#include<bits/stdc++.h>
using namespace std;
#define pi pair<int,int>
#define ll long long
#define pb push_back
#define pf push_front
const int MOD = 1e9+7;
const int dx[] = {1, 0, -1, 0};
const int dy[] = {0, 1, 0, -1};
int main()
{
cin.tie(0)->sync_with_stdio(false);
int n, m;
cin >> n >> m;
string s[n];
for(int i=0; i<n; i++)
cin >> s[i];
deque<pi> q;
vector<vector<int>> d(n, vector<int>(m));
vector<vector<bool>> vis(n, vector<bool>(m));
d[0][0] = 0;
q.pb({0, 0});
while(q.size()){
pi u = q.front();
q.pop_front();
if(vis[u.first][u.second]) continue;
vis[u.first][u.second] = true;
for(int i=0; i<4; i++){
int new_x = u.first + dx[i];
int new_y = u.second + dy[i];
if(new_x < 0 or new_x >= n or new_y < 0 or new_y >= m) continue;
if(s[new_x][new_y] == s[u.first][u.second]){
d[new_x][new_y] = d[u.first][u.second];
q.pf({new_x, new_y});
}else if(s[new_x][new_y] != '.'){
d[new_x][new_y] = d[u.first][u.second] + 1;
q.pb({new_x, new_y});
}
}
}
cout << d[n-1][m-1] << '\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
15 ms |
2136 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 |
7 ms |
1748 KB |
Output isn't correct |
| 5 |
Incorrect |
2 ms |
860 KB |
Output isn't correct |
| 6 |
Incorrect |
0 ms |
456 KB |
Output isn't correct |
| 7 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 8 |
Incorrect |
1 ms |
360 KB |
Output isn't correct |
| 9 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 10 |
Incorrect |
2 ms |
860 KB |
Output isn't correct |
| 11 |
Incorrect |
2 ms |
860 KB |
Output isn't correct |
| 12 |
Incorrect |
6 ms |
1116 KB |
Output isn't correct |
| 13 |
Incorrect |
2 ms |
860 KB |
Output isn't correct |
| 14 |
Incorrect |
2 ms |
976 KB |
Output isn't correct |
| 15 |
Incorrect |
12 ms |
2132 KB |
Output isn't correct |
| 16 |
Incorrect |
15 ms |
2216 KB |
Output isn't correct |
| 17 |
Incorrect |
7 ms |
1884 KB |
Output isn't correct |
| 18 |
Incorrect |
7 ms |
1884 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
2 ms |
1112 KB |
Output isn't correct |
| 2 |
Incorrect |
41 ms |
10076 KB |
Output isn't correct |
| 3 |
Incorrect |
214 ms |
98736 KB |
Output isn't correct |
| 4 |
Incorrect |
51 ms |
23448 KB |
Output isn't correct |
| 5 |
Incorrect |
146 ms |
55636 KB |
Output isn't correct |
| 6 |
Incorrect |
847 ms |
134308 KB |
Output isn't correct |
| 7 |
Incorrect |
2 ms |
1112 KB |
Output isn't correct |
| 8 |
Incorrect |
2 ms |
1268 KB |
Output isn't correct |
| 9 |
Incorrect |
2 ms |
880 KB |
Output isn't correct |
| 10 |
Incorrect |
1 ms |
604 KB |
Output isn't correct |
| 11 |
Incorrect |
2 ms |
1116 KB |
Output isn't correct |
| 12 |
Incorrect |
1 ms |
500 KB |
Output isn't correct |
| 13 |
Incorrect |
42 ms |
10076 KB |
Output isn't correct |
| 14 |
Incorrect |
25 ms |
5980 KB |
Output isn't correct |
| 15 |
Incorrect |
12 ms |
6492 KB |
Output isn't correct |
| 16 |
Incorrect |
22 ms |
4444 KB |
Output isn't correct |
| 17 |
Incorrect |
105 ms |
25208 KB |
Output isn't correct |
| 18 |
Incorrect |
62 ms |
25152 KB |
Output isn't correct |
| 19 |
Incorrect |
49 ms |
23448 KB |
Output isn't correct |
| 20 |
Incorrect |
50 ms |
21340 KB |
Output isn't correct |
| 21 |
Incorrect |
126 ms |
57428 KB |
Output isn't correct |
| 22 |
Incorrect |
145 ms |
55624 KB |
Output isn't correct |
| 23 |
Incorrect |
209 ms |
48192 KB |
Output isn't correct |
| 24 |
Incorrect |
108 ms |
56148 KB |
Output isn't correct |
| 25 |
Incorrect |
383 ms |
98648 KB |
Output isn't correct |
| 26 |
Incorrect |
593 ms |
277268 KB |
Output isn't correct |
| 27 |
Incorrect |
685 ms |
199840 KB |
Output isn't correct |
| 28 |
Incorrect |
824 ms |
134592 KB |
Output isn't correct |
| 29 |
Incorrect |
819 ms |
129372 KB |
Output isn't correct |
| 30 |
Incorrect |
756 ms |
158792 KB |
Output isn't correct |
| 31 |
Incorrect |
659 ms |
65116 KB |
Output isn't correct |
| 32 |
Incorrect |
629 ms |
186124 KB |
Output isn't correct |
