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Submission #810858

# Submission time Handle Problem Language Result Execution time Memory
810858 2023-08-06T16:50:12 Z _martynas Maze (JOI23_ho_t3) C++11
19 / 100
 2000 ms 472488 KB 
#include <bits/stdc++.h>

using namespace std;

#define fi first
#define se second
#define pb push_back
#define all(a) (a).begin(), (a).end()

using pii = pair<int, int>;

const int inf = 1e7;

int r, c, n;
int sr, sc, gr, gc;
vector<string> A;

int main() {
    cin >> r >> c >> n;
    if(c > r) {
        swap(r, c);
        cin >> sc >> sr >> gc >> gr;
        A = vector<string>(r, string(c, '#'));
        for(int i = 0; i < c; i++) {
            string s; cin >> s;
            for(int j = 0; j < r; j++) {
                A[j][i] = s[j];
            }
        }
    }
    else {
        cin >> sr >> sc >> gr >> gc;
        A = vector<string>(r);
        for(int i = 0; i < c; i++) {
            cin >> A[i]; 
        }
    }
    sr--, sc--, gr--, gc--;

    // cerr << "\n";
    // for(int i = 0; i < r; i++) {
    //     cerr << A[i] << "\n";
    // }

    // c < 2500
    vector<vector<int>> dist(r, vector<int>(c, inf));
    vector<vector<bool>> visited(r, vector<bool>(c));
    vector<set<int>> checked(c);
    deque<pii> deq;
    vector<pii> dir{{-1, 0}, {1, 0}, {0, -1}, {0, 1}};
    set<pii> available;
    for(int i = 0; i < r; i++) {
        for(int j = 0; j < r; j++) {
            available.insert({i, j});
        }
    }

    auto transition = [&](int row, int s, int e, int d) {
        //cerr << "transit: " << row << " " << s << " " << e << " " << d << "\n";
        // for(int i = s; i <= e; i++) {
        //     if(dist[row][i] > d+1) {
        //         dist[row][i] = d+1;
        //         deq.push_back({row, i});
        //     }
        // }
        // for(int i = e; i >= s; i--) {
        //     if(dist[row][i] > d+1) {
        //         dist[row][i] = d+1;
        //         deq.push_back({row, i});
        //     }
        // }
        auto it = available.lower_bound({row, s});
        vector<pii> del;
        while(it != available.end() && it->fi == row && it->se <= e) {
            if(dist[row][it->se] > d+1) {
                dist[row][it->se] = d+1;
                deq.push_back({row, it->se});
                del.pb(*it);
            }
            it = next(it);
        }
        for(auto p : del) {
            available.erase(p);
        }
    };

