#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
#define all(a) a.begin(), a.end()
const int LIM=3e3+7;
string T[LIM];
int ok[LIM][LIM], odw[LIM][LIM];
int main() {
ios_base::sync_with_stdio(0); cin.tie(0);
int n, m;
cin >> n >> m;
rep(i, n) cin >> T[i];
rep(i, n) rep(j, m) if(T[i][j]=='G') {
if(i && i<n-1 && T[i-1][j]=='R' && T[i+1][j]=='W') ok[i][j]|=1;
if(j && j<m-1 && T[i][j-1]=='R' && T[i][j+1]=='W') ok[i][j]|=2;
}
int ans=0;
rep(i, n) rep(j, m) if(ok[i][j] && !odw[i][j]) {
odw[i][j]=1;
int dp[2][3];
dp[1][0]=dp[1][1]=dp[1][2]=0;
if(ok[i][j]&1) ++dp[1][1];
if(ok[i][j]&2) ++dp[1][2];
int a=i, b=j;
while(a<n-1) {
++a;
if(b && (ok[a-1][b]|ok[a][b-1])==3) --b;
else if(b<m-1 && (ok[a-1][b]|ok[a][b+1])==3) ++b;
else break;
odw[a][b]=1;
rep(l, 3) {
dp[0][l]=dp[1][l];
dp[1][l]=0;
}
dp[1][0]=max(dp[0][0], max(dp[0][1], dp[0][2]));
if(ok[a][b]&1) dp[1][1]=max(dp[0][0], dp[0][1])+1;
if(ok[a][b]&2) dp[1][2]=max(dp[0][0], dp[0][2])+1;
}
ans+=max(dp[1][0], max(dp[1][1], dp[1][2]));
}
cout << ans << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
320 KB |
Output is correct |
12 |
Correct |
0 ms |
332 KB |
Output is correct |
13 |
Correct |
0 ms |
332 KB |
Output is correct |
14 |
Correct |
1 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
320 KB |
Output is correct |
12 |
Correct |
0 ms |
332 KB |
Output is correct |
13 |
Correct |
0 ms |
332 KB |
Output is correct |
14 |
Correct |
1 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
1 ms |
332 KB |
Output is correct |
19 |
Correct |
1 ms |
460 KB |
Output is correct |
20 |
Correct |
1 ms |
460 KB |
Output is correct |
21 |
Correct |
1 ms |
460 KB |
Output is correct |
22 |
Correct |
1 ms |
412 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
1 ms |
416 KB |
Output is correct |
25 |
Correct |
1 ms |
420 KB |
Output is correct |
26 |
Correct |
1 ms |
332 KB |
Output is correct |
27 |
Correct |
1 ms |
416 KB |
Output is correct |
28 |
Correct |
1 ms |
460 KB |
Output is correct |
29 |
Correct |
1 ms |
460 KB |
Output is correct |
30 |
Correct |
1 ms |
408 KB |
Output is correct |
31 |
Correct |
1 ms |
332 KB |
Output is correct |
32 |
Correct |
0 ms |
416 KB |
Output is correct |
33 |
Correct |
1 ms |
416 KB |
Output is correct |
34 |
Correct |
1 ms |
412 KB |
Output is correct |
35 |
Correct |
0 ms |
460 KB |
Output is correct |
36 |
Correct |
0 ms |
460 KB |
Output is correct |
37 |
Correct |
1 ms |
460 KB |
Output is correct |
38 |
Correct |
1 ms |
460 KB |
Output is correct |
39 |
Correct |
0 ms |
412 KB |
Output is correct |
40 |
Correct |
1 ms |
460 KB |
Output is correct |
41 |
Correct |
1 ms |
384 KB |
Output is correct |
42 |
Correct |
1 ms |
460 KB |
Output is correct |
43 |
Correct |
1 ms |
460 KB |
Output is correct |
44 |
Correct |
1 ms |
460 KB |
Output is correct |
45 |
Correct |
1 ms |
460 KB |
Output is correct |
46 |
Correct |
1 ms |
460 KB |
Output is correct |
47 |
Correct |
1 ms |
460 KB |
Output is correct |
48 |
Correct |
1 ms |
460 KB |
Output is correct |
49 |
Correct |
1 ms |
460 KB |
Output is correct |
50 |
Correct |
1 ms |
412 KB |
Output is correct |
51 |
Correct |
1 ms |
460 KB |
Output is correct |
52 |
Correct |
1 ms |
460 KB |
Output is correct |
53 |
Correct |
1 ms |
460 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
332 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
0 ms |
332 KB |
Output is correct |
9 |
Correct |
0 ms |
332 KB |
Output is correct |
10 |
Correct |
0 ms |
332 KB |
Output is correct |
11 |
Correct |
0 ms |
320 KB |
Output is correct |
12 |
Correct |
0 ms |
332 KB |
Output is correct |
13 |
Correct |
0 ms |
332 KB |
Output is correct |
14 |
Correct |
1 ms |
332 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
1 ms |
332 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
1 ms |
332 KB |
