#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long ll;
typedef pair<int, int> pi;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<pi> vpi;
typedef vector<vi> vvi;
const int inf = 0x3f3f3f3f;
const ll linf = 123456789012345678;
const ll mod = 998244353;
#pragma GCC optimize("Ofast")
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " = " << x << endl
int n, m;
vvi a;
int main(){
cin >> n >> m;
a = vvi(n, vi(m));
for(int i = 0; i < n; i++){
string s;
cin >> s;
for(int j = 0; j < m; j++){
if(s[j] == 'G') a[i][j] = 1;
else if(s[j] == 'W') a[i][j] = 2;
}
}
int ans = 0;
for(int k = 0; k < n+m-1; k++){
int c = k;
int r = 0;
if(c >= m){
r = c-m+1;
c = m-1;
}
vvi dp(min(c+1,n-r)+1, vi(3));
int pos = min(c,n-r-1);
while(r < n && c >= 0){
dp[pos][0] = dp[pos+1][0];
dp[pos][1] = dp[pos+1][0];
dp[pos][2] = dp[pos+1][1];
if(c + 2 < m && a[r][c] == 0 && a[r][c+1] == 1 && a[r][c+2] == 2){
dp[pos][0] = max(dp[pos][0], dp[pos+1][2] + 1);
dp[pos][1] = max(dp[pos][1], dp[pos+1][2] + 1);
dp[pos][2] = max(dp[pos][2], dp[pos+1][2] + 1);
}
if(r + 2 < n && a[r][c] == 0 && a[r+1][c] == 1 && a[r+2][c] == 2){
dp[pos][0] = max(dp[pos][0], dp[pos+1][0] + 1);
}
r++;
c--;
pos--;
}
ans += dp[0][0];
}
cout << ans << "\n";
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
5 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
256 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
256 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
256 KB |
Output is correct |
15 |
Correct |
2 ms |
360 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
5 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
256 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
256 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
256 KB |
Output is correct |
15 |
Correct |
2 ms |
360 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
17 |
Correct |
3 ms |
256 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
3 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
3 ms |
376 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
256 KB |
Output is correct |
25 |
Correct |
2 ms |
256 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
256 KB |
Output is correct |
28 |
Correct |
2 ms |
504 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
0 ms |
376 KB |
Output is correct |
32 |
Correct |
2 ms |
256 KB |
Output is correct |
33 |
Correct |
2 ms |
256 KB |
Output is correct |
34 |
Correct |
3 ms |
252 KB |
Output is correct |
35 |
Correct |
2 ms |
376 KB |
Output is correct |
36 |
Correct |
2 ms |
256 KB |
Output is correct |
37 |
Correct |
3 ms |
376 KB |
Output is correct |
38 |
Correct |
2 ms |
256 KB |
Output is correct |
39 |
Correct |
2 ms |
376 KB |
Output is correct |
40 |
Correct |
2 ms |
256 KB |
Output is correct |
41 |
Correct |
2 ms |
256 KB |
Output is correct |
42 |
Correct |
2 ms |
256 KB |
Output is correct |
43 |
Correct |
2 ms |
256 KB |
Output is correct |
44 |
Correct |
2 ms |
376 KB |
Output is correct |
45 |
Correct |
2 ms |
256 KB |
Output is correct |
46 |
Correct |
2 ms |
376 KB |
Output is correct |
47 |
Correct |
2 ms |
376 KB |
Output is correct |
48 |
Correct |
2 ms |
376 KB |
Output is correct |
49 |
Correct |
2 ms |
256 KB |
Output is correct |
50 |
Correct |
4 ms |
376 KB |
Output is correct |
51 |
Correct |
2 ms |
376 KB |
Output is correct |
52 |
Correct |
2 ms |
376 KB |
Output is correct |
53 |
Correct |
2 ms |
376 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
256 KB |
Output is correct |
4 |
Correct |
2 ms |
376 KB |
Output is correct |
5 |
Correct |
2 ms |
376 KB |
Output is correct |
6 |
Correct |
2 ms |
256 KB |
Output is correct |
7 |
Correct |
2 ms |
376 KB |
Output is correct |
8 |
Correct |
5 ms |
376 KB |
Output is correct |
9 |
Correct |
2 ms |
256 KB |
Output is correct |
10 |
Correct |
2 ms |
376 KB |
