Submission #474820

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
474820	2021-09-20 01:34:53	dqk	Tracks in the Snow (BOI13_tracks)	C++17	97.81 / 100	1763 ms	1048580 KiB

tracks

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#include <bits/stdc++.h>
int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);
    int n, m;
    std::cin >> n >> m;
    std::vector<std::string> g(n);
    for (int i = 0; i < n; ++i) {
        std::cin >> g[i];
    }
    std::vector<std::vector<int>> comp(n, std::vector<int>(m, 0));
    std::vector<std::vector<int>> adj(n * m + 5);
    int num = 0;
    std::function<void(int, int, char)> dfs=[&](int x, int y, char c) {
        if (x < 0 || x >= n || y < 0 || y >= m || g[x][y] == '.')
            return;
        if (comp[x][y] && comp[x][y] != num) {
            adj[comp[x][y]].push_back(num);
            adj[num].push_back(comp[x][y]);
        }
        if (comp[x][y] || g[x][y] != c)
            return;
        comp[x][y] = num;
        dfs(x + 1, y, c);
        dfs(x - 1, y, c);
        dfs(x, y + 1, c);
        dfs(x, y - 1, c);
    };
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 67.8125 / 70