    dist[sr][sc] = 0;
    deq.push_back({sr, sc});
    while(!deq.empty()) {
        int i = deq.front().fi, j = deq.front().se;
        deq.pop_front();
        if(visited[i][j]) continue;
        visited[i][j] = true;
        for(auto d : dir) {
            int ii = i+d.fi, jj = j+d.se;
            if(ii < 0 || ii >= r || jj < 0 || jj >= c) continue;
            if(A[ii][jj] == '.' && dist[ii][jj] > dist[i][j]) {
                dist[ii][jj] = dist[i][j];
                deq.push_front({ii, jj});
            }
        }
        int li = max(0, i-(n-1)), ri = min(r-1, i+(n-1));
        if(!checked[j].empty()) {
            auto it = checked[j].lower_bound(i);
            if(it == checked[j].end()) {
                it = prev(it);
                li = max(li, (*it)+n);
            }
            else {
                ri = min(ri, (*it)-n);
                if(it != checked[j].begin()) {
                    it = prev(it);
                    li = max(li, (*it)+n);   
                }
            }
        }
        checked[j].insert(i);
        if(li <= ri) {
            for(int row = li; row <= ri; row++) {
                transition(row, max(0, j-n), min(c-1, j+n), dist[i][j]);
            }
        }
        if(i-n >= 0) {
            transition(i-n, max(0, j-n+1), min(c-1, j+n-1), dist[i][j]);
        }
        if(i+n < r) {
            transition(i+n, max(0, j-n+1), min(c-1, j+n-1), dist[i][j]);
        }
    }
    cout << dist[gr][gc] << "\n";
    return 0;
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 168 ms 47456 KB Output is correct
8 Correct 171 ms 47288 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 296 KB Output is correct
12 Correct 1 ms 304 KB Output is correct
13 Correct 3 ms 1336 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 50 ms 3572 KB Output is correct
20 Execution timed out 2094 ms 472488 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 296 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 2 ms 1108 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 173 ms 47396 KB Output is correct
16 Correct 175 ms 47380 KB Output is correct
17 Correct 38 ms 12108 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 3 ms 1236 KB Output is correct
27 Correct 1 ms 596 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 3 ms 468 KB Output is correct
30 Correct 1 ms 300 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 300 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 174 ms 47388 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 552 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 3 ms 1364 KB Output is correct
21 Correct 1 ms 428 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 296 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 83 ms 17612 KB Output is correct
26 Correct 304 ms 67856 KB Output is correct
27 Correct 36 ms 6232 KB Output is correct
28 Correct 21 ms 3916 KB Output is correct
29 Correct 21 ms 3520 KB Output is correct
30 Correct 20 ms 3544 KB Output is correct
31 Correct 212 ms 44656 KB Output is correct
32 Correct 47 ms 4868 KB Output is correct
33 Correct 45 ms 4556 KB Output is correct
34 Correct 129 ms 17796 KB Output is correct
35 Correct 106 ms 15324 KB Output is correct
36 Correct 54 ms 9420 KB Output is correct
37 Correct 55 ms 8296 KB Output is correct
38 Correct 52 ms 8272 KB Output is correct
39 Correct 351 ms 27696 KB Output is correct
40 Execution timed out 2100 ms 447256 KB Time limit exceeded
41 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 296 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 2 ms 1108 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 173 ms 47396 KB Output is correct
16 Correct 175 ms 47380 KB Output is correct
17 Correct 38 ms 12108 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 3 ms 1236 KB Output is correct
27 Correct 1 ms 596 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 3 ms 468 KB Output is correct
30 Correct 1 ms 300 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 43 ms 3660 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1020 ms 235040 KB Output is correct
36 Correct 84 ms 17636 KB Output is correct
37 Execution timed out 2111 ms 445804 KB Time limit exceeded
38 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 296 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 2 ms 1108 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 173 ms 47396 KB Output is correct
16 Correct 175 ms 47380 KB Output is correct
17 Correct 38 ms 12108 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 1 ms 596 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 3 ms 1236 KB Output is correct
27 Correct 1 ms 596 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 3 ms 468 KB Output is correct
30 Correct 1 ms 300 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 43 ms 3660 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1020 ms 235040 KB Output is correct
36 Correct 84 ms 17636 KB Output is correct
37 Execution timed out 2111 ms 445804 KB Time limit exceeded
38 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 168 ms 47456 KB Output is correct
8 Correct 171 ms 47288 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 296 KB Output is correct
12 Correct 1 ms 304 KB Output is correct
13 Correct 3 ms 1336 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 50 ms 3572 KB Output is correct
20 Execution timed out 2094 ms 472488 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #7
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 168 ms 47456 KB Output is correct
8 Correct 171 ms 47288 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 296 KB Output is correct
12 Correct 1 ms 304 KB Output is correct
13 Correct 3 ms 1336 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 50 ms 3572 KB Output is correct
20 Execution timed out 2094 ms 472488 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #8
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 168 ms 47456 KB Output is correct
8 Correct 171 ms 47288 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 296 KB Output is correct
12 Correct 1 ms 304 KB Output is correct
13 Correct 3 ms 1336 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 50 ms 3572 KB Output is correct
20 Execution timed out 2094 ms 472488 KB Time limit exceeded
21 Halted 0 ms 0 KB -