Output is correct |
19 |
Correct |
1 ms |
460 KB |
Output is correct |
20 |
Correct |
1 ms |
460 KB |
Output is correct |
21 |
Correct |
1 ms |
460 KB |
Output is correct |
22 |
Correct |
1 ms |
412 KB |
Output is correct |
23 |
Correct |
1 ms |
332 KB |
Output is correct |
24 |
Correct |
1 ms |
416 KB |
Output is correct |
25 |
Correct |
1 ms |
420 KB |
Output is correct |
26 |
Correct |
1 ms |
332 KB |
Output is correct |
27 |
Correct |
1 ms |
416 KB |
Output is correct |
28 |
Correct |
1 ms |
460 KB |
Output is correct |
29 |
Correct |
1 ms |
460 KB |
Output is correct |
30 |
Correct |
1 ms |
408 KB |
Output is correct |
31 |
Correct |
1 ms |
332 KB |
Output is correct |
32 |
Correct |
0 ms |
416 KB |
Output is correct |
33 |
Correct |
1 ms |
416 KB |
Output is correct |
34 |
Correct |
1 ms |
412 KB |
Output is correct |
35 |
Correct |
0 ms |
460 KB |
Output is correct |
36 |
Correct |
0 ms |
460 KB |
Output is correct |
37 |
Correct |
1 ms |
460 KB |
Output is correct |
38 |
Correct |
1 ms |
460 KB |
Output is correct |
39 |
Correct |
0 ms |
412 KB |
Output is correct |
40 |
Correct |
1 ms |
460 KB |
Output is correct |
41 |
Correct |
1 ms |
384 KB |
Output is correct |
42 |
Correct |
1 ms |
460 KB |
Output is correct |
43 |
Correct |
1 ms |
460 KB |
Output is correct |
44 |
Correct |
1 ms |
460 KB |
Output is correct |
45 |
Correct |
1 ms |
460 KB |
Output is correct |
46 |
Correct |
1 ms |
460 KB |
Output is correct |
47 |
Correct |
1 ms |
460 KB |
Output is correct |
48 |
Correct |
1 ms |
460 KB |
Output is correct |
49 |
Correct |
1 ms |
460 KB |
Output is correct |
50 |
Correct |
1 ms |
412 KB |
Output is correct |
51 |
Correct |
1 ms |
460 KB |
Output is correct |
52 |
Correct |
1 ms |
460 KB |
Output is correct |
53 |
Correct |
1 ms |
460 KB |
Output is correct |
54 |
Correct |
1 ms |
332 KB |
Output is correct |
55 |
Correct |
2 ms |
1356 KB |
Output is correct |
56 |
Correct |
1 ms |
460 KB |
Output is correct |
57 |
Correct |
7 ms |
14668 KB |
Output is correct |
58 |
Correct |
20 ms |
18064 KB |
Output is correct |
59 |
Correct |
130 ms |
89492 KB |
Output is correct |
60 |
Correct |
145 ms |
87804 KB |
Output is correct |
61 |
Correct |
145 ms |
87844 KB |
Output is correct |
62 |
Correct |
1 ms |
460 KB |
Output is correct |
63 |
Correct |
133 ms |
87620 KB |
Output is correct |
64 |
Correct |
112 ms |
87812 KB |
Output is correct |
65 |
Correct |
112 ms |
87876 KB |
Output is correct |
66 |
Correct |
123 ms |
87880 KB |
Output is correct |
67 |
Correct |
72 ms |
48940 KB |
Output is correct |
68 |
Correct |
75 ms |
48876 KB |
Output is correct |
69 |
Correct |
85 ms |
61724 KB |
Output is correct |
70 |
Correct |
20 ms |
18252 KB |
Output is correct |
71 |
Correct |
15 ms |
18196 KB |
Output is correct |
72 |
Correct |
14 ms |
18212 KB |
Output is correct |
73 |
Correct |
18 ms |
18280 KB |
Output is correct |
74 |
Correct |
15 ms |
18176 KB |
Output is correct |
75 |
Correct |
17 ms |
18224 KB |
Output is correct |
76 |
Correct |
15 ms |
18228 KB |
Output is correct |
77 |
Correct |
14 ms |
18212 KB |
Output is correct |
78 |
Correct |
14 ms |
18212 KB |
Output is correct |
79 |
Correct |
15 ms |
18168 KB |
Output is correct |
80 |
Correct |
16 ms |
18188 KB |
Output is correct |
81 |
Correct |
22 ms |
18164 KB |
Output is correct |
82 |
Correct |
15 ms |
18164 KB |
Output is correct |
83 |
Correct |
15 ms |
18196 KB |
Output is correct |
84 |
Correct |
15 ms |
18192 KB |
Output is correct |
85 |
Correct |
20 ms |
18192 KB |
Output is correct |
86 |
Correct |
15 ms |
18176 KB |
Output is correct |
87 |
Correct |
15 ms |
18168 KB |
Output is correct |
88 |
Correct |
14 ms |
18216 KB |
Output is correct |
89 |
Correct |
13 ms |
18208 KB |
Output is correct |
90 |
Correct |
13 ms |
18244 KB |
Output is correct |