// In the name of Allah
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define all(x) (x).begin(),(x).end()
#define len(x) ((ll) (x).size())
#define F first
#define S second
#define pb push_back
#define sep ' '
#define endl '\n'
#define Mp make_pair
#define debug(x) cerr << #x << ": " << x << endl;
#define kill(x) cout << x << '\n', exit(0);
#define set_dec(x) cout << fixed << setprecision(x);
#define file_io(x,y) freopen(x, "r", stdin); freopen(y, "w", stdout);
int n, m;
const int maxn = 3e3 + 5;
const int maxs = 9e6 + 5;
string s[maxn];
int cntv = 0;
int arr[maxs];
int adj[maxs][3]; int ind[maxs];
bitset<maxs> mark, c4; int h[maxs];
int dp[maxs][8];
int GI(int i, int j) {
return i * m + j;
}
void dfs(int v) {
mark[v] = 1;
vector<int> vc;
for (int i = 0; i < ind[v]; i++) {
int u = adj[v][i];
if (!mark[u]) {
h[u] = h[v] + 1;
dfs(u);
vc.pb(u);
}
else if (h[u] == h[v] - 3) {
c4[v] = 1;
}
}
for (int i = 0; i < 8; i++) {
int b1 = (bool) (i & 1), b2 = (bool) (i & 2), b3 = (bool) (i & 4);
if ((b1 && b2) || (b2 && b3)) continue;
dp[v][i] += b1;
for (int u : vc) {
int val0 = b1 * 2 + b2 * 4, val1 = 1 + b1 * 2 + b2 * 4;
if (b1 || (c4[u] && b3)) {
dp[v][i] += dp[u][val0];
}
else {
dp[v][i] += max(dp[u][val0], dp[u][val1]);
}
}
}
vc.clear();
}
int main() {
ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin >> n >> m;
for (int i = 0; i < n; i++) cin >> s[i];
fill(arr, arr + maxs, -1);
for (int i = 0; i < n; i++) {
for (int j = 0; j < m - 2; j++) {
if (s[i][j] == 'R' && s[i][j + 1] == 'G' && s[i][j + 2] == 'W') {
for (int j1 : {j, j + 1, j + 2}) {
if (arr[GI(i, j1)] != -1) {
int v1 = arr[GI(i, j1)], v2 = cntv;
adj[v1][ind[v1]++] = v2; adj[v2][ind[v2]++] = v1;
}
else arr[GI(i, j1)] = cntv;
}
cntv++;
}
}
}
for (int i = 0; i < n - 2; i++) {
for (int j = 0; j < m; j++) {
if (s[i][j] == 'R' && s[i + 1][j] == 'G' && s[i + 2][j] == 'W') {
for (int i1 : {i, i + 1, i + 2}) {
if (arr[GI(i1, j)] != -1) {
int v1 = arr[GI(i1, j)], v2 = cntv;
adj[v1][ind[v1]++] = v2; adj[v2][ind[v2]++] = v1;
}
else arr[GI(i1, j)] = cntv;
}
cntv++;
}
}
}
int output = 0;
for (int i = 0; i < cntv; i++) {
if (!mark[i]) {
dfs(i);
output += max(dp[i][0], dp[i][1]);
}
}
cout << output << endl;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
35540 KB |
Output is correct |
2 |
Correct |
13 ms |
35540 KB |
Output is correct |
3 |
Correct |
13 ms |
35540 KB |
Output is correct |
4 |
Correct |
13 ms |
35644 KB |
Output is correct |
5 |
Correct |
14 ms |
35568 KB |
Output is correct |
6 |
Correct |
14 ms |
35668 KB |
Output is correct |
7 |
Correct |
13 ms |
35584 KB |
Output is correct |
8 |
Correct |
14 ms |
35672 KB |
Output is correct |
9 |
Correct |
15 ms |
35612 KB |
Output is correct |
10 |
Correct |
14 ms |
35540 KB |
Output is correct |
11 |
Correct |
14 ms |
35668 KB |
Output is correct |
12 |
Correct |
14 ms |
35576 KB |
Output is correct |
13 |
Correct |
13 ms |
35668 KB |
Output is correct |
14 |
Correct |
13 ms |
35576 KB |
Output is correct |
15 |
Correct |
13 ms |
35632 KB |
Output is correct |
16 |
Correct |
14 ms |
35592 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
35540 KB |
Output is correct |
2 |
Correct |
