結果
| 問題 |
No.340 雪の足跡
|
| コンテスト | |
| ユーザー |
uafr_cs
|
| 提出日時 | 2016-02-08 21:33:41 |
| 言語 | Java (openjdk 23) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 3,020 bytes |
| コンパイル時間 | 2,366 ms |
| コンパイル使用メモリ | 79,788 KB |
| 実行使用メモリ | 45,460 KB |
| 最終ジャッジ日時 | 2024-09-21 21:50:16 |
| 合計ジャッジ時間 | 6,898 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 5 |
| other | AC * 9 TLE * 1 -- * 22 |
ソースコード
import java.io.BufferedReader;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Scanner;
import java.util.Set;
import java.util.StringTokenizer;
public class Main {
public static void main(String[] args) throws IOException {
Scanner sc = new Scanner(System.in);
final int W = sc.nextInt();
final int H = sc.nextInt();
final int N = sc.nextInt();
ArrayList<HashSet<Integer>> adj = new ArrayList<HashSet<Integer>>();
for(int i = 0; i < W * H; i++){
adj.add(new HashSet<Integer>());
}
for(int i = 0; i < N; i++){
final int M = sc.nextInt();
int prev = sc.nextInt();
int prev_y = prev / W;
int prev_x = prev % W;
for(int j = 0; j < M; j++){
final int cur = sc.nextInt();
final int cur_y = cur / W;
final int cur_x = cur % W;
if(prev_y == cur_y){
final int y = cur_y;
final int min_x = Math.min(prev_x, cur_x);
final int max_x = Math.max(prev_x, cur_x);
for(int p_x = min_x, c_x = min_x + 1; c_x <= max_x; p_x = c_x, c_x++){
adj.get(y * W + p_x).add(y * W + c_x);
adj.get(y * W + c_x).add(y * W + p_x);
}
}else{
final int x = cur_x;
final int min_y = Math.min(prev_y, cur_y);
final int max_y = Math.max(prev_y, cur_y);
for(int p_y = min_y, c_y = min_y + 1; c_y <= max_y; p_y = c_y, c_y++){
adj.get(c_y * W + x).add(p_y * W + x);
adj.get(p_y * W + x).add(c_y * W + x);
}
}
prev = cur;
prev_x = cur_x;
prev_y = cur_y;
}
}
LinkedList<Integer> queue = new LinkedList<Integer>();
int[] costs = new int[H * W];
Arrays.fill(costs, Integer.MAX_VALUE);
queue.add(0);
costs[0] = 0;
while(!queue.isEmpty()){
final int pos = queue.poll();
if(pos == (W * H - 1)){
System.out.println(costs[pos]);
return;
}
for(final int next : adj.get(pos)){
final int next_cost = costs[pos] + 1;
if(costs[next] > next_cost){
costs[next] = next_cost;
queue.add(next);
}
}
}
System.out.println("Odekakedekinai..");
}
public static class Scanner implements Closeable {
private BufferedReader br;
private StringTokenizer tok;
public Scanner(InputStream is) throws IOException {
br = new BufferedReader(new InputStreamReader(is));
}
private void getLine() throws IOException {
while (!hasNext()) {
tok = new StringTokenizer(br.readLine());
}
}
private boolean hasNext() {
return tok != null && tok.hasMoreTokens();
}
public String next() throws IOException {
getLine();
return tok.nextToken();
}
public int nextInt() throws IOException {
return Integer.parseInt(next());
}
public long nextLong() throws IOException {
return Long.parseLong(next());
}
public void close() throws IOException {
br.close();
}
}
}
uafr_cs