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Submission #750330

# Submission time Handle Problem Language Result Execution time Memory
750330 2023-05-29T11:48:03 Z 7as__7 Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 361 ms 86488 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int, int>
#define all(x) x.begin(),x.end()
const int sz = 1e6 + 1, mod = 1e9 + 7, inf = -1e18;
int change(char a, char b) {
    if (a == 'N') {
        int ans = 0;
        if (b == 'N')return ans;
        ans++;
        if (b == 'E')return ans;
        ans++;
        if (b == 'S')return ans;
        ans++;
        if (b == 'W')return ans;
        return ans;
    }
    if (a == 'W') {
        int ans = 0;
        if (b == 'W')return ans;
        ans++;
        if (b == 'N')return ans;
        ans++;
        if (b == 'E')return ans;
        ans++;
        if (b == 'S')return ans;
        return ans;
    }
    if (a == 'S') {
        int ans = 0;
        if (b == 'S')return ans;
        ans++;
        if (b == 'W')return ans;
        ans++;
        if (b == 'N')return ans;
        ans++;
        if (b == 'E')return ans;
        return ans;
    }
    if (a == 'E') {
        int ans = 0;
        if (b == 'E')return ans;
        ans++;
        if (b == 'S')return ans;
        ans++;
        if (b == 'W')return ans;
        ans++;
        if (b == 'N')return ans;
        return ans;
    }
    return 0;
}
signed main()
{
    int n, m;
    cin >> n >> m;
    char a[502][502] = {};
    map<pair<int,int>, int>cost;
    vector<vector<int>>vc(n * m + 1);
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            cin >> a[i][j];
        }
    }
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            if (a[i][j] != 'X' && j > 1) {
                vc[m * (i - 1) + j].push_back(m * (i - 1) + j - 1);
                cost[{m* (i - 1) + j, m* (i - 1) + j - 1}] = change(a[i][j], 'W');
            }
            if (a[i][j] != 'X' && j < m) {
                vc[m * (i - 1) + j].push_back(m * (i - 1) + j + 1);
                cost[{ m * (i - 1) + j,m * (i - 1) + j + 1 }] = change(a[i][j], 'E');
            }
            if (a[i][j] != 'X' && i > 1) {
                vc[m * (i - 1) + j].push_back(m * (i - 2) + j);
                cost[{m* (i - 1) + j,m * (i - 2) + j}] = change(a[i][j], 'N');
            }
            if (a[i][j] != 'X' && i < n) {
                vc[m * (i - 1) + j].push_back(m * (i)+j);
                cost[{m* (i - 1) + j, m* (i)+j}] = change(a[i][j], 'S');
            }
        }
    }
    priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>>pq;
    vector<int>ans(n * m + 1, 1e18);
    ans[1] = 0;
    pq.push({ 0,1 });
    while (!pq.empty()) {
        int u = pq.top().second;
        int cos = pq.top().first;
        //cout << u << ' ' << cos << endl;
        pq.pop();
        if (ans[u] < cos) {
            continue;
        }
        for (auto i : vc[u]) {
            if (cos + cost[{u, i}] < ans[i]) {
                ans[i] = cos + cost[{u, i}];
                pq.push({ ans[i],i });
            }
        }
    }
    if (ans[n * m] == 1e18)ans[n * m] = -1;
    cout << ans[n * m];
    //cout << ans[m * (n - 1) + m];
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 0 ms 468 KB Output is correct
8 Correct 1 ms 564 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 468 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 0 ms 468 KB Output is correct
8 Correct 1 ms 564 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 596 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 0 ms 468 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 0 ms 468 KB Output is correct
3 Correct 1 ms 596 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 0 ms 468 KB Output is correct
8 Correct 1 ms 564 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 596 KB Output is correct
13 Correct 1 ms 596 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 0 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 0 ms 468 KB Output is correct
24 Correct 0 ms 468 KB Output is correct
25 Correct 1 ms 724 KB Output is correct
26 Correct 0 ms 468 KB Output is correct
27 Correct 1 ms 596 KB Output is correct
28 Correct 1 ms 596 KB Output is correct
29 Correct 1 ms 724 KB Output is correct
30 Correct 1 ms 724 KB Output is correct
31 Correct 1 ms 596 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 25 ms 6588 KB Output is correct
36 Correct 2 ms 1108 KB Output is correct
37 Correct 30 ms 7636 KB Output is correct
38 Correct 25 ms 11532 KB Output is correct
39 Correct 325 ms 67896 KB Output is correct
40 Correct 361 ms 67836 KB Output is correct
41 Correct 154 ms 67620 KB Output is correct
42 Correct 316 ms 67828 KB Output is correct
43 Correct 339 ms 86488 KB Output is correct
44 Correct 157 ms 67724 KB Output is correct