13 ms |
35540 KB |
Output is correct |
3 |
Correct |
13 ms |
35540 KB |
Output is correct |
4 |
Correct |
13 ms |
35644 KB |
Output is correct |
5 |
Correct |
14 ms |
35568 KB |
Output is correct |
6 |
Correct |
14 ms |
35668 KB |
Output is correct |
7 |
Correct |
13 ms |
35584 KB |
Output is correct |
8 |
Correct |
14 ms |
35672 KB |
Output is correct |
9 |
Correct |
15 ms |
35612 KB |
Output is correct |
10 |
Correct |
14 ms |
35540 KB |
Output is correct |
11 |
Correct |
14 ms |
35668 KB |
Output is correct |
12 |
Correct |
14 ms |
35576 KB |
Output is correct |
13 |
Correct |
13 ms |
35668 KB |
Output is correct |
14 |
Correct |
13 ms |
35576 KB |
Output is correct |
15 |
Correct |
13 ms |
35632 KB |
Output is correct |
16 |
Correct |
14 ms |
35592 KB |
Output is correct |
17 |
Correct |
16 ms |
35644 KB |
Output is correct |
18 |
Correct |
14 ms |
35572 KB |
Output is correct |
19 |
Correct |
14 ms |
35656 KB |
Output is correct |
20 |
Correct |
13 ms |
35668 KB |
Output is correct |
21 |
Correct |
14 ms |
35560 KB |
Output is correct |
22 |
Correct |
14 ms |
35668 KB |
Output is correct |
23 |
Correct |
14 ms |
35668 KB |
Output is correct |
24 |
Correct |
14 ms |
35548 KB |
Output is correct |
25 |
Correct |
14 ms |
35540 KB |
Output is correct |
26 |
Correct |
17 ms |
35540 KB |
Output is correct |
27 |
Correct |
14 ms |
35668 KB |
Output is correct |
28 |
Correct |
14 ms |
35668 KB |
Output is correct |
29 |
Correct |
14 ms |
35604 KB |
Output is correct |
30 |
Correct |
14 ms |
35576 KB |
Output is correct |
31 |
Correct |
14 ms |
35552 KB |
Output is correct |
32 |
Correct |
14 ms |
35540 KB |
Output is correct |
33 |
Correct |
14 ms |
35564 KB |
Output is correct |
34 |
Correct |
14 ms |
35668 KB |
Output is correct |
35 |
Correct |
14 ms |
35632 KB |
Output is correct |
36 |
Correct |
15 ms |
35668 KB |
Output is correct |
37 |
Correct |
16 ms |
35592 KB |
Output is correct |
38 |
Correct |
14 ms |
35668 KB |
Output is correct |
39 |
Correct |
14 ms |
35668 KB |
Output is correct |
40 |
Correct |
15 ms |
35668 KB |
Output is correct |
41 |
Correct |
14 ms |
35676 KB |
Output is correct |
42 |
Correct |
18 ms |
35612 KB |
Output is correct |
43 |
Correct |
15 ms |
35656 KB |
Output is correct |
44 |
Correct |
13 ms |
35668 KB |
Output is correct |
45 |
Correct |
13 ms |
35668 KB |
Output is correct |
46 |
Correct |
14 ms |
35668 KB |
Output is correct |
47 |
Correct |
19 ms |
35668 KB |
Output is correct |
48 |
Correct |
14 ms |
35584 KB |
Output is correct |
49 |
Correct |
14 ms |
35668 KB |
Output is correct |
50 |
Correct |
14 ms |
35568 KB |
Output is correct |
51 |
Correct |
14 ms |
35668 KB |
Output is correct |
52 |
Correct |
14 ms |
35592 KB |
Output is correct |
53 |
Correct |
14 ms |
35668 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
14 ms |
35540 KB |
Output is correct |
2 |
Correct |
13 ms |
35540 KB |
Output is correct |
3 |
Correct |
13 ms |
35540 KB |
Output is correct |
4 |
Correct |
13 ms |
35644 KB |
Output is correct |
5 |
Correct |
14 ms |
35568 KB |
Output is correct |
6 |
Correct |
14 ms |
35668 KB |
Output is correct |
7 |
Correct |
13 ms |
35584 KB |
