oj.uz

Submission #841603

# Submission time Handle Problem Language Result Execution time Memory
841603 2023-09-01T18:22:16 Z WLZ Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 72 ms 21792 KB 
#include <bits/stdc++.h>
using namespace std;

const int INF = 0x3f3f3f3f;

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

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  map<char, int> mp;
  mp['N'] = 0;
  mp['E'] = 1;
  mp['S'] = 2;
  mp['W'] = 3;
  int m, n;
  cin >> m >> n;
  auto idx = [n](int i, int j) {
    return i * n + j;
  };
  vector<string> grid(m);
  for (int i = 0; i < m; i++) {
    cin >> grid[i];
  }
  vector< vector< pair<int, int> > > g(m * n);
  for (int i = 0; i < m; i++) {
    for (int j = 0; j < n; j++) {
      if (grid[i][j] == 'X') {
        continue;
      }
      int cur = mp[grid[i][j]];
      int tmp = idx(i, j);
      for (int k = 0; k < 4; k++) {
        int ni = i + dx[cur];
        int nj = j + dy[cur];
        cur++;
        if (cur == 4) {
          cur = 0;
        }
        if (ni < 0 || ni >= m || nj < 0 || nj >= n) {
          continue;
        }
        g[tmp].push_back({idx(ni, nj), k});
      }
    }
  }
  vector<int> dist(m * n, INF);
  dist[0] = 0;
  priority_queue< pair<int, int>, vector< pair<int, int> >, greater< pair<int, int> > > pq;
  pq.push({0, 0});
  while (!pq.empty()) {
    int u = pq.top().second;
    int d = pq.top().first;
    pq.pop();
    if (d > dist[u]) {
      continue;
    }
    for (auto& v : g[u]) {
      if (d + v.second < dist[v.first]) {
        dist[v.first] = d + v.second;
        pq.push({dist[v.first], v.first});
      }
    }
  }
  if (dist[m * n - 1] == INF) {
    cout << -1 << '\n';
    return 0;
  }
  cout << dist[m * n - 1] << '\n';
  return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is 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 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 600 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is 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 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 600 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 5 ms 1884 KB Output is correct
36 Correct 1 ms 604 KB Output is correct
37 Correct 6 ms 2140 KB Output is correct
38 Correct 4 ms 3416 KB Output is correct
39 Correct 56 ms 17268 KB Output is correct
40 Correct 59 ms 17240 KB Output is correct
41 Correct 24 ms 17092 KB Output is correct
42 Correct 57 ms 17492 KB Output is correct
43 Correct 72 ms 21792 KB Output is correct
44 Correct 30 ms 16980 KB Output is correct