diff --git "a/zinnnn37/202512/16 BOJ G1 \353\262\275 \353\266\200\354\210\230\352\263\240 \354\235\264\353\217\231\355\225\230\352\270\260 3.md" "b/zinnnn37/202512/16 BOJ G1 \353\262\275 \353\266\200\354\210\230\352\263\240 \354\235\264\353\217\231\355\225\230\352\270\260 3.md" new file mode 100644 index 00000000..f7ac8b7c --- /dev/null +++ "b/zinnnn37/202512/16 BOJ G1 \353\262\275 \353\266\200\354\210\230\352\263\240 \354\235\264\353\217\231\355\225\230\352\270\260 3.md" @@ -0,0 +1,106 @@ +```java +import java.io.*; +import java.util.ArrayDeque; +import java.util.Arrays; +import java.util.Queue; +import java.util.StringTokenizer; + +public class BJ_16933_벽_부수고_이동하기_3 { + + private static final int[] dx = { 0, -1, 0, 1 }; + private static final int[] dy = { -1, 0, 1, 0 }; + + private static BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + private static BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out)); + private static StringTokenizer st; + + private static int N, M, K; + private static char[][] matrix; + private static int[][] visited; + private static Queue q; + + private static class Node { + int x; + int y; + int k; + int cnt; + boolean isDay; + + public Node(int x, int y, int k, int cnt, boolean isDay) { + this.x = x; + this.y = y; + this.k = k; + this.cnt = cnt; + this.isDay = isDay; + } + + } + + public static void main(String[] args) throws IOException { + init(); + sol(); + + bw.flush(); + bw.close(); + br.close(); + } + + private static void init() throws IOException { + st = new StringTokenizer(br.readLine()); + N = Integer.parseInt(st.nextToken()); + M = Integer.parseInt(st.nextToken()); + K = Integer.parseInt(st.nextToken()); + + matrix = new char[N][M]; + for (int i = 0; i < N; i++) { + matrix[i] = br.readLine().toCharArray(); + } + + visited = new int[N][M]; + for (int i = 0; i < N; i++) { + Arrays.fill(visited[i], Integer.MAX_VALUE); + } + + q = new ArrayDeque<>(); + } + + private static void sol() throws IOException { + q.offer(new Node(0, 0, 0, 1, true)); + visited[0][0] = 0; + + while (!q.isEmpty()) { + Node cur = q.poll(); + + if (cur.x == N - 1 && cur.y == M - 1) { + bw.write(cur.cnt + ""); + return; + } + + for (int d = 0; d < 4; d++) { + int nx = cur.x + dx[d]; + int ny = cur.y + dy[d]; + + if (OOB(nx, ny) || visited[nx][ny] <= cur.k) continue; + + if (matrix[nx][ny] == '0') { + visited[nx][ny] = cur.k; + q.offer(new Node(nx, ny, cur.k, cur.cnt + 1, !cur.isDay)); + } else if (cur.k < K && visited[nx][ny] > cur.k + 1) { + if (cur.isDay) { + visited[nx][ny] = cur.k + 1; + q.offer(new Node(nx, ny, cur.k + 1, cur.cnt + 1, false)); + } else { + q.offer(new Node(cur.x, cur.y, cur.k, cur.cnt + 1, true)); + } + } + } + } + bw.write("-1"); + } + + private static boolean OOB(int x, int y) { + return x < 0 || N <= x || y < 0 || M <= y; + } + +} +``` \ No newline at end of file