#include <iostream>
#include <cstdio>
#include <vector>
#include <cmath>
#include <queue>
using namespace std;
vector<int> radd = { -1, 0, 1, 0 };
vector<int> cadd = { -1, 0, 1, 0 };
int main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr);
int h, w;
cin >> h >> w;
vector<vector<char>> trk(h + 2, vector<char>(w + 2, '.'));
for (int i = 1; i <= h; i++) for (int j = 1; j <= w; j++) cin >> trk[i][j];
priority_queue<pair<int, pair<int, int>>> bfs;
int ans = 0;
vector<vector<int>> dist(h + 2, vector<int>(w + 2, 0));
if (trk[1][1] == '.') cout << 0;
else
{
bfs.push({ -1, {1, 1} });
while (!bfs.empty())
{
int nans = -bfs.top().first;
int r = bfs.top().second.first;
int c = bfs.top().second.second;
bfs.pop();
if (dist[r][c] == 0)
{
ans = nans;
dist[r][c] = nans;
for (int dir = 0; dir < 4; dir++)
{
if (trk[r + radd[dir]][c + cadd[dir]] == trk[r][c]) bfs.push({ -nans, {r + radd[dir], c + cadd[dir]} });
else if (trk[r + radd[dir]][c + cadd[dir]] != '.') bfs.push({ -nans - 1, {r + radd[dir], c + cadd[dir]} });
}
}
}
cout << ans;
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
3 ms |
1856 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 |
Incorrect |
2 ms |
1372 KB |
Output isn't correct |
| 5 |
Incorrect |
1 ms |
860 KB |
Output isn't correct |
| 6 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 7 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 8 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 9 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 10 |
Incorrect |
1 ms |
720 KB |
Output isn't correct |
| 11 |
Incorrect |
1 ms |
604 KB |
Output isn't correct |
| 12 |
Incorrect |
1 ms |
860 KB |
Output isn't correct |
| 13 |
Incorrect |
1 ms |
860 KB |
Output isn't correct |
| 14 |
Incorrect |
1 ms |
860 KB |
Output isn't correct |
| 15 |
Incorrect |
3 ms |
1884 KB |
Output isn't correct |
| 16 |
Incorrect |
3 ms |
1880 KB |
Output isn't correct |
| 17 |
Incorrect |
2 ms |
1884 KB |
Output isn't correct |
| 18 |
Incorrect |
2 ms |
1296 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
972 KB |
Output isn't correct |
| 2 |
Incorrect |
16 ms |
9036 KB |
Output isn't correct |
| 3 |
Incorrect |
177 ms |
87180 KB |
Output isn't correct |
| 4 |
Incorrect |
35 ms |
20820 KB |
Output isn't correct |
| 5 |
Incorrect |
83 ms |
49252 KB |
Output isn't correct |
| 6 |
Incorrect |
158 ms |
87376 KB |
Output isn't correct |
| 7 |
Incorrect |
1 ms |
860 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
860 KB |
Output isn't correct |
| 9 |
Incorrect |
1 ms |
860 KB |
Output isn't correct |
| 10 |
Incorrect |
1 ms |
604 KB |
Output isn't correct |
| 11 |
Incorrect |
1 ms |
980 KB |
Output isn't correct |
| 12 |
Incorrect |
1 ms |
604 KB |
Output isn't correct |
| 13 |
Incorrect |
15 ms |
9156 KB |
Output isn't correct |
| 14 |
Incorrect |
9 ms |
5720 KB |
Output isn't correct |
| 15 |
Incorrect |
13 ms |
6188 KB |
Output isn't correct |
| 16 |
Incorrect |
10 ms |
3932 KB |
Output isn't correct |
| 17 |
Incorrect |
52 ms |
22540 KB |
Output isn't correct |
| 18 |
Incorrect |
38 ms |
22612 KB |
Output isn't correct |
| 19 |
Incorrect |
35 ms |
20820 KB |
Output isn't correct |
| 20 |
Incorrect |
47 ms |
19280 KB |
Output isn't correct |
| 21 |
Incorrect |
130 ms |
51164 KB |
Output isn't correct |
| 22 |
Incorrect |
91 ms |
49172 KB |
Output isn't correct |
| 23 |
Incorrect |
64 ms |
42576 KB |
Output isn't correct |
| 24 |
Incorrect |
80 ms |
49764 KB |
Output isn't correct |
| 25 |
Incorrect |
154 ms |
87132 KB |
Output isn't correct |
| 26 |
Correct |
118 ms |
67100 KB |
Output is correct |
| 27 |
Incorrect |
148 ms |
87144 KB |
Output isn't correct |
| 28 |
Incorrect |
148 ms |
87032 KB |
Output isn't correct |
| 29 |
Incorrect |
148 ms |
87124 KB |
Output isn't correct |
| 30 |
Incorrect |
154 ms |
85332 KB |
Output isn't correct |
| 31 |
Incorrect |
97 ms |
56236 KB |
Output isn't correct |
| 32 |
Incorrect |
142 ms |
87072 KB |
Output isn't correct |
