結果
| 問題 |
No.367 ナイトの転身
|
| コンテスト | |
| ユーザー |
古寺いろは
|
| 提出日時 | 2016-05-13 18:51:24 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 99 ms / 2,000 ms |
| コード長 | 3,368 bytes |
| コンパイル時間 | 828 ms |
| コンパイル使用メモリ | 114,844 KB |
| 実行使用メモリ | 24,064 KB |
| 最終ジャッジ日時 | 2024-10-05 16:34:54 |
| 合計ジャッジ時間 | 2,386 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| other | AC * 27 |
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc) Copyright (C) Microsoft Corporation. All rights reserved.
ソースコード
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.IO;
class Iroha
{
public Iroha() { }
public static int Main()
{
new Iroha().calc();
return 0;
}
Scanner cin;
int H, W;
string[] board;
void calc()
{
cin = new Scanner();
H = cin.nextInt();
W = cin.nextInt();
board = new string[H];
for (int i = 0; i < H; i++)
{
board[i] = cin.next();
}
int fx = 0, fy = 0;
int gx = 0, gy = 0;
for (int i = 0; i < H; i++)
{
for (int j = 0; j < W; j++)
{
if (board[i][j] == 'S')
{
fx = j;
fy = i;
}
if (board[i][j] == 'G')
{
gx = j;
gy = i;
}
}
}
int[] vy = { 1, 1, -1, -1 };
int[] vx = { 1, -1, 1, -1 };
int[] vy2 = { 2, 2, 1, 1, -1, -1, -2, -2 };
int[] vx2 = { 1, -1, 2, -2, 2, -2, 1, -1 };
int MAX = 99999999;
int[,,] dist = new int[H, W, 2];
for (int i = 0; i < H; i++)
{
for (int j = 0; j < W; j++)
{
for (int k = 0; k < 2; k++)
{
dist[i, j, k] = MAX;
}
}
}
Queue<Tuple<int, int, int>> q = new Queue<Tuple<int, int, int>>();
dist[fy, fx, 0] = 0;
q.Enqueue(Tuple.Create(fy, fx, 0));
while (q.Count > 0)
{
var now = q.Dequeue();
int y = now.Item1;
int x = now.Item2;
int z = now.Item3;
int[] v1, v2;
if (z == 0)
{
v1 = vy2; v2 = vx2;
}
else
{
v1 = vy; v2 = vx;
}
for (int k = 0; k < v1.Length; k++)
{
int ny = y + v1[k];
int nx = x + v2[k];
int nz = z;
if (!inside(ny, nx)) continue;
if (board[ny][nx] == 'R') nz ^= 1;
if (dist[ny, nx, nz] != MAX) continue;
dist[ny, nx, nz] = dist[y, x, z] + 1;
if (ny == gy && nx == gx)
{
Console.WriteLine(dist[ny, nx, nz]);
return;
}
q.Enqueue(Tuple.Create(ny, nx, nz));
}
}
Console.WriteLine(-1);
}
bool inside(int y, int x)
{
return y >= 0 && x >= 0 && y < H && x < W;
}
}
class Scanner
{
string[] s;
int i;
char[] cs = new char[] { ' ' };
public Scanner()
{
s = new string[0];
i = 0;
}
public string next()
{
if (i < s.Length) return s[i++];
string st = Console.ReadLine();
while (st == "") st = Console.ReadLine();
s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
i = 0;
return next();
}
public int nextInt()
{
return int.Parse(next());
}
public long nextLong()
{
return long.Parse(next());
}
public double nextDouble()
{
return double.Parse(next());
}
}
古寺いろは