Submission #917149

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
917149	2024-01-27 10:20:55	0x34c	Tracks in the Snow (BOI13_tracks)	C++17	100 / 100	891 ms	781460 KiB

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#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define endl '\n'
using namespace std;
int N, M;
vector<vector<bool>> vis;
vector<vector<char>> grid;
queue<pii> q;
int mvt[4][2] = {{0, 1}, {1, 0}, {0, -1}, {-1, 0}};
void dfs(int r, int c, char let)
{
    if (r < 0 || c < 0 || r >= N || c >= M || grid[r][c] == '.' || vis[r][c])
        return;
    if (grid[r][c] != let)
    {
        q.push({r, c});
        return;
    }
    vis[r][c] = true;
    for (int i = 0; i < 4; i++)
    {
        int rx = r + mvt[i][0], cx = c + mvt[i][1];
        dfs(rx, cx, let);
    }
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 70 / 70