oj.uz

Submission #1089788

# Submission time Handle Problem Language Result Execution time Memory
1089788 2024-09-17T07:04:22 Z _callmelucian Maze (JOI23_ho_t3) C++14
8 / 100
 588 ms 108496 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pl;
typedef pair<int,int> pii;
typedef tuple<int,int,int> tt;

#define all(a) a.begin(), a.end()
#define filter(a) a.erase(unique(all(a)), a.end())

const int mn = 6e6 + 6;
int leaf[2][mn], n, m;

const int dr[4] = {-1, 0, 0, 1};
const int dc[4] = {0, -1, 1, 0};

void build (int layer, int k, int l, int r) {
    if (l == r)
        return leaf[layer][k] = l, void();
    int mid = (l + r) >> 1;
    build(layer, 2 * k, l, mid);
    build(layer, 2 * k + 1, mid + 1, r);
}

void getNode (int k, int l, int r, int a, int b, vector<int> &vec) {
    if (b < l || r < a) return;
    if (a <= l && r <= b)
        return vec.push_back(k), void();
    int mid = (l + r) >> 1;
    getNode(2 * k, l, mid, a, b, vec);
    getNode(2 * k + 1, mid + 1, r, a, b, vec);
}

int distance (int i, int j, int u, int v) {
    return max(abs(i - u), abs(j - v));
}

bool ok (int i, int j) {
    if (i < 1 || j < 1) return 0;
    if (i > n || j > m) return 0;
    return 1;
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);

    int k; cin >> n >> m >> k;
    int stx, sty, enx, eny; cin >> stx >> sty >> enx >> eny;

    vector<vector<bool>> block(n + 1, vector<bool>(m + 1));

    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            char c; cin >> c;
            if (c == '#') block[i][j] = 1;
        }
    }

    build(0, 1, 1, n);
    build(1, 1, 1, m);

    vector<vector<vector<int>>> dist(3);
    dist[1] = vector<vector<int>>(4 * n, vector<int>(m + 1, INT_MAX));
    dist[2] = vector<vector<int>>(n + 1, vector<int>(4 * m, INT_MAX));
    dist[0] = vector<vector<int>>(n + 1, vector<int>(m + 1, INT_MAX));

    vector<vector<vector<bool>>> vis(3);
    vis[1] = vector<vector<bool>>(4 * n, vector<bool>(m + 1));
    vis[2] = vector<vector<bool>>(n + 1, vector<bool>(4 * m));
    vis[0] = vector<vector<bool>>(n + 1, vector<bool>(m + 1));

    deque<tt> q; q.emplace_back(0, stx, sty);
    dist[0][stx][sty] = 0;

    while (q.size()) {
        int layer, x, y; tie(layer, x, y) = q.front(); q.pop_front();
        if (vis[layer][x][y]) continue;
        vis[layer][x][y] = 1;

        function<void(int,int,int,int)> addEdge = [&] (int nlay, int nx, int ny, int w) {
            if (dist[layer][x][y] + w >= dist[nlay][nx][ny]) return;
            dist[nlay][nx][ny] = dist[layer][x][y] + w;
            if (w) q.emplace_back(nlay, nx, ny);
            else q.emplace_front(nlay, nx, ny);
        };

        if (layer == 0) {
            if (block[x][y]) {
                if (distance(x, y, enx, eny) < k)
                    return cout << dist[layer][x][y], 0;

                vector<int> nodeX, nodeY;
                int xL = max(1, x - k), xR = min(n, x + k), yL = max(1, y - k), yR = min(m, y + k);
                getNode(1, 1, n, max(1, x - k + 1), min(n, x + 1 - 1), nodeX);
                getNode(1, 1, m, max(1, y - k + 1), min(m, y + k - 1), nodeY);

                for (int u : nodeX) {
                    addEdge(1, u, yL, 0);
                    addEdge(1, u, yR, 0);
                }
                for (int v : nodeY) {
                    addEdge(2, xL, v, 0);
                    addEdge(2, xR, v, 0);
                }
            }
            else {
                if (distance(x, y, enx, eny) == 0)
                    return cout << dist[layer][x][y], 0;

                for (int k = 0; k < 4; k++)
                    if (ok(x + dr[k], y + dc[k]))
                        addEdge(0, x + dr[k], y + dc[k], block[x + dr[k]][y + dc[k]]);
            }
        }
        else if (layer == 1) {
            if (leaf[0][x]) addEdge(0, leaf[0][x], y, block[leaf[0][x]][y]);
            else {
                addEdge(1, 2 * x, y, 0);
                addEdge(1, 2 * x + 1, y, 0);
            }
        }
        else if (layer == 2) {
            if (leaf[1][y]) addEdge(0, x, leaf[1][y], block[x][leaf[1][y]]);
            else {
                addEdge(2, x, 2 * y, 0);
                addEdge(2, x, 2 * y + 1, 0);
            }
        }
    }
    cout << -1;

