#include <bits/stdc++.h>
const std::vector<int> directionX{-1, 1, 0, 0};
const std::vector<int> directionY{0, 0, -1, 1};
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(0);
int numRow, numColumn;
std::cin >> numRow >> numColumn;
std::vector<std::string> snow(numRow);
for (int row = 0; row < numRow; row++) {
std::cin >> snow[row];
}
std::deque<std::pair<int, int>> deque;
std::vector<std::vector<int>> depth(numRow, std::vector<int>(numColumn));
deque.emplace_back(0, 0);
depth[0][0] = 1;
int result = 1;
while (!deque.empty()) {
auto [currentRow, currentColumn] = deque.front();
deque.pop_front();
result = std::max(result, depth[currentRow][currentColumn]);
for (int direction = 0; direction < 4; direction++) {
int nextRow = currentRow + directionX[direction];
int nextColumn = currentColumn + directionY[direction];
if (nextRow >= 0 && nextRow < numRow && nextColumn >= 0 && nextColumn < numColumn &&
snow[nextRow][nextColumn] != '.' && depth[nextRow][nextColumn] == 0) {
if (snow[currentRow][currentColumn] == snow[nextRow][nextColumn]) {
depth[nextRow][nextColumn] = depth[currentRow][currentColumn];
deque.emplace_front(nextRow, nextColumn);
} else {
depth[nextRow][nextColumn] = depth[currentRow][currentColumn] + 1;
deque.emplace_back(nextRow, nextColumn);
}
}
}
}
std::cout << result;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
8 ms |
1616 KB |
Output is correct |
| 2 |
Correct |
1 ms |
336 KB |
Output is correct |
| 3 |
Correct |
1 ms |
336 KB |
Output is correct |
| 4 |
Correct |
5 ms |
1360 KB |
Output is correct |
| 5 |
Correct |
2 ms |
848 KB |
Output is correct |
| 6 |
Correct |
1 ms |
504 KB |
Output is correct |
| 7 |
Correct |
1 ms |
336 KB |
Output is correct |
| 8 |
Correct |
1 ms |
336 KB |
Output is correct |
| 9 |
Correct |
1 ms |
336 KB |
Output is correct |
| 10 |
Correct |
2 ms |
592 KB |
Output is correct |
| 11 |
Correct |
2 ms |
844 KB |
Output is correct |
| 12 |
Correct |
4 ms |
848 KB |
Output is correct |
| 13 |
Correct |
2 ms |
848 KB |
Output is correct |
| 14 |
Correct |
2 ms |
848 KB |
Output is correct |
| 15 |
Correct |
7 ms |
1616 KB |
Output is correct |
| 16 |
Correct |
12 ms |
1872 KB |
Output is correct |
| 17 |
Correct |
7 ms |
1616 KB |
Output is correct |
| 18 |
Correct |
5 ms |
1616 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
848 KB |
Output is correct |
| 2 |
Correct |
27 ms |
8284 KB |
Output is correct |
| 3 |
Correct |
161 ms |
80968 KB |
Output is correct |
| 4 |
Correct |
51 ms |
20552 KB |
Output is correct |
| 5 |
Correct |
100 ms |
45396 KB |
Output is correct |
| 6 |
Correct |
461 ms |
94184 KB |
Output is correct |
| 7 |
Correct |
2 ms |
848 KB |
Output is correct |
| 8 |
Correct |
2 ms |
848 KB |
Output is correct |
| 9 |
Correct |
2 ms |
604 KB |
Output is correct |
| 10 |
Correct |
1 ms |
592 KB |
Output is correct |
| 11 |
Correct |
2 ms |
732 KB |
Output is correct |
| 12 |
Correct |
2 ms |
624 KB |
Output is correct |
| 13 |
Correct |
30 ms |
8300 KB |
Output is correct |
| 14 |
Correct |
16 ms |
4944 KB |
Output is correct |
| 15 |
Correct |
11 ms |
5456 KB |
Output is correct |
| 16 |
Correct |
15 ms |
4176 KB |
Output is correct |
| 17 |
Correct |
77 ms |
20560 KB |
Output is correct |
| 18 |
Correct |
44 ms |
20304 KB |
Output is correct |
| 19 |
Correct |
52 ms |
19024 KB |
Output is correct |
| 20 |
Correct |
49 ms |
17488 KB |
Output is correct |
| 21 |
Correct |
95 ms |
48200 KB |
Output is correct |
| 22 |
Correct |
103 ms |
49736 KB |
Output is correct |
| 23 |
Correct |
148 ms |
39332 KB |
Output is correct |
| 24 |
Correct |
96 ms |
45852 KB |
Output is correct |
| 25 |
Correct |
210 ms |
91920 KB |
Output is correct |
| 26 |
Correct |
244 ms |
111960 KB |
Output is correct |
| 27 |
Correct |
356 ms |
104276 KB |
Output is correct |
| 28 |
Correct |
425 ms |
99024 KB |
Output is correct |
| 29 |
Correct |
429 ms |
99028 KB |
Output is correct |
| 30 |
Correct |
464 ms |
98768 KB |
Output is correct |
| 31 |
Correct |
383 ms |
52272 KB |
Output is correct |
| 32 |
Correct |
304 ms |
103788 KB |
Output is correct |
