#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef double ld;
#define pb push_back
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
#define F first
#define S second
const int N = 4000;
int n, m, ans = 1, sz[N][N];
pair<int, int> p[N][N];
char c[N][N];
bool fc[N][N];
int dx[] = {1, -1, 0, 0};
int dy[] = {0, 0, 1, -1};
void dfs(int i, int j) {
fc[i][j] = true;
for (int ii = 0; ii < 4; ii++) {
int nx = i + dx[ii], ny = j + dy[ii];
if (nx >= 0 && ny >= 0 && nx < n && ny < m && c[nx][ny] == c[0][0] && !fc[nx][ny]) {
dfs(nx, ny);
}
}
}
pair<int, int> findp(int i, int j) {
return p[i][j] = (p[i][j].F == i && p[i][j].S == j ? p[i][j] : findp(p[i][j].F, p[i][j].S));
}
void merge(int i, int j, int x, int y) {
pair<int, int> f = findp(i, j), s = findp(x, y);
if (f == s)return;
if (sz[s.F][s.S] > sz[f.F][f.S])swap(f, s);
p[s.F][s.S] = f;
}
int main () {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cin >> n >> m;
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
cin >> c[i][j];
p[i][j] = {i, j};
sz[i][j] = 1;
}
}
dfs(0, 0);
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
for (int k = 0; k < 4; k++) {
int nx = i + dx[k], ny = j + dy[k];
if (nx < 0 || ny < 0 || nx >= n || ny >= m)continue;
if (c[nx][ny] == c[i][j] || fc[nx][ny]) {
merge(i, j, nx, ny);
}
}
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (p[i][j].F == i && p[i][j].S == j) {
ans++;
}
}
}
cout << ans-1;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
26 ms |
31064 KB |
Output isn't correct |
| 2 |
Incorrect |
1 ms |
6492 KB |
Output isn't correct |
| 3 |
Incorrect |
1 ms |
6744 KB |
Output isn't correct |
| 4 |
Incorrect |
27 ms |
31580 KB |
Output isn't correct |
| 5 |
Incorrect |
13 ms |
22104 KB |
Output isn't correct |
| 6 |
Incorrect |
1 ms |
6900 KB |
Output isn't correct |
| 7 |
Incorrect |
2 ms |
6744 KB |
Output isn't correct |
| 8 |
Incorrect |
2 ms |
8792 KB |
Output isn't correct |
| 9 |
Incorrect |
3 ms |
9048 KB |
Output isn't correct |
| 10 |
Incorrect |
10 ms |
19800 KB |
Output isn't correct |
| 11 |
Incorrect |
9 ms |
15904 KB |
Output isn't correct |
| 12 |
Incorrect |
12 ms |
22108 KB |
Output isn't correct |
| 13 |
Incorrect |
13 ms |
22104 KB |
Output isn't correct |
| 14 |
Incorrect |
13 ms |
22108 KB |
Output isn't correct |
| 15 |
Incorrect |
27 ms |
33112 KB |
Output isn't correct |
| 16 |
Incorrect |
26 ms |
31064 KB |
Output isn't correct |
| 17 |
Incorrect |
28 ms |
31128 KB |
Output isn't correct |
| 18 |
Incorrect |
27 ms |
31576 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
31 ms |
214256 KB |
Output isn't correct |
| 2 |
Incorrect |
180 ms |
73220 KB |
Output isn't correct |
| 3 |
Incorrect |
1967 ms |
220140 KB |
Output isn't correct |
| 4 |
Incorrect |
494 ms |
108624 KB |
Output isn't correct |
| 5 |
Incorrect |
455 ms |
170612 KB |
Output isn't correct |
| 6 |
Execution timed out |
2036 ms |
239440 KB |
Time limit exceeded |
| 7 |
Incorrect |
30 ms |
218704 KB |
Output isn't correct |
| 8 |
Incorrect |
30 ms |
214360 KB |
Output isn't correct |
| 9 |
Incorrect |
7 ms |
7000 KB |
Output isn't correct |
| 10 |
Incorrect |
4 ms |
6744 KB |
Output isn't correct |
| 11 |
Incorrect |
31 ms |
218392 KB |
Output isn't correct |
| 12 |
Incorrect |
3 ms |
13148 KB |
Output isn't correct |
| 13 |
Incorrect |
179 ms |
73224 KB |
Output isn't correct |
| 14 |
Incorrect |
104 ms |
57432 KB |
Output isn't correct |
| 15 |
Incorrect |
106 ms |
59736 KB |
Output isn't correct |
| 16 |
Incorrect |
67 ms |
28848 KB |
Output isn't correct |
| 17 |
Incorrect |
448 ms |
115300 KB |
Output isn't correct |
| 18 |
Incorrect |
422 ms |
115020 KB |
Output isn't correct |
| 19 |
Incorrect |
492 ms |
108604 KB |
Output isn't correct |
| 20 |
Incorrect |
421 ms |
99884 KB |
Output isn't correct |
| 21 |
Incorrect |
1137 ms |
175064 KB |
Output isn't correct |
| 22 |
Incorrect |
523 ms |
170320 KB |
Output isn't correct |
| 23 |
Incorrect |
848 ms |
144020 KB |
Output isn't correct |
| 24 |
Incorrect |
858 ms |
174928 KB |
Output isn't correct |
| 25 |
Incorrect |
1618 ms |
220112 KB |
Output isn't correct |
| 26 |
Execution timed out |
2068 ms |
963724 KB |
Time limit exceeded |
| 27 |
Execution timed out |
2041 ms |
420672 KB |
Time limit exceeded |
| 28 |
Execution timed out |
2009 ms |
239460 KB |
Time limit exceeded |
| 29 |
Execution timed out |
2056 ms |
245584 KB |
Time limit exceeded |
| 30 |
Execution timed out |
2037 ms |
237780 KB |
Time limit exceeded |
| 31 |
Incorrect |
932 ms |
181932 KB |
Output isn't correct |
| 32 |
Execution timed out |
2039 ms |
219892 KB |
Time limit exceeded |
