Submission #2698008
Source Code Expand
package C; import java.util.LinkedList; import java.util.Queue; import java.util.Scanner; class Pair { int i, j; public Pair(int i, int j) { this.i = i; this.j = j; } } public class Main { static int R, C, si, sj, gi, gj; static char[][] grid; static int[][] d; static int[] di = { -1, 0, 1, 0 }; static int[] dj = { 0, 1, 0, -1 }; //[i][j] //U: [i-1][j] = [i + di[0]][j + dj[0]] //R: [i][j+1] = [i + di[1]][j + dj[1]] //D: [i+1][j] //L: [i][j-1] static int bfs() { Pair start = new Pair(si, sj); //キューをつくる Queue<Pair> que = new LinkedList<Pair>(); //初期状態をキューにいれる que.add(start); while (!que.isEmpty()) { //現状態を取り出す Pair now = que.poll(); for (int k = 0; k < 4; k++) { int ni = now.i + di[k]; int nj = now.j + dj[k]; if (grid[ni][nj] == '.' && d[ni][nj] == 0) { d[ni][nj] = d[now.i][now.j] + 1; Pair next = new Pair(ni, nj); que.add(next); } } } return d[gi][gj]; } public static void main(String[] args) { Scanner in = new Scanner(System.in); R = in.nextInt(); C = in.nextInt(); si = in.nextInt() - 1; sj = in.nextInt() - 1; gi = in.nextInt() - 1; gj = in.nextInt() - 1; grid = new char[R][C]; d = new int[R][C]; for (int i = 0; i < R; i++) { String str = in.next(); for (int j = 0; j < C; j++) { grid[i][j] = str.charAt(j); } } System.out.println(bfs()); in.close(); } }
Submission Info
Submission Time | |
---|---|
Task | C - 幅優先探索 |
User | LitMc |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 1563 Byte |
Status | CE |
Compile Error
./Main.cpp:1:1: error: ‘package’ does not name a type package C; ^ ./Main.cpp:3:1: error: ‘import’ does not name a type import java.util.LinkedList; ^ ./Main.cpp:4:1: error: ‘import’ does not name a type import java.util.Queue; ^ ./Main.cpp:5:1: error: ‘import’ does not name a type import java.util.Scanner; ^ ./Main.cpp:11:9: error: expected ‘:’ before ‘Pair’ public Pair(int i, int j) ^ ./Main.cpp:16:1: error: expected ‘;’ after class definition } ^ ./Main.cpp: In constructor ‘Pair::Pair(int, int)’: ./Main.cpp:13:8: error: request for member ‘i’ in ‘(Pair*)this’, which is of pointer type ‘Pair*’ (maybe you meant to use ‘->’ ?) this.i = i; ^ ./Main.cpp:14:8: error: request for member ‘j’ in ‘(Pair*)this’, which is of pointer type ‘Pair*’ (maybe you meant to use ‘->’ ?) this.j = j; ^ ./Main.cpp: At global scope: ./Main.cpp:18:1: error: expected unqualified-id before ‘public’ public class Main ^