 KB
testcase_04 AC 947 ms
67,788 KB
testcase_05 AC 1,535 ms
91,992 KB
testcase_06 AC 1,613 ms
77,156 KB
testcase_07 AC 1,358 ms
103,356 KB
testcase_08 AC 1,516 ms
99,996 KB
testcase_09 AC 1,436 ms
79,596 KB
testcase_10 AC 79 ms
37,612 KB
testcase_11 AC 77 ms
37,868 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));
        }
        PriorityQueue<Path> queue = new PriorityQueue<>();
        int[] starts = new int[]{n - 2, n - 1};
        long[][] costs = new long[2][n];
        for (int i = 0; i < 2; i++) {
            Arrays.fill(costs[i], Long.MAX_VALUE / 3);
            queue.add(new Path(starts[i], 0));
            while (queue.size() > 0) {
                Path p = queue.poll();
                if (costs[i][p.idx] <= p.value) {
                    continue;
                }
                costs[i][p.idx] = p.value;
                for (Path x : graph.get(p.idx)) {
                    queue.add(new Path(x.idx, p.value + x.value));
                }
            }
        }
        long[][] rcosts = new long[2][n];
        for (int i = 0; i < 2; i++) {
            Arrays.fill(rcosts[i], Long.MAX_VALUE / 3);
            queue.add(new Path(starts[i], 0));
            while (queue.size() > 0) {
                Path p = queue.poll();
                if (rcosts[i][p.idx] <= p.value) {
                    continue;
                }
                rcosts[i][p.idx] = p.value;
                for (Path x : reverse.get(p.idx)) {
                    queue.add(new Path(x.idx, p.value + x.value));
                }
            }
        }
        long[] ans = new long[n - 2];
        for (int i = 0; i < n - 2; i++) {
            long strait = rcosts[0][i] + costs[0][n - 1] + costs[1][i];
            long updown = rcosts[1][i] + costs[1][n - 2] + costs[0][i];
            long tmp = Math.min(strait, updown);
            if (tmp >= Long.MAX_VALUE / 3) {
                ans[i] = -1;
            } else {
                ans[i] = tmp;
            }
        }
        System.out.println(String.join("\n", Arrays.stream(ans).mapToObj(String::valueOf).toArray(String[]::new)));
    }
    
    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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