oj.uz

Submission #828002

# Submission time Handle Problem Language Result Execution time Memory
828002 2023-08-17T01:09:54 Z null_awe Maze (JOI23_ho_t3) C++14
8 / 100
 94 ms 18688 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define pii pair<int, int>

vector<int> dx = {-1, 1, 0, 0}, dy = {0, 0, -1, 1};

int main() {
  ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
  int r, c, n; cin >> r >> c >> n;
  int sx, sy; cin >> sx >> sy; --sx, --sy;
  int gx, gy; cin >> gx >> gy; --gx, --gy;
  vector<string> arr(r);
  for (int i = 0; i < r; ++i) cin >> arr[i];
  // . = empty
  // # = wall
  vector<vector<bool>> vis(r, vector<bool>(c));
  vis[sx][sy] = true;
  vector<pii> q; q.push_back({sx, sy});
  queue<pii> rq; for (pii _p : q) rq.push(_p);
  while (rq.size()) {
    pii front = rq.front(); rq.pop();
    int xx = front.first, yy = front.second;
    for (int d = 0; d < 4; ++d) {
      int nx = xx + dx[d], ny = yy + dy[d];
      if (nx < 0 || ny < 0 || nx >= r || ny >= c) continue;
      if (arr[nx][ny] == '#' || vis[nx][ny]) continue;
      rq.push({nx, ny});
      q.push_back({nx, ny});
      vis[nx][ny] = true;
    }
  }
  if (vis[gx][gy]) {
    cout << 0 << '\n';
    return 0;
  }
  vector<vector<int>> dists(r, vector<int>(c));
  for (int dist = 1;; ++dist) {
    if (!q.size()) break;
    // cout << "here" << endl;
    vector<pii> nq;
    queue<pii> rq; for (pii _p : q) rq.push(_p), dists[_p.first][_p.second] = 0;
    while (rq.size()) {
      pii front = rq.front(); rq.pop();
      int xx = front.first, yy = front.second;
      for (int d = 0; d < 4; ++d) {
        int nx = xx + dx[d], ny = yy + dy[d];
        if (nx < 0 || ny < 0 || nx >= r || ny >= c) continue;
        if (vis[nx][ny]) continue;
        vis[nx][ny] = true;
        dists[nx][ny] = dists[xx][yy] + 1;
        if (dists[nx][ny] < 2 * n - 1) rq.push({nx, ny});
        nq.push_back({nx, ny});
      }
    }
    for (pii _p : nq) rq.push(_p);
    while (rq.size()) {
      pii front = rq.front(); rq.pop();
      int xx = front.first, yy = front.second;
      // cout << xx << ' ' << yy << endl;
      for (int d = 0; d < 4; ++d) {
        int nx = xx + dx[d], ny = yy + dy[d];
        if (nx < 0 || ny < 0 || nx >= r || ny >= c) continue;
        if (arr[nx][ny] == '#' || vis[nx][ny]) continue;
        rq.push({nx, ny});
        nq.push_back({nx, ny});
        vis[nx][ny] = true;
      }
    }
    if (vis[gx][gy]) {
      cout << dist << '\n';
      return 0;
    }
    q = nq;
  }
  return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 236 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 3 ms 596 KB Output is correct
20 Correct 3 ms 724 KB Output is correct
21 Correct 2 ms 976 KB Output is correct
22 Correct 4 ms 724 KB Output is correct
23 Correct 3 ms 596 KB Output is correct
24 Correct 2 ms 852 KB Output is correct
25 Correct 3 ms 852 KB Output is correct
26 Correct 1 ms 724 KB Output is correct
27 Correct 1 ms 724 KB Output is correct
28 Correct 2 ms 596 KB Output is correct
29 Correct 7 ms 1108 KB Output is correct
30 Correct 3 ms 724 KB Output is correct
31 Correct 5 ms 2632 KB Output is correct
32 Correct 9 ms 1272 KB Output is correct
33 Correct 6 ms 1108 KB Output is correct
34 Correct 6 ms 1760 KB Output is correct
35 Correct 10 ms 1740 KB Output is correct
36 Correct 7 ms 1548 KB Output is correct
37 Correct 8 ms 1364 KB Output is correct
38 Correct 1 ms 1108 KB Output is correct
39 Correct 73 ms 8168 KB Output is correct
40 Correct 3 ms 1236 KB Output is correct
41 Correct 4 ms 2016 KB Output is correct
42 Correct 12 ms 1364 KB Output is correct
43 Correct 12 ms 2132 KB Output is correct
44 Correct 17 ms 4692 KB Output is correct
45 Correct 20 ms 4976 KB Output is correct
46 Correct 46 ms 18688 KB Output is correct
47 Correct 94 ms 8456 KB Output is correct
48 Correct 51 ms 8168 KB Output is correct
49 Correct 38 ms 13816 KB Output is correct
50 Correct 60 ms 13816 KB Output is correct
51 Correct 72 ms 10820 KB Output is correct
52 Correct 51 ms 9160 KB Output is correct
53 Correct 58 ms 8288 KB Output is correct

