結果
| 問題 | No.1382 Travel in Mitaru city |
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2023-01-12 10:00:42 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 856 ms / 2,000 ms |
| コード長 | 2,949 bytes |
| 記録 | |
| コンパイル時間 | 2,958 ms |
| コンパイル使用メモリ | 85,316 KB |
| 実行使用メモリ | 65,028 KB |
| 最終ジャッジ日時 | 2024-12-23 03:17:39 |
| 合計ジャッジ時間 | 42,762 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 68 |
ソースコード
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();
int s = sc.nextInt() - 1;
int t = sc.nextInt() - 1;
int[] amounts = new int[n];
ArrayList<ArrayList<Integer>> graph = new ArrayList<>();
for (int i = 0; i < n; i++) {
amounts[i] = sc.nextInt();
graph.add(new ArrayList<>());
}
for (int i = 0; i < m; i++) {
int a = sc.nextInt() - 1;
int b = sc.nextInt() - 1;
graph.get(a).add(b);
graph.get(b).add(a);
}
PriorityQueue<Path> queue = new PriorityQueue<>();
queue.add(new Path(s, amounts[s]));
boolean[] visited = new boolean[n];
int current = Integer.MAX_VALUE;
int ans = 0;
while (queue.size() > 0) {
Path p = queue.poll();
if (visited[p.idx]) {
continue;
}
visited[p.idx] = true;
if (p.value < current) {
ans++;
current = p.value;
}
for (int x : graph.get(p.idx)) {
queue.add(new Path(x, amounts[x]));
}
}
System.out.println(ans - 1);
}
static class Path implements Comparable<Path> {
int idx;
int value;
public Path(int idx, int value) {
this.idx = idx;
this.value = value;
}
public int compareTo(Path another) {
return another.value - 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();
}
}
tenten