oj.uz

Submission #581667

# Submission time Handle Problem Language Result Execution time Memory
581667 2022-06-23T02:34:50 Z DylanSmith Mecho (IOI09_mecho) Java 11
4 / 100
 230 ms 28160 KB 
import java.util.*;
import java.io.*;
public class mecho {
    public static void main(String[] args) throws IOException {
        Reader in = new Reader();
        PrintWriter out = new PrintWriter(System.out);
        
        int N = in.nextInt(), K = in.nextInt();
        char[][] mat = new char[N][N];
        for (int i = 0; i < N; i++) {
            mat[i] = in.next().toCharArray();
        }
        Queue<int[]> q = new LinkedList<>();
        int[][] bee = new int[N][N];
        int[] start = new int[2], end = new int[2];
        for (int i = 0; i < N; i++) {
            for (int j = 0; j < N; j++) {
                if (mat[i][j] == 'H') {
                    bee[i][j] = 0;
                    q.offer(new int[]{i, j});
                } else {
                    bee[i][j] = -1;
                }
                if (mat[i][j] == 'M') {
                    start = new int[]{i, j};
                }
                if (mat[i][j] == 'D') {
                    end = new int[]{i, j};
                }
            }
        }
        int[] x = new int[]{-1, 1, 0, 0}, y = new int[]{0, 0, -1, 1};
        while (!q.isEmpty()) {
            int[] current = q.poll();
            int r = current[0], c = current[1];
            for (int k = 0; k < 4; k++) {
                int r2 = r + x[k], c2 = c + y[k];
                if (r2 >= 0 && r2 < N && c2 >= 0 && c2 < N) {
                    if (mat[r2][c2] != 'D' && mat[r2][c2] != 'G' && bee[r2][c2] == -1) {
                        bee[r2][c2] = bee[r][c] + 1;
                        q.offer(new int[]{r2, c2});
                    }
                }
            }
        }
        out.println(search(mat, bee, start, end, K, 0, N * N));
        
        out.close();
    }
    public static int search(char[][] mat, int[][] bee, int[] start, int[] end, int K, int l, int r) {
        if (l > r) {
            return -1;
        }
        int mid = (l + r) / 2;
        if (check(mat, bee, start, end, K, mid)) {
            int m = search(mat, bee, start, end, K, mid + 1, r);
            if (m == -1) {
                return mid;
            }
            return m;
        }
        return search(mat, bee, start, end, K, l, mid - 1);
    }
    public static boolean check(char[][] mat, int[][] bee, int[] start, int[] end, int K, int eat) {
        int N = mat.length;
        int[][] dist = new int[N][N];
        for (int i = 0; i < N; i++) {
            Arrays.fill(dist[i], -1);
        }
        dist[start[0]][start[1]] = 0;
        Queue<int[]> q = new LinkedList<>();
        q.offer(start);
        int[] x = new int[]{-1, 1, 0, 0}, y = new int[]{0, 0, -1, 1};
        while (!q.isEmpty()) {
            int[] current = q.poll();
            int r = current[0], c = current[1];
            for (int k = 0; k < 4; k++) {
                int r2 = r + x[k], c2 = c + y[k];
                if (r2 >= 0 && r2 < N && c2 >= 0 && c2 < N) {
                    if (mat[r2][c2] != 'T' && mat[r2][c2] != 'H' && dist[r2][c2] == -1) {
                        if (mat[r2][c2] == 'D' || (dist[r][c] + 1) / K + eat < bee[r2][c2]) {
                            dist[r2][c2] = dist[r][c] + 1;
                            q.offer(new int[]{r2, c2});
                        }
                    }
                }
            }
        }
        return dist[end[0]][end[1]] >= 0;
    }
    static class Reader {
        BufferedInputStream in;
        public Reader() {
            in = new BufferedInputStream(System.in);
        }
        public String nextLine() throws IOException {
            int c;
            StringBuilder sb = new StringBuilder("");
            while ((c = in.read()) != '\n')
                sb.append((char)(c));
            return sb.toString();
        }
        public String next() throws IOException {
            int c;
            StringBuilder sb = new StringBuilder("");
            while ((c = in.read()) != ' ' && c != '\n')
                sb.append((char)(c));
            return sb.toString();
        }
        public int nextInt() throws IOException {
            return (int)nextLong();
        }
        public long nextLong() throws IOException {
            int c;
            long res = 0;
            boolean start = false, negative = false;
            while ((c = in.read()) != ' ' && c != '\n' || !start)
                if (c >= '0' && c <= '9' || c == '-') {
                    start = true;
                    if (c == '-')
                        negative = true;
                    else
                        res = res * 10 + c - '0';
                }
            return res * (negative ? -1 : 1);
        }
    }
    public static void sort(int[] arr) {
        List<Integer> list = new ArrayList<>();
        for (int i : arr) {
            list.add(i);
        }
        Collections.sort(list);
        for (int i = 0; i < arr.length; i++) {
            arr[i] = list.get(i);
        }
    }
}