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Incorrect 1 ms 212 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Incorrect 1 ms 212 KB Output isn't correct
17 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Incorrect 1 ms 212 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Incorrect 1 ms 212 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 236 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 3 ms 596 KB Output is correct
20 Correct 3 ms 724 KB Output is correct
21 Correct 2 ms 976 KB Output is correct
22 Correct 4 ms 724 KB Output is correct
23 Correct 3 ms 596 KB Output is correct
24 Correct 2 ms 852 KB Output is correct
25 Correct 3 ms 852 KB Output is correct
26 Correct 1 ms 724 KB Output is correct
27 Correct 1 ms 724 KB Output is correct
28 Correct 2 ms 596 KB Output is correct
29 Correct 7 ms 1108 KB Output is correct
30 Correct 3 ms 724 KB Output is correct
31 Correct 5 ms 2632 KB Output is correct
32 Correct 9 ms 1272 KB Output is correct
33 Correct 6 ms 1108 KB Output is correct
34 Correct 6 ms 1760 KB Output is correct
35 Correct 10 ms 1740 KB Output is correct
36 Correct 7 ms 1548 KB Output is correct
37 Correct 8 ms 1364 KB Output is correct
38 Correct 1 ms 1108 KB Output is correct
39 Correct 73 ms 8168 KB Output is correct
40 Correct 3 ms 1236 KB Output is correct
41 Correct 4 ms 2016 KB Output is correct
42 Correct 12 ms 1364 KB Output is correct
43 Correct 12 ms 2132 KB Output is correct
44 Correct 17 ms 4692 KB Output is correct
45 Correct 20 ms 4976 KB Output is correct
46 Correct 46 ms 18688 KB Output is correct
47 Correct 94 ms 8456 KB Output is correct
48 Correct 51 ms 8168 KB Output is correct
49 Correct 38 ms 13816 KB Output is correct
50 Correct 60 ms 13816 KB Output is correct
51 Correct 72 ms 10820 KB Output is correct
52 Correct 51 ms 9160 KB Output is correct
53 Correct 58 ms 8288 KB Output is correct
54 Correct 0 ms 212 KB Output is correct
55 Correct 0 ms 212 KB Output is correct
56 Correct 0 ms 212 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Incorrect 1 ms 212 KB Output isn't correct
62 Halted 0 ms 0 KB -

