Submission #1040051

#	Time	Username	Problem	Language	Result	Execution time	Memory
1040051		TAhmed33	Maze (JOI23_ho_t3)	C++98	19 / 100	2084 ms	1616 KiB

Main

#include <bits/stdc++.h>
using namespace std;
int n, m, x;
int sr, sc, gr, gc;
vector <vector <char>> a;
priority_queue <array <int, 3>, vector <array <int, 3>>, greater <>> pq;
vector <vector <int>> dist;
int dx[4] = {0, -1, 0, 1};
int dy[4] = {1, 0, -1, 0};
void solve () {
    cin >> n >> m >> x >> sr >> sc >> gr >> gc;
    a.resize(n);
    dist.resize(n);
    for (auto &i : dist) {
        i.resize(m);
        for (auto &j : i) {
            j = 1e9;
        }
    }
    for (auto &i : a) {
        i.resize(m);
        for (auto &j : i) {
            cin >> j;
        }
    }
    sr--; sc--; gr--; gc--;   
    dist[sr][sc] = 0;

    pq.push({0, sr, sc}); 
    while (!pq.empty()) {
        auto k = pq.top();
        pq.pop();
        if (k[0] > dist[k[1]][k[2]]) {
            continue;
        }
        for (int j = 0; j < n; j++) {
            for (int l = 0; l < m; l++) {
                if (abs(j - k[1]) <= x && abs(l - k[2]) <= x) {
                    bool flag = abs(j - k[1]) < x;
                    flag |= abs(l - k[2]) < x;
                    if (!flag) continue;
                    if (k[0] + 1 < dist[j][l]) {
                        dist[j][l] = k[0] + 1;
                        pq.push({dist[j][l], j, l});
                    }
                }
            }
        }
        for (int i = 0; i < 4; i++) {
            int x = k[1] + dx[i], y = k[2] + dy[i];
            if (x >= 0 && x < n && y >= 0 && y < m) {
                if (a[x][y] != '#') {
                    if (dist[x][y] > k[0]) {
                        dist[x][y] = k[0];
                        pq.push({dist[x][y], x, y});
                    }
                }
            }
        }
    }
    cout << dist[gr][gc] << '\n';
}       
signed main () {
    ios::sync_with_stdio(0); cin.tie(0);
    int tc = 1; //cin >> tc;
    while (tc--) solve();
}

• Subtask 1: 0 / 8
• Subtask 2: 19 / 19
• Subtask 3: 0 / 16
• Subtask 4: 0 / 19
• Subtask 5: 0 / 5
• Subtask 6: 0 / 19
• Subtask 7: 0 / 8
• Subtask 8: 0 / 6