Submission #1165266

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1165266	2025-03-11 10:59:55	s101g	Tracks in the Snow (BOI13_tracks)	C++20	2.19 / 100	1144 ms	781336 KiB

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#include <bits/stdc++.h>
using namespace std;
vector<int> dr{-1, 1, 0, 0}, dc{0, 0, 1, -1};
int n, m;
vector<vector<char>> a;
vector<vector<bool>> vis;
void dfs(int r, int c, char cc)
{
    if (r < 0 || c < 0 || r >= n || c >= m || vis[r][c] || a[r][c] != cc)
        return;
    vis[r][c] = true;
    a[r][c] = 'X';
    for (int i = 0; i < 4; i++)
    {
        dfs(r + dr[i], c + dc[i], cc);
    }
}
int main()
{
    cin >> n >> m;
    a = vector<vector<char>>(n, vector<char>(m));
    vis = vector<vector<bool>>(n, vector<bool>(m, false));
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < m; j++)
        {
            cin >> a[i][j];
        }
    }
    if (a[0][0] == '.')
 
 
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• Subtask 1: 0 / 30
• Subtask 2: 2.1875 / 70