    return 0;
}

Subtask #1
8.0 / 8.0

# 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 356 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 356 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 356 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 352 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 428 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 352 KB Output is correct
16 Correct 0 ms 352 KB Output is correct
17 Correct 1 ms 464 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 13 ms 2880 KB Output is correct
20 Correct 10 ms 3748 KB Output is correct
21 Correct 4 ms 3164 KB Output is correct
22 Correct 12 ms 2652 KB Output is correct
23 Correct 17 ms 2660 KB Output is correct
24 Correct 5 ms 4468 KB Output is correct
25 Correct 14 ms 4468 KB Output is correct
26 Correct 3 ms 2904 KB Output is correct
27 Correct 3 ms 2652 KB Output is correct
28 Correct 12 ms 2652 KB Output is correct
29 Correct 49 ms 6340 KB Output is correct
30 Correct 10 ms 3676 KB Output is correct
31 Correct 6 ms 6492 KB Output is correct
32 Correct 38 ms 6356 KB Output is correct
33 Correct 42 ms 6344 KB Output is correct
34 Correct 13 ms 11544 KB Output is correct
35 Correct 38 ms 11600 KB Output is correct
36 Correct 17 ms 6232 KB Output is correct
37 Correct 28 ms 6240 KB Output is correct
38 Correct 6 ms 6240 KB Output is correct
39 Correct 588 ms 57424 KB Output is correct
40 Correct 14 ms 7092 KB Output is correct
41 Correct 14 ms 13704 KB Output is correct
42 Correct 72 ms 8652 KB Output is correct
43 Correct 41 ms 12924 KB Output is correct
44 Correct 56 ms 31464 KB Output is correct
45 Correct 97 ms 35264 KB Output is correct
46 Correct 71 ms 62800 KB Output is correct
47 Correct 385 ms 57472 KB Output is correct
48 Correct 476 ms 57448 KB Output is correct
49 Correct 113 ms 108420 KB Output is correct
50 Correct 280 ms 108496 KB Output is correct
51 Correct 250 ms 57796 KB Output is correct
52 Correct 199 ms 57404 KB Output is correct
53 Correct 441 ms 57428 KB Output is correct

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# 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 356 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 356 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 356 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 352 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 428 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 352 KB Output is correct
16 Correct 0 ms 352 KB Output is correct
17 Correct 1 ms 464 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 13 ms 2880 KB Output is correct
20 Correct 10 ms 3748 KB Output is correct
21 Correct 4 ms 3164 KB Output is correct
22 Correct 12 ms 2652 KB Output is correct
23 Correct 17 ms 2660 KB Output is correct
24 Correct 5 ms 4468 KB Output is correct
25 Correct 14 ms 4468 KB Output is correct
26 Correct 3 ms 2904 KB Output is correct
27 Correct 3 ms 2652 KB Output is correct
28 Correct 12 ms 2652 KB Output is correct
29 Correct 49 ms 6340 KB Output is correct
30 Correct 10 ms 3676 KB Output is correct
31 Correct 6 ms 6492 KB Output is correct
32 Correct 38 ms 6356 KB Output is correct
33 Correct 42 ms 6344 KB Output is correct
34 Correct 13 ms 11544 KB Output is correct
35 Correct 38 ms 11600 KB Output is correct
36 Correct 17 ms 6232 KB Output is correct
37 Correct 28 ms 6240 KB Output is correct
38 Correct 6 ms 6240 KB Output is correct
39 Correct 588 ms 57424 KB Output is correct
40 Correct 14 ms 7092 KB Output is correct
41 Correct 14 ms 13704 KB Output is correct
42 Correct 72 ms 8652 KB Output is correct
43 Correct 41 ms 12924 KB Output is correct
44 Correct 56 ms 31464 KB Output is correct
45 Correct 97 ms 35264 KB Output is correct
46 Correct 71 ms 62800 KB Output is correct
47 Correct 385 ms 57472 KB Output is correct
48 Correct 476 ms 57448 KB Output is correct
49 Correct 113 ms 108420 KB Output is correct
50 Correct 280 ms 108496 KB Output is correct
51 Correct 250 ms 57796 KB Output is correct
52 Correct 199 ms 57404 KB Output is correct
53 Correct 441 ms 57428 KB Output is correct
54 Incorrect 1 ms 348 KB Output isn't correct
55 Halted 0 ms 0 KB -