Output is correct |
8 |
Correct |
14 ms |
35672 KB |
Output is correct |
9 |
Correct |
15 ms |
35612 KB |
Output is correct |
10 |
Correct |
14 ms |
35540 KB |
Output is correct |
11 |
Correct |
14 ms |
35668 KB |
Output is correct |
12 |
Correct |
14 ms |
35576 KB |
Output is correct |
13 |
Correct |
13 ms |
35668 KB |
Output is correct |
14 |
Correct |
13 ms |
35576 KB |
Output is correct |
15 |
Correct |
13 ms |
35632 KB |
Output is correct |
16 |
Correct |
14 ms |
35592 KB |
Output is correct |
17 |
Correct |
16 ms |
35644 KB |
Output is correct |
18 |
Correct |
14 ms |
35572 KB |
Output is correct |
19 |
Correct |
14 ms |
35656 KB |
Output is correct |
20 |
Correct |
13 ms |
35668 KB |
Output is correct |
21 |
Correct |
14 ms |
35560 KB |
Output is correct |
22 |
Correct |
14 ms |
35668 KB |
Output is correct |
23 |
Correct |
14 ms |
35668 KB |
Output is correct |
24 |
Correct |
14 ms |
35548 KB |
Output is correct |
25 |
Correct |
14 ms |
35540 KB |
Output is correct |
26 |
Correct |
17 ms |
35540 KB |
Output is correct |
27 |
Correct |
14 ms |
35668 KB |
Output is correct |
28 |
Correct |
14 ms |
35668 KB |
Output is correct |
29 |
Correct |
14 ms |
35604 KB |
Output is correct |
30 |
Correct |
14 ms |
35576 KB |
Output is correct |
31 |
Correct |
14 ms |
35552 KB |
Output is correct |
32 |
Correct |
14 ms |
35540 KB |
Output is correct |
33 |
Correct |
14 ms |
35564 KB |
Output is correct |
34 |
Correct |
14 ms |
35668 KB |
Output is correct |
35 |
Correct |
14 ms |
35632 KB |
Output is correct |
36 |
Correct |
15 ms |
35668 KB |
Output is correct |
37 |
Correct |
16 ms |
35592 KB |
Output is correct |
38 |
Correct |
14 ms |
35668 KB |
Output is correct |
39 |
Correct |
14 ms |
35668 KB |
Output is correct |
40 |
Correct |
15 ms |
35668 KB |
Output is correct |
41 |
Correct |
14 ms |
35676 KB |
Output is correct |
42 |
Correct |
18 ms |
35612 KB |
Output is correct |
43 |
Correct |
15 ms |
35656 KB |
Output is correct |
44 |
Correct |
13 ms |
35668 KB |
Output is correct |
45 |
Correct |
13 ms |
35668 KB |
Output is correct |
46 |
Correct |
14 ms |
35668 KB |
Output is correct |
47 |
Correct |
19 ms |
35668 KB |
Output is correct |
48 |
Correct |
14 ms |
35584 KB |
Output is correct |
49 |
Correct |
14 ms |
35668 KB |
Output is correct |
50 |
Correct |
14 ms |
35568 KB |
Output is correct |
51 |
Correct |
14 ms |
35668 KB |
Output is correct |
52 |
Correct |
14 ms |
35592 KB |
Output is correct |
53 |
Correct |
14 ms |
35668 KB |
Output is correct |
54 |
Correct |
15 ms |
35616 KB |
Output is correct |
55 |
Correct |
15 ms |
35624 KB |
Output is correct |
56 |
Correct |
16 ms |
35796 KB |
Output is correct |
57 |
Correct |
15 ms |
35776 KB |
Output is correct |
58 |
Correct |
35 ms |
40780 KB |
Output is correct |
59 |
Correct |
169 ms |
79780 KB |
Output is correct |
60 |
Correct |
169 ms |
79832 KB |
Output is correct |
61 |
Correct |
168 ms |
79748 KB |
Output is correct |
62 |
Correct |
14 ms |
35652 KB |
Output is correct |
63 |
Correct |
165 ms |
78376 KB |
Output is correct |
64 |
Runtime error |
607 ms |
262144 KB |
Execution killed with signal 9 |
65 |
Halted |
0 ms |
0 KB |
- |