Subtask #7
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 236 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 3 ms 596 KB Output is correct
20 Correct 3 ms 724 KB Output is correct
21 Correct 2 ms 976 KB Output is correct
22 Correct 4 ms 724 KB Output is correct
23 Correct 3 ms 596 KB Output is correct
24 Correct 2 ms 852 KB Output is correct
25 Correct 3 ms 852 KB Output is correct
26 Correct 1 ms 724 KB Output is correct
27 Correct 1 ms 724 KB Output is correct
28 Correct 2 ms 596 KB Output is correct
29 Correct 7 ms 1108 KB Output is correct
30 Correct 3 ms 724 KB Output is correct
31 Correct 5 ms 2632 KB Output is correct
32 Correct 9 ms 1272 KB Output is correct
33 Correct 6 ms 1108 KB Output is correct
34 Correct 6 ms 1760 KB Output is correct
35 Correct 10 ms 1740 KB Output is correct
36 Correct 7 ms 1548 KB Output is correct
37 Correct 8 ms 1364 KB Output is correct
38 Correct 1 ms 1108 KB Output is correct
39 Correct 73 ms 8168 KB Output is correct
40 Correct 3 ms 1236 KB Output is correct
41 Correct 4 ms 2016 KB Output is correct
42 Correct 12 ms 1364 KB Output is correct
43 Correct 12 ms 2132 KB Output is correct
44 Correct 17 ms 4692 KB Output is correct
45 Correct 20 ms 4976 KB Output is correct
46 Correct 46 ms 18688 KB Output is correct
47 Correct 94 ms 8456 KB Output is correct
48 Correct 51 ms 8168 KB Output is correct
49 Correct 38 ms 13816 KB Output is correct
50 Correct 60 ms 13816 KB Output is correct
51 Correct 72 ms 10820 KB Output is correct
52 Correct 51 ms 9160 KB Output is correct
53 Correct 58 ms 8288 KB Output is correct
54 Correct 0 ms 212 KB Output is correct
55 Correct 0 ms 212 KB Output is correct
56 Correct 0 ms 212 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Incorrect 1 ms 212 KB Output isn't correct
62 Halted 0 ms 0 KB -

Subtask #8
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 236 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 3 ms 596 KB Output is correct
20 Correct 3 ms 724 KB Output is correct
21 Correct 2 ms 976 KB Output is correct
22 Correct 4 ms 724 KB Output is correct
23 Correct 3 ms 596 KB Output is correct
24 Correct 2 ms 852 KB Output is correct
25 Correct 3 ms 852 KB Output is correct
26 Correct 1 ms 724 KB Output is correct
27 Correct 1 ms 724 KB Output is correct
28 Correct 2 ms 596 KB Output is correct
29 Correct 7 ms 1108 KB Output is correct
30 Correct 3 ms 724 KB Output is correct
31 Correct 5 ms 2632 KB Output is correct
32 Correct 9 ms 1272 KB Output is correct
33 Correct 6 ms 1108 KB Output is correct
34 Correct 6 ms 1760 KB Output is correct
35 Correct 10 ms 1740 KB Output is correct
36 Correct 7 ms 1548 KB Output is correct
37 Correct 8 ms 1364 KB Output is correct
38 Correct 1 ms 1108 KB Output is correct
39 Correct 73 ms 8168 KB Output is correct
40 Correct 3 ms 1236 KB Output is correct
41 Correct 4 ms 2016 KB Output is correct
42 Correct 12 ms 1364 KB Output is correct
43 Correct 12 ms 2132 KB Output is correct
44 Correct 17 ms 4692 KB Output is correct
45 Correct 20 ms 4976 KB Output is correct
46 Correct 46 ms 18688 KB Output is correct
47 Correct 94 ms 8456 KB Output is correct
48 Correct 51 ms 8168 KB Output is correct
49 Correct 38 ms 13816 KB Output is correct
50 Correct 60 ms 13816 KB Output is correct
51 Correct 72 ms 10820 KB Output is correct
52 Correct 51 ms 9160 KB Output is correct
53 Correct 58 ms 8288 KB Output is correct
54 Correct 0 ms 212 KB Output is correct
55 Correct 0 ms 212 KB Output is correct
56 Correct 0 ms 212 KB Output is correct
57 Correct 0 ms 212 KB Output is correct
58 Correct 0 ms 212 KB Output is correct
59 Correct 0 ms 212 KB Output is correct
60 Correct 0 ms 212 KB Output is correct
61 Incorrect 1 ms 212 KB Output isn't correct
62 Halted 0 ms 0 KB -