#include "bits/stdc++.h"
using namespace std;
using ll = long long;
// RGW
int n, m;
string s[3005];
int a[3005][3005], b[3005][3005];
vector<int> va[9000005];
int ma[9000005], mb[9000005];
bool visitb[9000005];
int cnt, cnt2;
stack<int> clrS;
bool dfs(int cur) {
for (int nxt : va[cur]) {
if (!visitb[nxt]) {
visitb[nxt] = true;
clrS.push(nxt);
if (mb[nxt] == 0 || dfs(mb[nxt])) {
ma[cur] = nxt;
mb[nxt] = cur;
return true;
}
}
}
return false;
}
int bipartite_matching() {
int ret = 0;
for (int i = 1; i <= cnt; i++) {
while (!clrS.empty()) {
visitb[clrS.top()] = false;
clrS.pop();
}
if (dfs(i)) ++ret;
}
return ret;
}
int main() {
cin.tie(0)->sync_with_stdio(0);
cin >> n >> m;
for (int i = 0; i < n; i++) {
cin >> s[i];
}
cnt = cnt2 = 0;
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (s[i][j] != 'R') continue;
if (j + 2 < m) {
if (s[i][j + 1] == 'G' && s[i][j + 2] == 'W') {
++cnt;
a[i][j] = cnt;
a[i][j + 1] = cnt;
a[i][j + 2] = cnt;
}
}
if (i + 2 < n) {
if (s[i + 1][j] == 'G' && s[i + 2][j] == 'W') {
++cnt2;
b[i][j]= cnt2;
b[i + 1][j]= cnt2;
b[i + 2][j]= cnt2;
}
}
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (a[i][j] != 0 && b[i][j] != 0) {
va[a[i][j]].push_back(b[i][j]);
}
}
}
cout << cnt + cnt2 - bipartite_matching() << endl;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
98 ms |
211724 KB |
Output is correct |
2 |
Correct |
117 ms |
211736 KB |
Output is correct |
3 |
Correct |
104 ms |
211756 KB |
Output is correct |
4 |
Correct |
99 ms |
211688 KB |
Output is correct |
5 |
Correct |
96 ms |
211716 KB |
Output is correct |
6 |
Correct |
97 ms |
211724 KB |
Output is correct |
7 |
Correct |
96 ms |
211804 KB |
Output is correct |
8 |
Correct |
96 ms |
211784 KB |
Output is correct |
9 |
Correct |
97 ms |
211756 KB |
Output is correct |
10 |
Correct |
106 ms |
211656 KB |
Output is correct |
11 |
Correct |
96 ms |
211788 KB |
Output is correct |
12 |
Correct |
96 ms |
211792 KB |
Output is correct |
13 |
Correct |
97 ms |
211720 KB |
Output is correct |
14 |
Correct |
107 ms |
211780 KB |
Output is correct |
15 |
Correct |
98 ms |
211756 KB |
Output is correct |
16 |
Correct |
99 ms |
211740 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
98 ms |
211724 KB |
Output is correct |
2 |
Correct |
117 ms |
211736 KB |
Output is correct |
3 |
Correct |
104 ms |
211756 KB |
Output is correct |
4 |
Correct |
99 ms |
211688 KB |
Output is correct |
5 |
Correct |
96 ms |
211716 KB |
Output is correct |
6 |
Correct |
97 ms |
211724 KB |
Output is correct |
7 |
Correct |
96 ms |
211804 KB |
Output is correct |
8 |
Correct |
96 ms |
211784 KB |
Output is correct |
9 |
Correct |
97 ms |
211756 KB |
Output is correct |
10 |
Correct |
106 ms |
211656 KB |
Output is correct |
11 |
Correct |
96 ms |
211788 KB |
Output is correct |
12 |
Correct |
96 ms |
211792 KB |
Output is correct |
13 |
Correct |
97 ms |
211720 KB |
Output is correct |
14 |
Correct |
107 ms |
211780 KB |
Output is correct |
15 |
Correct |
98 ms |
211756 KB |
Output is correct |
16 |
Correct |
99 ms |
211740 KB |
Output is correct |
17 |
Correct |
110 ms |
211736 KB |
Output is correct |
18 |
Correct |
105 ms |
211784 KB |
Output is correct |
19 |
Correct |
112 ms |
211788 KB |
Output is correct |
20 |
Correct |
96 ms |
211776 KB |
Output is correct |
21 |
Correct |
94 ms |
211904 KB |
Output is correct |
22 |
Correct |
97 ms |
211788 KB |
Output is correct |
23 |
Correct |
99 ms |
211760 KB |
Output is correct |
24 |
Correct |
97 ms |
211848 KB |
Output is correct |
25 |
Correct |
97 ms |
211656 KB |
Output is correct |
26 |
Correct |
98 ms |
211676 KB |
Output is correct |
27 |
Correct |
96 ms |
211804 KB |
Output is correct |
28 |
Correct |
106 ms |
211788 KB |
Output is correct |
29 |
Correct |
108 ms |
211760 KB |
Output is correct |
30 |
Correct |
96 ms |
211724 KB |
Output is correct |
31 |
Correct |
106 ms |
211736 KB |
Output is correct |
32 |
Correct |
98 ms |
211724 KB |
Output is correct |
33 |
Correct |
103 ms |
211788 KB |
Output is correct |
34 |
Correct |
100 ms |
211788 KB |
Output is correct |
35 |
Correct |
96 ms |
211792 KB |
Output is correct |
36 |
Correct |
107 ms |
211796 KB |
Output is correct |
37 |
Correct |
104 ms |
211856 KB |
