oj.uz

Submission #1050870

# Submission time Handle Problem Language Result Execution time Memory
1050870 2024-08-09T15:51:44 Z inkvizytor Tracks in the Snow (BOI13_tracks) C++17
100 / 100
 455 ms 127756 KB 
#include <bits/stdc++.h>
using namespace std;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int h, w;
    cin >> h >> w;
    vector<string> s (h);
    for (int i = 0; i < h; i++) {
        cin >> s[i];
    }
    deque<pair<pair<short, short>, int>> q;
    vector<vector<bool>> odw (h, vector<bool>(w, 0));
    q.push_back({{0, 0}, 1});
    int maxd = 0;
    while (!q.empty()) {
        auto x = q.front();
        short i = x.first.first, j = x.first.second;
        q.pop_front();
        if (odw[i][j]) {
            continue;
        }
        maxd = max(maxd, x.second);
        odw[i][j] = 1;
        if (i != 0 && !odw[i-1][j] && s[i-1][j] != '.') {
            if (s[i][j] == s[i-1][j]) {
                q.push_front({{i-1, j}, x.second});
            }
            else {
                q.push_back({{i-1, j}, x.second+1});
            }
        }
        if (j != 0 && !odw[i][j-1] && s[i][j-1] != '.') {
            if (s[i][j] == s[i][j-1]) {
                q.push_front({{i, j-1}, x.second});
            }
            else {
                q.push_back({{i, j-1}, x.second+1});
            }
        }
        if (i != h-1 && !odw[i+1][j] && s[i+1][j] != '.') {
            if (s[i][j] == s[i+1][j]) {
                q.push_front({{i+1, j}, x.second});
            }
            else {
                q.push_back({{i+1, j}, x.second+1});
            }
        }
        if (j != w-1 && !odw[i][j+1] && s[i][j+1] != '.') {
            if (s[i][j] == s[i][j+1]) {
                q.push_front({{i, j+1}, x.second});
            }
            else {
                q.push_back({{i, j+1}, x.second+1});
            }
        }

    }
    cout << maxd << '\n';
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1116 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 4 ms 1112 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 3 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 6 ms 860 KB Output is correct
16 Correct 8 ms 1112 KB Output is correct
17 Correct 4 ms 860 KB Output is correct
18 Correct 4 ms 1116 KB Output is correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1116 KB Output is correct
2 Correct 22 ms 3776 KB Output is correct
3 Correct 110 ms 36056 KB Output is correct
4 Correct 23 ms 8536 KB Output is correct
5 Correct 78 ms 20284 KB Output is correct
6 Correct 455 ms 61608 KB Output is correct
7 Correct 1 ms 856 KB Output is correct
8 Correct 1 ms 860 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 1 ms 856 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 26 ms 3960 KB Output is correct
14 Correct 12 ms 2520 KB Output is correct
15 Correct 7 ms 2668 KB Output is correct
16 Correct 14 ms 1880 KB Output is correct
17 Correct 55 ms 9408 KB Output is correct
18 Correct 26 ms 9104 KB Output is correct
19 Correct 23 ms 8536 KB Output is correct
20 Correct 26 ms 7772 KB Output is correct
21 Correct 64 ms 20764 KB Output is correct
22 Correct 81 ms 20308 KB Output is correct
23 Correct 111 ms 17820 KB Output is correct
24 Correct 63 ms 20300 KB Output is correct
25 Correct 120 ms 35924 KB Output is correct
26 Correct 338 ms 127756 KB Output is correct
27 Correct 436 ms 100584 KB Output is correct
28 Correct 452 ms 61404 KB Output is correct
29 Correct 444 ms 60056 KB Output is correct
30 Correct 424 ms 70680 KB Output is correct
31 Correct 332 ms 23832 KB Output is correct
32 Correct 361 ms 82008 KB Output is correct