oj.uz

Submission #1049520

# Submission time Handle Problem Language Result Execution time Memory
1049520 2024-08-08T20:30:25 Z inkvizytor Tracks in the Snow (BOI13_tracks) C++17
84.6875 / 100
 1587 ms 1048576 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];
    }
    vector<vector<pair<int, bool>>> g (h*w);
    for (int i = 0; i < h; i++) {
        for (int j = 0; j < w; j++) {
            if (s[i][j] == '.') continue;
            if (i != 0 && s[i-1][j] != '.') {
                g[i*w+j].push_back({(i-1)*w+j, s[i][j]==s[i-1][j]});
            }
            if (j != 0 && s[i][j-1] != '.') {
                g[i*w+j].push_back({i*w+j-1, s[i][j]==s[i][j-1]});
            }
            if (i != h-1 && s[i+1][j] != '.') {
                g[i*w+j].push_back({(i+1)*w+j, s[i][j]==s[i+1][j]});
            }
            if (j != w-1 && s[i][j+1] != '.') {
                g[i*w+j].push_back({i*w+j+1, s[i][j]==s[i][j+1]});
            }
        }
    }
    deque<pair<int, int>> q;
    vector<bool> odw (h*w, 0);
    q.push_back({0, 1});
    int maxd = 0;
    while (!q.empty()) {
        auto x = q.front();
        q.pop_front();
        if (odw[x.first]) {
            continue;
        }
        maxd = max(maxd, x.second);
        odw[x.first] = 1;
        for (auto i : g[x.first]) {
            if (i.second) {
                q.push_front({i.first, x.second});
            }
            else {
                q.push_back({i.first, x.second+1});
            }
        }
    }
    cout << maxd << '\n';
}

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 17756 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 18 ms 12056 KB Output is correct
5 Correct 4 ms 3160 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 452 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 4 ms 3028 KB Output is correct
11 Correct 4 ms 3420 KB Output is correct
12 Correct 10 ms 6488 KB Output is correct
13 Correct 3 ms 3164 KB Output is correct
14 Correct 3 ms 3164 KB Output is correct
15 Correct 23 ms 15072 KB Output is correct
16 Correct 30 ms 17752 KB Output is correct
17 Correct 13 ms 10844 KB Output is correct
18 Correct 20 ms 12124 KB Output is correct

Subtask #2
54.6875 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2136 KB Output is correct
2 Correct 89 ms 68840 KB Output is correct
3 Correct 440 ms 563128 KB Output is correct
4 Correct 121 ms 117072 KB Output is correct
5 Correct 399 ms 371728 KB Output is correct
6 Runtime error 954 ms 1048576 KB Execution killed with signal 9
7 Correct 2 ms 1880 KB Output is correct
8 Correct 2 ms 2140 KB Output is correct
9 Correct 3 ms 3288 KB Output is correct
10 Correct 1 ms 1372 KB Output is correct
11 Correct 1 ms 1884 KB Output is correct
12 Correct 1 ms 1384 KB Output is correct
13 Correct 85 ms 68828 KB Output is correct
14 Correct 47 ms 40152 KB Output is correct
15 Correct 30 ms 34832 KB Output is correct
16 Correct 41 ms 32744 KB Output is correct
17 Correct 223 ms 175476 KB Output is correct
18 Correct 140 ms 137556 KB Output is correct
19 Correct 113 ms 116876 KB Output is correct
20 Correct 112 ms 124684 KB Output is correct
21 Correct 252 ms 330232 KB Output is correct
22 Correct 365 ms 371584 KB Output is correct
23 Correct 437 ms 340048 KB Output is correct
24 Correct 260 ms 327024 KB Output is correct
25 Correct 523 ms 553024 KB Output is correct
26 Runtime error 972 ms 1048576 KB Execution killed with signal 9
27 Runtime error 933 ms 1048576 KB Execution killed with signal 9
28 Runtime error 937 ms 1048576 KB Execution killed with signal 9
29 Runtime error 983 ms 1048576 KB Execution killed with signal 9
30 Runtime error 945 ms 1048576 KB Execution killed with signal 9
31 Correct 1587 ms 743524 KB Output is correct
32 Runtime error 929 ms 1048576 KB Execution killed with signal 9