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Submission #287042

# Submission time Handle Problem Language Result Execution time Memory
287042 2020-08-31T09:54:14 Z erray Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 161 ms 14304 KB 
// author: erray
#include<bits/stdc++.h>
 
using namespace std;
 
int main () {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  vector<int> h(256);
  h['X'] = 4;
  h['N'] = 0;
  h['E'] = 1;
  h['S'] = 2;
  h['W'] = 3;
  int n, m;
  cin >> n >> m;
  vector<string> grid(n);
  for (int i = 0; i < n; ++i) {
    cin >> grid[i];
    for (auto& c : grid[i]) {
      c = h[c];  
    }
  }
  vector<vector<int>> cost(n, vector<int>(m, -1));
  struct pqNode {
    int x, y, c;
    bool operator< (const pqNode& ot) const {
      return c > ot.c;
    }
  };
  const int dx[] = {-1, 0, 1, 0}, dy[] = {0, 1, 0, -1};
  priority_queue<pqNode> pq;
  pq.push(pqNode{0, 0, 0});
  while (!pq.empty()) {
    int x = pq.top().x, y = pq.top().y, c = pq.top().c;
    pq.pop();
    if (cost[x][y] != -1) continue;    
    cost[x][y] = c;
    if (grid[x][y] == 4) {
      continue;
    }
    for (int d = 0; d < 4; ++d) {
      int nw = (int) grid[x][y] + d;
      nw %= 4;
      int nx = x + dx[nw], ny = y + dy[nw];
      if (nx < 0 || ny < 0 || nx >= n || ny >= m) continue; 
      pq.push(pqNode{nx, ny, c + d});
    }  
  }
  cout << cost[n - 1][m - 1] << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 0 ms 384 KB Output is correct
14 Correct 0 ms 384 KB Output is correct
15 Correct 0 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 0 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 0 ms 384 KB Output is correct
20 Correct 1 ms 384 KB Output is correct
21 Correct 0 ms 384 KB Output is correct
22 Correct 0 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 0 ms 384 KB Output is correct
25 Correct 1 ms 384 KB Output is correct
26 Correct 1 ms 384 KB Output is correct
27 Correct 1 ms 384 KB Output is correct
28 Correct 0 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 0 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 0 ms 384 KB Output is correct
35 Correct 6 ms 512 KB Output is correct
36 Correct 1 ms 384 KB Output is correct
37 Correct 8 ms 512 KB Output is correct
38 Correct 1 ms 640 KB Output is correct
39 Correct 84 ms 2040 KB Output is correct
40 Correct 82 ms 2040 KB Output is correct
41 Correct 2 ms 1792 KB Output is correct
42 Correct 80 ms 2040 KB Output is correct
43 Correct 161 ms 14304 KB Output is correct
44 Correct 2 ms 1792 KB Output is correct