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Submission #999839

# Submission time Handle Problem Language Result Execution time Memory
999839 2024-06-16T07:26:02 Z vjudge1 Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 191 ms 81056 KB 
#pragma GCC optimize("Ofast")
#include"bits/stdc++.h"

#define int long long

using namespace std;

const int sz = 5e2 + 10;

vector<vector<int>> aj[sz * sz];
char ad[] = {'N', 'S', 'W', 'E'};
int dx[] = {-1, 1, 0, 0};
int dy[] = {0, 0, -1, 1};
int dis[sz * sz];
bool vi[sz * sz];
char g[sz][sz];
int m, n;

bool leg(int i, int j) {
    return 0 < i && 0 < j && i <= m && j <= n;
}

void dij(int i) {
    priority_queue<vector<int>> pq;
    pq.push({0, i});

    while (!pq.empty()) {
        vector<int> f = pq.top();
        pq.pop();
        if (vi[f[1]]) continue;
        for (vector<int> u : aj[f[1]]) {
            if (vi[u[1]]) continue;
            pq.push({f[0] + u[0], u[1]});
            dis[u[1]] = max(dis[u[1]], f[0] + u[0]);
            // if (u[1] == 1506) {
            //     cout << dis[u[1]] << ' ' << f[1] << ' ' << f[0] << ' ' << u[0] << '\n';
            // }
        }
        vi[f[1]] = true;
    }
}

signed main() {
    cin.tie(nullptr)->sync_with_stdio(false);

    map <char, int> cd;
    cd['W'] = 1, cd['N'] = 2, cd['E'] = 3, cd['S'] = 4;

    cin >> m >> n;

    for (int i = 1; i <= m; i ++) {
        for (int j = 1; j <= n; j ++) {
            cin >> g[i][j];
        }
    }

    for (int i = 1; i <= m; i ++) {
        for (int j = 1; j <= n; j ++) {
            if ('X' == g[i][j]) continue;
            for (int u = 0; u < 4; u ++) {
                int dxx = i + dx[u];
                int dyy = j + dy[u];
                if (leg(dxx, dyy)) {
                    // int ds = (cd[g[i][j]] + 4 - cd[ad[u]]) % 4;
                    int ds = 0;
                    if (cd[g[i][j]] <= cd[ad[u]]) {
                        ds = cd[ad[u]] - cd[g[i][j]];
                    } else {
                        // cout << cd[a[u]] << ' ' << cd[g[i][j]] ;
                        ds = 4 - cd[g[i][j]] + cd[ad[u]];
                    }
                    // cout << i * 501 + j << ' ' << dxx * 501 + dyy << ' ' << ds << ' ' << g[i][j] << ' ' << ad[u] << '\n';
                    aj[i * 501 + j].push_back({-ds, dxx * 501 + dyy});
                }
            }
        }
    }

    fill_n(dis, m * 501 + n + 10, INT_MIN);

    dij(502);

    int r = dis[m * 501 + n];

    if (r == INT_MIN) {
        cout << "-1\n";
        return 0;
    }

    cout << -r << '\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8792 KB Output is correct
2 Correct 2 ms 8808 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct
10 Correct 2 ms 8796 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8792 KB Output is correct
2 Correct 2 ms 8808 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct
10 Correct 2 ms 8796 KB Output is correct
11 Correct 2 ms 8796 KB Output is correct
12 Correct 2 ms 8796 KB Output is correct
13 Correct 2 ms 8796 KB Output is correct
14 Correct 2 ms 8796 KB Output is correct
15 Correct 2 ms 8792 KB Output is correct
16 Correct 2 ms 8796 KB Output is correct
17 Correct 2 ms 8796 KB Output is correct
18 Correct 2 ms 8796 KB Output is correct
19 Correct 2 ms 8796 KB Output is correct
20 Correct 2 ms 8796 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 3 ms 8796 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9052 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 3 ms 8796 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 2 ms 9052 KB Output is correct
6 Correct 2 ms 9052 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8792 KB Output is correct
10 Correct 2 ms 8796 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8792 KB Output is correct
2 Correct 2 ms 8808 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct
10 Correct 2 ms 8796 KB Output is correct
11 Correct 2 ms 8796 KB Output is correct
12 Correct 2 ms 8796 KB Output is correct
13 Correct 2 ms 8796 KB Output is correct
14 Correct 2 ms 8796 KB Output is correct
15 Correct 2 ms 8792 KB Output is correct
16 Correct 2 ms 8796 KB Output is correct
17 Correct 2 ms 8796 KB Output is correct
18 Correct 2 ms 8796 KB Output is correct
19 Correct 2 ms 8796 KB Output is correct
20 Correct 2 ms 8796 KB Output is correct
21 Correct 2 ms 8796 KB Output is correct
22 Correct 2 ms 8796 KB Output is correct
23 Correct 3 ms 8796 KB Output is correct
24 Correct 2 ms 8796 KB Output is correct
25 Correct 3 ms 9052 KB Output is correct
26 Correct 2 ms 8796 KB Output is correct
27 Correct 3 ms 8796 KB Output is correct
28 Correct 2 ms 8796 KB Output is correct
29 Correct 2 ms 9052 KB Output is correct
30 Correct 2 ms 9052 KB Output is correct
31 Correct 2 ms 8796 KB Output is correct
32 Correct 2 ms 8796 KB Output is correct
33 Correct 2 ms 8792 KB Output is correct
34 Correct 2 ms 8796 KB Output is correct
35 Correct 15 ms 13260 KB Output is correct
36 Correct 3 ms 9308 KB Output is correct
37 Correct 18 ms 13828 KB Output is correct
38 Correct 12 ms 16728 KB Output is correct
39 Correct 180 ms 56564 KB Output is correct
40 Correct 167 ms 56144 KB Output is correct
41 Correct 59 ms 55892 KB Output is correct
42 Correct 168 ms 56148 KB Output is correct
43 Correct 191 ms 81056 KB Output is correct
44 Correct 60 ms 55888 KB Output is correct