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Submission #1036340

# Submission time Handle Problem Language Result Execution time Memory
1036340 2024-07-27T09:27:22 Z juicy Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 18 ms 4256 KB 
#include <bits/stdc++.h>

using namespace std;

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

const int N = 505;
const int dx[] = {-1, 0, 1, 0}, dy[] = {0, 1, 0, -1};

int n, m;
int d[N][N];
char a[N][N];
bool vis[N][N];

bool inside(int i, int j) {
  return 1 <= i && i <= n && 1 <= j && j <= m && !vis[i][j];
}

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

  cin >> n >> m;
  map<char, int> mp = {{'N', 0}, {'E', 1}, {'S', 2}, {'W', 3}};
  for (int i = 1; i <= n; ++i) {
    for (int j = 1; j <= m; ++j) {
      cin >> a[i][j];
    }
  }
  auto add = [&](int u, int i) {
    if ((u += i) >= 4) {
      u -= 4;
    }
    if (u < 0) {
      u += 4;
    }
    return u;
  };
  memset(d, 0x3f, sizeof(d));
  array<queue<array<int, 2>>, 4> q;
  q[0].push({1, 1});
  d[1][1] = 0;
  int sz = 1, it = 0;
  while (sz) {
    while (!q[it].size()) {
      it = add(it, 1);
    }
    auto [u, v] = q[it].front(); q[it].pop(); --sz;
    if (vis[u][v]) {
      continue;
    }
    vis[u][v] = 1;
    if (a[u][v] != 'X') {
      int p = mp[a[u][v]];
      for (int dr = 0; dr < 4; ++dr) {
        int x = u + dx[dr], y = v + dy[dr];
        if (inside(x, y)) {
          int w = add(dr, -p);
          d[x][y] = min(d[x][y], d[u][v] + w);
          q[add(it, w)].push({x, y}); ++sz;
        }
      }
    }
  }
  cout << (d[n][m] < 1e9 ? d[n][m] : -1);
  return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1372 KB Output is correct
2 Correct 1 ms 1372 KB Output is correct
3 Correct 1 ms 1232 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 1 ms 1372 KB Output is correct
6 Correct 1 ms 1372 KB Output is correct
7 Correct 1 ms 1236 KB Output is correct
8 Correct 1 ms 1372 KB Output is correct
9 Correct 1 ms 1372 KB Output is correct
10 Correct 1 ms 1372 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1372 KB Output is correct
2 Correct 1 ms 1372 KB Output is correct
3 Correct 1 ms 1232 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 1 ms 1372 KB Output is correct
6 Correct 1 ms 1372 KB Output is correct
7 Correct 1 ms 1236 KB Output is correct
8 Correct 1 ms 1372 KB Output is correct
9 Correct 1 ms 1372 KB Output is correct
10 Correct 1 ms 1372 KB Output is correct
11 Correct 1 ms 1372 KB Output is correct
12 Correct 1 ms 1372 KB Output is correct
13 Correct 1 ms 1372 KB Output is correct
14 Correct 1 ms 1372 KB Output is correct
15 Correct 1 ms 1240 KB Output is correct
16 Correct 1 ms 1432 KB Output is correct
17 Correct 1 ms 1372 KB Output is correct
18 Correct 1 ms 1372 KB Output is correct
19 Correct 1 ms 1372 KB Output is correct
20 Correct 1 ms 1372 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1372 KB Output is correct
2 Correct 1 ms 1372 KB Output is correct
3 Correct 1 ms 1372 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1372 KB Output is correct
2 Correct 1 ms 1372 KB Output is correct
3 Correct 1 ms 1372 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 1 ms 1372 KB Output is correct
6 Correct 1 ms 1372 KB Output is correct
7 Correct 1 ms 1376 KB Output is correct
8 Correct 1 ms 1372 KB Output is correct
9 Correct 1 ms 1376 KB Output is correct
10 Correct 1 ms 1376 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1372 KB Output is correct
2 Correct 1 ms 1372 KB Output is correct
3 Correct 1 ms 1232 KB Output is correct
4 Correct 1 ms 1372 KB Output is correct
5 Correct 1 ms 1372 KB Output is correct
6 Correct 1 ms 1372 KB Output is correct
7 Correct 1 ms 1236 KB Output is correct
8 Correct 1 ms 1372 KB Output is correct
9 Correct 1 ms 1372 KB Output is correct
10 Correct 1 ms 1372 KB Output is correct
11 Correct 1 ms 1372 KB Output is correct
12 Correct 1 ms 1372 KB Output is correct
13 Correct 1 ms 1372 KB Output is correct
14 Correct 1 ms 1372 KB Output is correct
15 Correct 1 ms 1240 KB Output is correct
16 Correct 1 ms 1432 KB Output is correct
17 Correct 1 ms 1372 KB Output is correct
18 Correct 1 ms 1372 KB Output is correct
19 Correct 1 ms 1372 KB Output is correct
20 Correct 1 ms 1372 KB Output is correct
21 Correct 1 ms 1372 KB Output is correct
22 Correct 1 ms 1372 KB Output is correct
23 Correct 1 ms 1372 KB Output is correct
24 Correct 1 ms 1372 KB Output is correct
25 Correct 1 ms 1372 KB Output is correct
26 Correct 1 ms 1372 KB Output is correct
27 Correct 1 ms 1372 KB Output is correct
28 Correct 1 ms 1372 KB Output is correct
29 Correct 1 ms 1372 KB Output is correct
30 Correct 1 ms 1372 KB Output is correct
31 Correct 1 ms 1376 KB Output is correct
32 Correct 1 ms 1372 KB Output is correct
33 Correct 1 ms 1376 KB Output is correct
34 Correct 1 ms 1376 KB Output is correct
35 Correct 2 ms 1376 KB Output is correct
36 Correct 1 ms 1372 KB Output is correct
37 Correct 3 ms 1564 KB Output is correct
38 Correct 1 ms 1628 KB Output is correct
39 Correct 18 ms 2084 KB Output is correct
40 Correct 18 ms 2020 KB Output is correct
41 Correct 3 ms 1880 KB Output is correct
42 Correct 18 ms 2108 KB Output is correct
43 Correct 16 ms 4256 KB Output is correct
44 Correct 3 ms 1908 KB Output is correct