#include <bits/stdc++.h>
using namespace std;
int main() {
int h, w;
cin >> h >> w;
vector<vector<char> > graph(h, vector<char>(w, 0));
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
cin >> graph[i][j];
}
}
deque<vector<int> > bfs;
bfs.push_back({0, 0});
vector<vector<int> > dist(h, vector<int>(w, -1));
dist[0][0] = 1;
int ans = 0;
vector<pair<int, int> > vec = {{0, 1}, {1, 0}, {0, -1}, {-1, 0}};
while (!bfs.empty()) {
auto current = bfs.front();
bfs.pop_front();
ans = max(ans, dist[current[0]][current[1]]);
// cout << current[0] << current[1] << dist[current[0]][current[1]] << endl;
for (pair<int, int> val: vec) {
int newx = newx;
int newy = current[1] + val.second;
if (newx >= 0 &&
newx < h &&
newy < w &&
newy >= 0) {
if (graph[newx][newy] == '.' || dist[newx][newy] != -1) continue;
if (graph[newx][newy] ==
graph[current[0]][current[1]]) {
dist[newx][newy] = dist[current[0]][current[1]];
bfs.push_front({newx, newy});
} else {
bfs.push_back({newx, newy});
dist[newx][newy] = dist[current[0]][current[1]] + 1;
}
}
}
}
cout << ans << endl;
}
Compilation message
tracks.cpp: In function 'int main()':
tracks.cpp:38:19: warning: 'newx' may be used uninitialized in this function [-Wmaybe-uninitialized]
38 | if (graph[newx][newy] == '.' || dist[newx][newy] != -1) continue;
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
15 ms |
1748 KB |
Output isn't correct |
| 2 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 3 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 4 |
Incorrect |
10 ms |
1124 KB |
Output isn't correct |
| 5 |
Incorrect |
6 ms |
724 KB |
Output isn't correct |
| 6 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 7 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
| 9 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
| 10 |
Incorrect |
4 ms |
596 KB |
Output isn't correct |
| 11 |
Incorrect |
3 ms |
468 KB |
Output isn't correct |
| 12 |
Incorrect |
6 ms |
724 KB |
Output isn't correct |
| 13 |
Incorrect |
5 ms |
724 KB |
Output isn't correct |
| 14 |
Incorrect |
6 ms |
724 KB |
Output isn't correct |
| 15 |
Incorrect |
16 ms |
1684 KB |
Output isn't correct |
| 16 |
Incorrect |
14 ms |
1680 KB |
Output isn't correct |
| 17 |
Incorrect |
15 ms |
1676 KB |
Output isn't correct |
| 18 |
Incorrect |
10 ms |
1236 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
4 ms |
812 KB |
Output isn't correct |
| 2 |
Incorrect |
89 ms |
8324 KB |
Output isn't correct |
| 3 |
Incorrect |
889 ms |
79264 KB |
Output isn't correct |
| 4 |
Incorrect |
223 ms |
19108 KB |
Output isn't correct |
| 5 |
Incorrect |
493 ms |
44904 KB |
Output isn't correct |
| 6 |
Incorrect |
878 ms |
79192 KB |
Output isn't correct |
| 7 |
Incorrect |
4 ms |
896 KB |
Output isn't correct |
| 8 |
Incorrect |
4 ms |
824 KB |
Output isn't correct |
| 9 |
Incorrect |
4 ms |
568 KB |
Output isn't correct |
| 10 |
Incorrect |
4 ms |
468 KB |
Output isn't correct |
| 11 |
Incorrect |
4 ms |
820 KB |
Output isn't correct |
| 12 |
Incorrect |
2 ms |
340 KB |
Output isn't correct |
| 13 |
Incorrect |
94 ms |
8372 KB |
Output isn't correct |
| 14 |
Incorrect |
52 ms |
4960 KB |
Output isn't correct |
| 15 |
Incorrect |
56 ms |
5484 KB |
Output isn't correct |
| 16 |
Incorrect |
36 ms |
3660 KB |
Output isn't correct |
| 17 |
Incorrect |
229 ms |
20584 KB |
Output isn't correct |
| 18 |
Incorrect |
228 ms |
20360 KB |
Output isn't correct |
| 19 |
Incorrect |
211 ms |
19216 KB |
Output isn't correct |
| 20 |
Incorrect |
190 ms |
17572 KB |
Output isn't correct |
| 21 |
Incorrect |
514 ms |
46484 KB |
Output isn't correct |
| 22 |
Incorrect |
512 ms |
44908 KB |
Output isn't correct |
| 23 |
Incorrect |
415 ms |
38760 KB |
Output isn't correct |
| 24 |
Incorrect |
482 ms |
45328 KB |
Output isn't correct |
| 25 |
Incorrect |
877 ms |
79224 KB |
Output isn't correct |
| 26 |
Correct |
665 ms |
60708 KB |
Output is correct |
| 27 |
Incorrect |
880 ms |
78812 KB |
Output isn't correct |
| 28 |
Incorrect |
882 ms |
78816 KB |
Output isn't correct |
| 29 |
Incorrect |
882 ms |
78816 KB |
Output isn't correct |
| 30 |
Incorrect |
847 ms |
77212 KB |
Output isn't correct |
| 31 |
Incorrect |
570 ms |
50620 KB |
Output isn't correct |
| 32 |
Incorrect |
868 ms |
78808 KB |
Output isn't correct |