Subtask #7
0 / 8.0

# 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 356 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 356 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 356 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 352 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 428 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 352 KB Output is correct
16 Correct 0 ms 352 KB Output is correct
17 Correct 1 ms 464 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 13 ms 2880 KB Output is correct
20 Correct 10 ms 3748 KB Output is correct
21 Correct 4 ms 3164 KB Output is correct
22 Correct 12 ms 2652 KB Output is correct
23 Correct 17 ms 2660 KB Output is correct
24 Correct 5 ms 4468 KB Output is correct
25 Correct 14 ms 4468 KB Output is correct
26 Correct 3 ms 2904 KB Output is correct
27 Correct 3 ms 2652 KB Output is correct
28 Correct 12 ms 2652 KB Output is correct
29 Correct 49 ms 6340 KB Output is correct
30 Correct 10 ms 3676 KB Output is correct
31 Correct 6 ms 6492 KB Output is correct
32 Correct 38 ms 6356 KB Output is correct
33 Correct 42 ms 6344 KB Output is correct
34 Correct 13 ms 11544 KB Output is correct
35 Correct 38 ms 11600 KB Output is correct
36 Correct 17 ms 6232 KB Output is correct
37 Correct 28 ms 6240 KB Output is correct
38 Correct 6 ms 6240 KB Output is correct
39 Correct 588 ms 57424 KB Output is correct
40 Correct 14 ms 7092 KB Output is correct
41 Correct 14 ms 13704 KB Output is correct
42 Correct 72 ms 8652 KB Output is correct
43 Correct 41 ms 12924 KB Output is correct
44 Correct 56 ms 31464 KB Output is correct
45 Correct 97 ms 35264 KB Output is correct
46 Correct 71 ms 62800 KB Output is correct
47 Correct 385 ms 57472 KB Output is correct
48 Correct 476 ms 57448 KB Output is correct
49 Correct 113 ms 108420 KB Output is correct
50 Correct 280 ms 108496 KB Output is correct
51 Correct 250 ms 57796 KB Output is correct
52 Correct 199 ms 57404 KB Output is correct
53 Correct 441 ms 57428 KB Output is correct
54 Incorrect 1 ms 348 KB Output isn't correct
55 Halted 0 ms 0 KB -

Subtask #8
0 / 6.0

# 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 356 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 356 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 356 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 352 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 1 ms 428 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 352 KB Output is correct
16 Correct 0 ms 352 KB Output is correct
17 Correct 1 ms 464 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 13 ms 2880 KB Output is correct
20 Correct 10 ms 3748 KB Output is correct
21 Correct 4 ms 3164 KB Output is correct
22 Correct 12 ms 2652 KB Output is correct
23 Correct 17 ms 2660 KB Output is correct
24 Correct 5 ms 4468 KB Output is correct
25 Correct 14 ms 4468 KB Output is correct
26 Correct 3 ms 2904 KB Output is correct
27 Correct 3 ms 2652 KB Output is correct
28 Correct 12 ms 2652 KB Output is correct
29 Correct 49 ms 6340 KB Output is correct
30 Correct 10 ms 3676 KB Output is correct
31 Correct 6 ms 6492 KB Output is correct
32 Correct 38 ms 6356 KB Output is correct
33 Correct 42 ms 6344 KB Output is correct
34 Correct 13 ms 11544 KB Output is correct
35 Correct 38 ms 11600 KB Output is correct
36 Correct 17 ms 6232 KB Output is correct
37 Correct 28 ms 6240 KB Output is correct
38 Correct 6 ms 6240 KB Output is correct
39 Correct 588 ms 57424 KB Output is correct
40 Correct 14 ms 7092 KB Output is correct
41 Correct 14 ms 13704 KB Output is correct
42 Correct 72 ms 8652 KB Output is correct
43 Correct 41 ms 12924 KB Output is correct
44 Correct 56 ms 31464 KB Output is correct
45 Correct 97 ms 35264 KB Output is correct
46 Correct 71 ms 62800 KB Output is correct
47 Correct 385 ms 57472 KB Output is correct
48 Correct 476 ms 57448 KB Output is correct
49 Correct 113 ms 108420 KB Output is correct
50 Correct 280 ms 108496 KB Output is correct
51 Correct 250 ms 57796 KB Output is correct
52 Correct 199 ms 57404 KB Output is correct
53 Correct 441 ms 57428 KB Output is correct
54 Incorrect 1 ms 348 KB Output isn't correct
55 Halted 0 ms 0 KB -