結果
| 問題 |
No.614 壊れたキャンパス
|
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2023-04-07 12:59:50 |
| 言語 | Java (openjdk 23) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 4,384 bytes |
| コンパイル時間 | 3,604 ms |
| コンパイル使用メモリ | 92,020 KB |
| 実行使用メモリ | 195,804 KB |
| 最終ジャッジ日時 | 2024-10-02 18:32:37 |
| 合計ジャッジ時間 | 31,600 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 13 TLE * 7 |
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 k = sc.nextInt();
int s = sc.nextInt();
int t = sc.nextInt();
ArrayList<TreeMap<Integer, Integer>> compress = new ArrayList<>();
for (int i = 0; i < n; i++) {
compress.add(new TreeMap<>());
}
compress.get(0).put(s, null);
compress.get(n - 1).put(t, null);
int[] towers = new int[m];
int[] froms = new int[m];
int[] toes = new int[m];
for (int i = 0; i < m; i++) {
towers[i] = sc.nextInt() - 1;
froms[i] = sc.nextInt();
toes[i] = sc.nextInt();
compress.get(towers[i]).put(froms[i], null);
compress.get(towers[i] + 1).put(toes[i], null);
}
int idx = 0;
for (TreeMap<Integer, Integer> map : compress) {
for (int x : map.keySet()) {
map.put(x, idx++);
}
}
ArrayList<ArrayList<Path>> graph = new ArrayList<>();
for (int i = 0; i < idx; i++) {
graph.add(new ArrayList<>());
}
for (TreeMap<Integer, Integer> map : compress) {
int prev = -1;
for (int x : map.keySet()) {
if (prev >= 0) {
int y = map.get(x);
graph.get(y).add(new Path(y - 1, x - prev));
graph.get(y - 1).add(new Path(y, x - prev));
}
prev = x;
}
}
for (int i = 0; i < m; i++) {
int left = compress.get(towers[i]).get(froms[i]);
int right = compress.get(towers[i] + 1).get(toes[i]);
graph.get(left).add(new Path(right, 0));
}
int sIdx = compress.get(0).get(s);
int tIdx = compress.get(n - 1).get(t);
PriorityQueue<Path> queue = new PriorityQueue<>();
queue.add(new Path(sIdx, 0));
long[] costs = new long[idx];
Arrays.fill(costs, Long.MAX_VALUE);
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));
}
}
if (costs[tIdx] == Long.MAX_VALUE) {
System.out.println(-1);
} else {
System.out.println(costs[tIdx]);
}
}
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();
}
}
tenten