Submission #134080

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
134080	2019-07-22 04:05:13	fredbr	Tracks in the Snow (BOI13_tracks)	C++17	97.81 / 100	1452 ms	1048576 KiB

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#include <bits/stdc++.h>
using namespace std;
int const maxn = 4010;
int cnt = 0;
int n, m;
char vis[maxn][maxn];
char v[maxn][maxn];
using ii = pair<int, int>;
vector<ii> nxt;
void dfs(int x, int y) {
    static int const dx[] = {0, 1, 0, -1};
    static int const dy[] = {1, 0, -1, 0};
    if (vis[x][y]) return;
    if (v[x][y] == '.') return;
    vis[x][y] = 1;
    cnt--;
    for (int i = 0; i < 4; i++) {
        int xx = x + dx[i];
        int yy = y + dy[i];
        if (xx >= 0 and xx < n and yy >= 0 and yy < m) {
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 67.8125 / 70