結果
| 問題 | No.34 砂漠の行商人 |
| コンテスト | |
| ユーザー |
uafr_cs
|
| 提出日時 | 2015-09-16 21:09:11 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 204 ms / 5,000 ms |
| コード長 | 2,733 bytes |
| コンパイル時間 | 2,425 ms |
| コンパイル使用メモリ | 82,536 KB |
| 実行使用メモリ | 41,516 KB |
| 最終ジャッジ日時 | 2024-06-28 10:24:19 |
| 合計ジャッジ時間 | 6,606 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| other | AC * 26 |
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.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 final int[][] move_dir = {{1, 0}, {-1, 0}, {0, 1}, {0, -1}};
public static void main(String[] args) throws IOException {
Scanner sc = new Scanner(System.in);
final int N = sc.nextInt();
final int V = sc.nextInt();
final int Sx = sc.nextInt() - 1;
final int Sy = sc.nextInt() - 1;
final int Gx = sc.nextInt() - 1;
final int Gy = sc.nextInt() - 1;
int[][] damage = new int[N][N];
for(int i = 0; i < N; i++){
for(int j = 0; j < N; j++){
damage[i][j] = sc.nextInt();
}
}
int[][] cur_max_hp = new int[N][N];
int[][] next_max_hp = new int[N][N];
for(int i = 0; i < N; i++){
for(int j = 0; j < N; j++){
cur_max_hp[i][j] = 0;
next_max_hp[i][j] = 0;
}
}
int count = 0;
cur_max_hp[Sy][Sx] = V;
while(true){
for(int i = 0; i < N; i++){
for(int j = 0; j < N; j++){
next_max_hp[i][j] = cur_max_hp[i][j];
}
}
boolean updated = false;
for(int x = 0; x < N; x++){
for(int y = 0; y < N; y++){
for(int[] move : move_dir){
final int nx = x + move[0];
final int ny = y + move[1];
if(nx < 0 || nx >= N || ny < 0 || ny >= N){
continue;
}
final int next_hp = cur_max_hp[y][x] - damage[ny][nx];
if(next_hp > next_max_hp[ny][nx]){
updated = true;
next_max_hp[ny][nx] = next_hp;
}
}
}
}
if(next_max_hp[Gy][Gx] > 0){
System.out.println(count + 1);
break;
}else if(!updated){
System.out.println(-1);
break;
}
count++;
int[][] tmp = cur_max_hp;
cur_max_hp = next_max_hp;
next_max_hp = tmp;
}
}
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