結果
| 問題 | No.1473 おでぶなおばけさん |
| コンテスト | |
| ユーザー |
tenten
|
| 提出日時 | 2024-02-08 13:09:46 |
| 言語 | Java (openjdk 23) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,776 bytes |
| 記録 | |
| コンパイル時間 | 2,478 ms |
| コンパイル使用メモリ | 84,780 KB |
| 実行使用メモリ | 81,936 KB |
| 最終ジャッジ日時 | 2024-09-28 12:44:07 |
| 合計ジャッジ時間 | 33,010 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 36 WA * 11 |
ソースコード
import java.io.*;
import java.util.*;
import java.util.function.*;
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();
UnionFindTree uft = new UnionFindTree(n);
Road weight = IntStream.range(0, m).mapToObj(i -> new Road(sc.nextInt() - 1, sc.nextInt() - 1, sc.nextInt()))
.sorted()
.filter(x -> uft.unite(x)).findFirst().orElse(null);
System.out.println(weight.value + " " + uft.getCost());
}
static class UnionFindTree {
int size;
int[] parents;
List<List<Integer>> graph;
public UnionFindTree(int size) {
this.size = size;
parents = IntStream.range(0, size).map(i -> i).toArray();
graph = IntStream.range(0,size).mapToObj(i -> new ArrayList<Integer>()).collect(Collectors.toList());
}
public int find(int x) {
if (x == parents[x]) {
return x;
} else {
return parents[x] = find(parents[x]);
}
}
public boolean same(int x, int y) {
return find(x) == find(y);
}
public boolean unite(Road r) {
if (!same(0, size - 1)) {
int left = find(r.left);
int right = find(r.right);
if (left != right) {
parents[left] = right;
}
graph.get(r.left).add(r.right);
graph.get(r.right).add(r.left);
}
return same(0, size - 1);
}
public int getCost() {
int[] costs = new int[size];
Arrays.fill(costs, Integer.MAX_VALUE);
ArrayDeque<Path> deq = new ArrayDeque<>();
deq.add(new Path(0, 0));
while (deq.size() > 0) {
Path p = deq.poll();
if (costs[p.idx] <= p.value) {
continue;
}
costs[p.idx] = p.value;
for (int x : graph.get(p.idx)) {
deq.add(new Path(x, p.value + 1));
}
}
return costs[size - 1];
}
}
static class Path {
int idx;
int value;
public Path(int idx, int value) {
this.idx = idx;
this.value = value;
}
}
static class Road implements Comparable<Road> {
int left;
int right;
int value;
public Road(int left, int right, int value) {
this.left = left;
this.right = right;
this.value = value;
}
public int compareTo(Road another) {
return another.value - value;
}
}
}
class Scanner {
BufferedReader br;
StringTokenizer st = new StringTokenizer("");
StringBuilder sb = new StringBuilder();
public Scanner() {
try {
br = new BufferedReader(new InputStreamReader(System.in));
} catch (Exception e) {
}
}
public int nextInt() {
return Integer.parseInt(next());
}
public long nextLong() {
return Long.parseLong(next());
}
public double nextDouble() {
return Double.parseDouble(next());
}
public String next() {
try {
while (!st.hasMoreTokens()) {
st = new StringTokenizer(br.readLine());
}
} catch (Exception e) {
e.printStackTrace();
} finally {
return st.nextToken();
}
}
}
tenten