#include <bits/stdc++.h>
using namespace std;
const vector<int> dx = {-1, 1, 0, 0},
dy = {0, 0, -1, 1};
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int h, w; cin >> h >> w;
vector<string> grid(h);
for (string& s : grid) cin >> s;
deque<pair<int, pair<int, int>>> dq;
dq.push_front({1, {0, 0}});
vector<vector<bool>> vis(h, vector<bool>(w));
int ans = 1;
while (!dq.empty()) {
int d = dq.front().first;
pair<int, int> pla = dq.front().second;
dq.pop_front();
if (vis[pla.first][pla.second]) continue;
vis[pla.first][pla.second] = true;
ans = max(ans, d);
for (int i = 0; i < 4; ++i) {
pair<int, int> ne = {pla.first + dx[i], pla.second + dy[i]};
if (ne.first < 0 || ne.first >= h || ne.second < 0 || ne.second >= w) continue;
if (grid[pla.first][pla.second] == grid[ne.first][ne.second] && grid[ne.first][ne.second] != '.') {
dq.push_front({d, ne});
} else {
dq.push_back({d + 1, ne});
}
}
}
cout << ans << '\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
16 ms |
1116 KB |
Output isn't correct |
| 2 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 3 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 4 |
Correct |
9 ms |
1116 KB |
Output is correct |
| 5 |
Incorrect |
6 ms |
648 KB |
Output isn't correct |
| 6 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 7 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 8 |
Correct |
1 ms |
348 KB |
Output is correct |
| 9 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 10 |
Incorrect |
3 ms |
600 KB |
Output isn't correct |
| 11 |
Correct |
2 ms |
604 KB |
Output is correct |
| 12 |
Incorrect |
7 ms |
780 KB |
Output isn't correct |
| 13 |
Incorrect |
4 ms |
604 KB |
Output isn't correct |
| 14 |
Incorrect |
5 ms |
604 KB |
Output isn't correct |
| 15 |
Incorrect |
13 ms |
1032 KB |
Output isn't correct |
| 16 |
Incorrect |
14 ms |
1112 KB |
Output isn't correct |
| 17 |
Incorrect |
12 ms |
952 KB |
Output isn't correct |
| 18 |
Correct |
9 ms |
1116 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
3 ms |
1116 KB |
Output isn't correct |
| 2 |
Incorrect |
77 ms |
2756 KB |
Output isn't correct |
| 3 |
Incorrect |
784 ms |
21072 KB |
Output isn't correct |
| 4 |
Incorrect |
173 ms |
5444 KB |
Output isn't correct |
| 5 |
Incorrect |
301 ms |
11608 KB |
Output isn't correct |
| 6 |
Correct |
1048 ms |
72848 KB |
Output is correct |
| 7 |
Incorrect |
3 ms |
1116 KB |
Output isn't correct |
| 8 |
Incorrect |
3 ms |
1116 KB |
Output isn't correct |
| 9 |
Incorrect |
3 ms |
860 KB |
Output isn't correct |
| 10 |
Incorrect |
1 ms |
604 KB |
Output isn't correct |
| 11 |
Incorrect |
2 ms |
860 KB |
Output isn't correct |
| 12 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 13 |
Incorrect |
76 ms |
2652 KB |
Output isn't correct |
| 14 |
Incorrect |
45 ms |
1628 KB |
Output isn't correct |
| 15 |
Incorrect |
43 ms |
1624 KB |
Output isn't correct |
| 16 |
Incorrect |
31 ms |
1372 KB |
Output isn't correct |
| 17 |
Incorrect |
191 ms |
5980 KB |
Output isn't correct |
| 18 |
Incorrect |
160 ms |
5464 KB |
Output isn't correct |
| 19 |
Incorrect |
174 ms |
5440 KB |
Output isn't correct |
| 20 |
Incorrect |
140 ms |
4956 KB |
Output isn't correct |
| 21 |
Incorrect |
438 ms |
12436 KB |
Output isn't correct |
| 22 |
Incorrect |
299 ms |
11784 KB |
Output isn't correct |
| 23 |
Incorrect |
385 ms |
10540 KB |
Output isn't correct |
| 24 |
Incorrect |
451 ms |
11868 KB |
Output isn't correct |
| 25 |
Incorrect |
788 ms |
20920 KB |
Output isn't correct |
| 26 |
Correct |
986 ms |
386300 KB |
Output is correct |
| 27 |
Correct |
959 ms |
106232 KB |
Output is correct |
| 28 |
Correct |
1025 ms |
72956 KB |
Output is correct |
| 29 |
Correct |
1010 ms |
66244 KB |
Output is correct |
| 30 |
Correct |
959 ms |
91164 KB |
Output is correct |
| 31 |
Incorrect |
600 ms |
15520 KB |
Output isn't correct |
| 32 |
Incorrect |
1008 ms |
119340 KB |
Output isn't correct |