Output is correct |
38 |
Correct |
97 ms |
211852 KB |
Output is correct |
39 |
Correct |
97 ms |
211916 KB |
Output is correct |
40 |
Correct |
95 ms |
211788 KB |
Output is correct |
41 |
Correct |
98 ms |
211816 KB |
Output is correct |
42 |
Correct |
99 ms |
211844 KB |
Output is correct |
43 |
Correct |
95 ms |
211840 KB |
Output is correct |
44 |
Correct |
100 ms |
211816 KB |
Output is correct |
45 |
Correct |
99 ms |
211860 KB |
Output is correct |
46 |
Correct |
97 ms |
211744 KB |
Output is correct |
47 |
Correct |
94 ms |
211956 KB |
Output is correct |
48 |
Correct |
97 ms |
211884 KB |
Output is correct |
49 |
Correct |
99 ms |
211788 KB |
Output is correct |
50 |
Correct |
108 ms |
211812 KB |
Output is correct |
51 |
Correct |
97 ms |
211852 KB |
Output is correct |
52 |
Correct |
102 ms |
211872 KB |
Output is correct |
53 |
Correct |
96 ms |
211804 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
98 ms |
211724 KB |
Output is correct |
2 |
Correct |
117 ms |
211736 KB |
Output is correct |
3 |
Correct |
104 ms |
211756 KB |
Output is correct |
4 |
Correct |
99 ms |
211688 KB |
Output is correct |
5 |
Correct |
96 ms |
211716 KB |
Output is correct |
6 |
Correct |
97 ms |
211724 KB |
Output is correct |
7 |
Correct |
96 ms |
211804 KB |
Output is correct |
8 |
Correct |
96 ms |
211784 KB |
Output is correct |
9 |
Correct |
97 ms |
211756 KB |
Output is correct |
10 |
Correct |
106 ms |
211656 KB |
Output is correct |
11 |
Correct |
96 ms |
211788 KB |
Output is correct |
12 |
Correct |
96 ms |
211792 KB |
Output is correct |
13 |
Correct |
97 ms |
211720 KB |
Output is correct |
14 |
Correct |
107 ms |
211780 KB |
Output is correct |
15 |
Correct |
98 ms |
211756 KB |
Output is correct |
16 |
Correct |
99 ms |
211740 KB |
Output is correct |
17 |
Correct |
110 ms |
211736 KB |
Output is correct |
18 |
Correct |
105 ms |
211784 KB |
Output is correct |
19 |
Correct |
112 ms |
211788 KB |
Output is correct |
20 |
Correct |
96 ms |
211776 KB |
Output is correct |
21 |
Correct |
94 ms |
211904 KB |
Output is correct |
22 |
Correct |
97 ms |
211788 KB |
Output is correct |
23 |
Correct |
99 ms |
211760 KB |
Output is correct |
24 |
Correct |
97 ms |
211848 KB |
Output is correct |
25 |
Correct |
97 ms |
211656 KB |
Output is correct |
26 |
Correct |
98 ms |
211676 KB |
Output is correct |
27 |
Correct |
96 ms |
211804 KB |
Output is correct |
28 |
Correct |
106 ms |
211788 KB |
Output is correct |
29 |
Correct |
108 ms |
211760 KB |
Output is correct |
30 |
Correct |
96 ms |
211724 KB |
Output is correct |
31 |
Correct |
106 ms |
211736 KB |
Output is correct |
32 |
Correct |
98 ms |
211724 KB |
Output is correct |
33 |
Correct |
103 ms |
211788 KB |
Output is correct |
34 |
Correct |
100 ms |
211788 KB |
Output is correct |
35 |
Correct |
96 ms |
211792 KB |
Output is correct |
36 |
Correct |
107 ms |
211796 KB |
Output is correct |
37 |
Correct |
104 ms |
211856 KB |
Output is correct |
38 |
Correct |
97 ms |
211852 KB |
Output is correct |
39 |
Correct |
97 ms |
211916 KB |
Output is correct |
40 |
Correct |
95 ms |
211788 KB |
Output is correct |
41 |
Correct |
98 ms |
211816 KB |
Output is correct |
42 |
Correct |
99 ms |
211844 KB |
Output is correct |
43 |
Correct |
95 ms |
211840 KB |
Output is correct |
44 |
Correct |
100 ms |
211816 KB |
Output is correct |
45 |
Correct |
99 ms |
211860 KB |
Output is correct |
46 |
Correct |
97 ms |
211744 KB |
Output is correct |
47 |
Correct |
94 ms |
211956 KB |
Output is correct |
48 |
Correct |
97 ms |
211884 KB |
Output is correct |
49 |
Correct |
99 ms |
211788 KB |
Output is correct |
50 |
Correct |
108 ms |
211812 KB |
Output is correct |
51 |
Correct |
97 ms |
211852 KB |
Output is correct |
52 |
Correct |
102 ms |
211872 KB |
Output is correct |
53 |
Correct |
96 ms |
211804 KB |
Output is correct |
54 |
Correct |
96 ms |
211776 KB |
Output is correct |
55 |
Correct |
102 ms |
213136 KB |
Output is correct |
56 |
Correct |
97 ms |
211912 KB |
Output is correct |
57 |
Correct |
101 ms |
224460 KB |
Output is correct |
58 |
Correct |
117 ms |
229140 KB |
Output is correct |
59 |
Runtime error |
143 ms |
262144 KB |
Execution killed with signal 9 |
60 |
Halted |
0 ms |
0 KB |
- |