oj.uz

Submission #1079750

# Submission time Handle Problem Language Result Execution time Memory
1079750 2024-08-29T00:35:15 Z juicy Mecho (IOI09_mecho) C++17
38 / 100
 74 ms 9816 KB 
#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

const int dx[] = {-1, 0, 1, 0};
const int dy[] = {0, -1, 0, 1};

int main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);  

  int n, k; cin >> n >> k;
  vector a(n, vector<char>(n));
  vector ma(n, vector<int>(n, -1)), d(n, vector<int>(n, -1)), c(n, vector<int>(n, -1));
  queue<array<int, 2>> q;
  array<int, 2> s{}, t{};
  for (int i = 0; i < n; ++i) {
    for (int j = 0; j < n; ++j) {
      cin >> a[i][j];
      if (a[i][j] == 'H') {
        q.push({i, j});
        d[i][j] = 0;
      } else if (a[i][j] == 'M') {
        s = {i, j};
      } else if (a[i][j] == 'D') {
        t = {i, j};
      }
    }
  }
  auto inside = [&](int i, int j) {
    return 0 <= i && i < n && 0 <= j && j < n;
  };
  auto bfs = [&](vector<vector<int>> &d) {
    while (q.size()) {
      auto [i, j] = q.front(); q.pop();
      for (int dr = 0; dr < 4; ++dr) {
        int u = i + dx[dr], v = j + dy[dr];
        if (inside(u, v) && a[u][v] != 'T' && a[u][v] != 'H' && d[u][v] == -1) {
          d[u][v] = d[i][j] + 1;
          q.push({u, v});
        }
      }
    } 
  };
  bfs(d);
  c[s[0]][s[1]] = 0;
  q.push(s);
  bfs(c);
  ma[s[0]][s[1]] = 1e9;
  q.push(s);
  d[t[0]][t[1]] = 1e9;
  vector vis(n, vector<bool>(n));
  vis[s[0]][s[1]] = 1;
  while (q.size()) {
    auto [i, j] = q.front(); q.pop();
    ma[i][j] = max(-1, min(ma[i][j], d[i][j] - (c[i][j] + k - 1) / k));
    for (int dr = 0; dr < 4; ++dr) {
      int u = i + dx[dr], v = j + dy[dr];
      if (inside(u, v) && a[u][v] != 'T' && a[u][v] != 'H' && c[u][v] == c[i][j] + 1) {
        ma[u][v] = max(ma[u][v], ma[i][j]);
        if (!vis[u][v]) {
          q.push({u, v});
          vis[u][v] = 1;
        }
      }
    }
  } 
  cout << ma[t[0]][t[1]];
  return 0;
}

Subtask #1
38.0 / 100.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Incorrect 1 ms 348 KB Output isn't correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Incorrect 1 ms 344 KB Output isn't correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 600 KB Output is correct
7 Correct 59 ms 9456 KB Output is correct
8 Incorrect 0 ms 348 KB Output isn't correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Incorrect 1 ms 408 KB Output isn't correct
13 Incorrect 1 ms 348 KB Output isn't correct
14 Correct 1 ms 348 KB Output is correct
15 Incorrect 0 ms 348 KB Output isn't correct
16 Correct 0 ms 348 KB Output is correct
17 Incorrect 1 ms 348 KB Output isn't correct
18 Correct 0 ms 348 KB Output is correct
19 Incorrect 0 ms 348 KB Output isn't correct
20 Correct 0 ms 348 KB Output is correct
21 Incorrect 1 ms 344 KB Output isn't correct
22 Correct 1 ms 348 KB Output is correct
23 Incorrect 0 ms 348 KB Output isn't correct
24 Correct 0 ms 348 KB Output is correct
25 Incorrect 1 ms 348 KB Output isn't correct
26 Correct 1 ms 348 KB Output is correct
27 Incorrect 1 ms 348 KB Output isn't correct
28 Correct 0 ms 348 KB Output is correct
29 Incorrect 1 ms 348 KB Output isn't correct
30 Correct 1 ms 348 KB Output is correct
31 Incorrect 1 ms 348 KB Output isn't correct
32 Correct 1 ms 348 KB Output is correct
33 Incorrect 6 ms 2140 KB Output isn't correct
34 Correct 6 ms 2140 KB Output is correct
35 Incorrect 7 ms 2180 KB Output isn't correct
36 Incorrect 8 ms 2652 KB Output isn't correct
37 Correct 7 ms 2712 KB Output is correct
38 Incorrect 10 ms 2652 KB Output isn't correct
39 Incorrect 9 ms 3164 KB Output isn't correct
40 Correct 8 ms 3288 KB Output is correct
41 Incorrect 13 ms 3164 KB Output isn't correct
42 Incorrect 11 ms 3932 KB Output isn't correct
43 Correct 11 ms 3932 KB Output is correct
44 Incorrect 15 ms 3968 KB Output isn't correct
45 Incorrect 12 ms 4700 KB Output isn't correct
46 Correct 12 ms 4696 KB Output is correct
47 Incorrect 19 ms 4680 KB Output isn't correct
48 Incorrect 17 ms 5488 KB Output isn't correct
49 Correct 15 ms 5464 KB Output is correct
50 Incorrect 28 ms 5468 KB Output isn't correct
51 Incorrect 18 ms 6232 KB Output isn't correct
52 Correct 17 ms 6236 KB Output is correct
53 Incorrect 24 ms 6236 KB Output isn't correct
54 Incorrect 21 ms 7260 KB Output isn't correct
55 Correct 19 ms 7512 KB Output is correct
56 Incorrect 32 ms 7260 KB Output isn't correct
57 Incorrect 25 ms 8260 KB Output isn't correct
58 Correct 25 ms 8284 KB Output is correct
59 Incorrect 32 ms 8280 KB Output isn't correct
60 Incorrect 27 ms 9308 KB Output isn't correct
61 Correct 34 ms 9560 KB Output is correct
62 Incorrect 36 ms 9304 KB Output isn't correct
63 Correct 58 ms 9308 KB Output is correct
64 Correct 53 ms 9308 KB Output is correct
65 Correct 58 ms 9344 KB Output is correct
66 Incorrect 61 ms 9304 KB Output isn't correct
67 Correct 56 ms 9344 KB Output is correct
68 Correct 68 ms 9372 KB Output is correct
69 Correct 69 ms 9304 KB Output is correct
70 Correct 62 ms 9308 KB Output is correct
71 Correct 61 ms 9304 KB Output is correct
72 Incorrect 74 ms 9556 KB Output isn't correct
73 Incorrect 52 ms 9564 KB Output isn't correct
74 Correct 66 ms 9564 KB Output is correct
75 Correct 50 ms 9604 KB Output is correct
76 Correct 53 ms 9608 KB Output is correct
77 Correct 54 ms 9816 KB Output is correct
78 Correct 57 ms 9564 KB Output is correct
79 Correct 53 ms 9580 KB Output is correct
80 Correct 53 ms 9560 KB Output is correct
81 Correct 53 ms 9356 KB Output is correct
82 Correct 53 ms 9564 KB Output is correct
83 Correct 62 ms 9304 KB Output is correct
84 Correct 53 ms 9304 KB Output is correct
85 Correct 50 ms 9560 KB Output is correct
86 Correct 49 ms 9564 KB Output is correct
87 Correct 58 ms 9560 KB Output is correct
88 Correct 53 ms 9308 KB Output is correct
89 Correct 53 ms 9308 KB Output is correct
90 Correct 55 ms 9308 KB Output is correct
91 Correct 56 ms 9308 KB Output is correct
92 Correct 49 ms 9304 KB Output is correct