Subtask #1
4.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 58 ms 8452 KB Output isn't correct
2 Incorrect 58 ms 8248 KB Output isn't correct
3 Incorrect 59 ms 8348 KB Output isn't correct
4 Incorrect 61 ms 8312 KB Output isn't correct
5 Incorrect 59 ms 8576 KB Output isn't correct
6 Incorrect 62 ms 8152 KB Output isn't correct
7 Incorrect 215 ms 27740 KB Output isn't correct
8 Correct 61 ms 8328 KB Output is correct
9 Incorrect 59 ms 8268 KB Output isn't correct
10 Incorrect 60 ms 8360 KB Output isn't correct
11 Incorrect 59 ms 8560 KB Output isn't correct
12 Incorrect 69 ms 8392 KB Output isn't correct
13 Incorrect 72 ms 8624 KB Output isn't correct
14 Correct 67 ms 8360 KB Output is correct
15 Incorrect 61 ms 8304 KB Output isn't correct
16 Incorrect 60 ms 8348 KB Output isn't correct
17 Incorrect 59 ms 8348 KB Output isn't correct
18 Incorrect 58 ms 8460 KB Output isn't correct
19 Incorrect 63 ms 8544 KB Output isn't correct
20 Incorrect 63 ms 8416 KB Output isn't correct
21 Incorrect 65 ms 8520 KB Output isn't correct
22 Incorrect 63 ms 8460 KB Output isn't correct
23 Incorrect 66 ms 8480 KB Output isn't correct
24 Incorrect 64 ms 8628 KB Output isn't correct
25 Incorrect 65 ms 8508 KB Output isn't correct
26 Incorrect 64 ms 8476 KB Output isn't correct
27 Incorrect 69 ms 8732 KB Output isn't correct
28 Incorrect 63 ms 8532 KB Output isn't correct
29 Incorrect 70 ms 8556 KB Output isn't correct
30 Incorrect 69 ms 8704 KB Output isn't correct
31 Incorrect 68 ms 8676 KB Output isn't correct
32 Incorrect 66 ms 8600 KB Output isn't correct
33 Incorrect 134 ms 14244 KB Output isn't correct
34 Incorrect 170 ms 14460 KB Output isn't correct
35 Incorrect 145 ms 14416 KB Output isn't correct
36 Incorrect 125 ms 14952 KB Output isn't correct
37 Incorrect 147 ms 15224 KB Output isn't correct
38 Incorrect 128 ms 15112 KB Output isn't correct
39 Incorrect 128 ms 15540 KB Output isn't correct
40 Incorrect 142 ms 15532 KB Output isn't correct
41 Incorrect 140 ms 15396 KB Output isn't correct
42 Incorrect 135 ms 17516 KB Output isn't correct
43 Incorrect 169 ms 17784 KB Output isn't correct
44 Incorrect 142 ms 17624 KB Output isn't correct
45 Incorrect 141 ms 19328 KB Output isn't correct
46 Incorrect 154 ms 19172 KB Output isn't correct
47 Incorrect 141 ms 19480 KB Output isn't correct
48 Incorrect 168 ms 20376 KB Output isn't correct
49 Incorrect 178 ms 20316 KB Output isn't correct
50 Incorrect 165 ms 20304 KB Output isn't correct
51 Incorrect 170 ms 19564 KB Output isn't correct
52 Incorrect 179 ms 19560 KB Output isn't correct
53 Incorrect 179 ms 20760 KB Output isn't correct
54 Incorrect 170 ms 23440 KB Output isn't correct
55 Incorrect 190 ms 23592 KB Output isn't correct
56 Incorrect 176 ms 24356 KB Output isn't correct
57 Incorrect 179 ms 24300 KB Output isn't correct
58 Incorrect 200 ms 22720 KB Output isn't correct
59 Incorrect 188 ms 25572 KB Output isn't correct
60 Incorrect 193 ms 27332 KB Output isn't correct
61 Incorrect 188 ms 27656 KB Output isn't correct
62 Incorrect 179 ms 27132 KB Output isn't correct
63 Incorrect 176 ms 27316 KB Output isn't correct
64 Incorrect 174 ms 27296 KB Output isn't correct
65 Incorrect 173 ms 27388 KB Output isn't correct
66 Incorrect 177 ms 27128 KB Output isn't correct
67 Correct 176 ms 27156 KB Output is correct
68 Incorrect 206 ms 27336 KB Output isn't correct
69 Incorrect 219 ms 27940 KB Output isn't correct
70 Incorrect 208 ms 27832 KB Output isn't correct
71 Incorrect 206 ms 28036 KB Output isn't correct
72 Incorrect 216 ms 27144 KB Output isn't correct
73 Incorrect 204 ms 27392 KB Output isn't correct
74 Incorrect 224 ms 27456 KB Output isn't correct
75 Incorrect 209 ms 27672 KB Output isn't correct
76 Incorrect 209 ms 27664 KB Output isn't correct
77 Incorrect 210 ms 27716 KB Output isn't correct
78 Correct 215 ms 27924 KB Output is correct
79 Incorrect 230 ms 27876 KB Output isn't correct
80 Incorrect 223 ms 27868 KB Output isn't correct
81 Incorrect 218 ms 28008 KB Output isn't correct
82 Incorrect 217 ms 27796 KB Output isn't correct
83 Incorrect 215 ms 27976 KB Output isn't correct
84 Incorrect 219 ms 28036 KB Output isn't correct
85 Incorrect 223 ms 28060 KB Output isn't correct
86 Incorrect 198 ms 28100 KB Output isn't correct
87 Incorrect 219 ms 27840 KB Output isn't correct
88 Incorrect 224 ms 27368 KB Output isn't correct
89 Incorrect 222 ms 28160 KB Output isn't correct
90 Incorrect 218 ms 28072 KB Output isn't correct
91 Incorrect 215 ms 28104 KB Output isn't correct
92 Incorrect 215 ms 28060 KB Output isn't correct