Output is correct |
11 |
Correct |
2 ms |
376 KB |
Output is correct |
12 |
Correct |
2 ms |
256 KB |
Output is correct |
13 |
Correct |
2 ms |
256 KB |
Output is correct |
14 |
Correct |
2 ms |
256 KB |
Output is correct |
15 |
Correct |
2 ms |
360 KB |
Output is correct |
16 |
Correct |
2 ms |
376 KB |
Output is correct |
17 |
Correct |
3 ms |
256 KB |
Output is correct |
18 |
Correct |
2 ms |
256 KB |
Output is correct |
19 |
Correct |
3 ms |
376 KB |
Output is correct |
20 |
Correct |
2 ms |
376 KB |
Output is correct |
21 |
Correct |
3 ms |
376 KB |
Output is correct |
22 |
Correct |
2 ms |
376 KB |
Output is correct |
23 |
Correct |
2 ms |
376 KB |
Output is correct |
24 |
Correct |
2 ms |
256 KB |
Output is correct |
25 |
Correct |
2 ms |
256 KB |
Output is correct |
26 |
Correct |
2 ms |
376 KB |
Output is correct |
27 |
Correct |
2 ms |
256 KB |
Output is correct |
28 |
Correct |
2 ms |
504 KB |
Output is correct |
29 |
Correct |
2 ms |
376 KB |
Output is correct |
30 |
Correct |
2 ms |
376 KB |
Output is correct |
31 |
Correct |
0 ms |
376 KB |
Output is correct |
32 |
Correct |
2 ms |
256 KB |
Output is correct |
33 |
Correct |
2 ms |
256 KB |
Output is correct |
34 |
Correct |
3 ms |
252 KB |
Output is correct |
35 |
Correct |
2 ms |
376 KB |
Output is correct |
36 |
Correct |
2 ms |
256 KB |
Output is correct |
37 |
Correct |
3 ms |
376 KB |
Output is correct |
38 |
Correct |
2 ms |
256 KB |
Output is correct |
39 |
Correct |
2 ms |
376 KB |
Output is correct |
40 |
Correct |
2 ms |
256 KB |
Output is correct |
41 |
Correct |
2 ms |
256 KB |
Output is correct |
42 |
Correct |
2 ms |
256 KB |
Output is correct |
43 |
Correct |
2 ms |
256 KB |
Output is correct |
44 |
Correct |
2 ms |
376 KB |
Output is correct |
45 |
Correct |
2 ms |
256 KB |
Output is correct |
46 |
Correct |
2 ms |
376 KB |
Output is correct |
47 |
Correct |
2 ms |
376 KB |
Output is correct |
48 |
Correct |
2 ms |
376 KB |
Output is correct |
49 |
Correct |
2 ms |
256 KB |
Output is correct |
50 |
Correct |
4 ms |
376 KB |
Output is correct |
51 |
Correct |
2 ms |
376 KB |
Output is correct |
52 |
Correct |
2 ms |
376 KB |
Output is correct |
53 |
Correct |
2 ms |
376 KB |
Output is correct |
54 |
Correct |
3 ms |
376 KB |
Output is correct |
55 |
Correct |
7 ms |
504 KB |
Output is correct |
56 |
Correct |
8 ms |
376 KB |
Output is correct |
57 |
Correct |
5 ms |
504 KB |
Output is correct |
58 |
Correct |
149 ms |
5240 KB |
Output is correct |
59 |
Correct |
1347 ms |
44796 KB |
Output is correct |
60 |
Correct |
1363 ms |
44876 KB |
Output is correct |
61 |
Correct |
1345 ms |
44852 KB |
Output is correct |
62 |
Correct |
3 ms |
376 KB |
Output is correct |
63 |
Correct |
1312 ms |
43376 KB |
Output is correct |
64 |
Correct |
1211 ms |
44888 KB |
Output is correct |
65 |
Correct |
1199 ms |
44744 KB |
Output is correct |
66 |
Correct |
1199 ms |
44884 KB |
Output is correct |
67 |
Correct |
1221 ms |
44824 KB |
Output is correct |
68 |
Correct |
1212 ms |
44680 KB |
Output is correct |
69 |
Correct |
1211 ms |
44712 KB |
Output is correct |
70 |
Correct |
133 ms |
5368 KB |
Output is correct |
71 |
Correct |
132 ms |
5240 KB |
Output is correct |
72 |
Correct |
137 ms |
5368 KB |
Output is correct |
73 |
Correct |
133 ms |
5236 KB |
Output is correct |
74 |
Correct |
133 ms |
5240 KB |
Output is correct |
75 |
Correct |
133 ms |
5224 KB |
Output is correct |
76 |
Correct |
133 ms |
5368 KB |
Output is correct |
77 |
Correct |
134 ms |
5328 KB |
Output is correct |
78 |
Correct |
134 ms |
5424 KB |
Output is correct |
79 |
Correct |
133 ms |
5212 KB |
Output is correct |
80 |
Correct |
134 ms |
5240 KB |
Output is correct |
81 |
Correct |
137 ms |
5240 KB |
Output is correct |
82 |
Correct |
135 ms |
5360 KB |
Output is correct |
83 |
Correct |
133 ms |
5240 KB |
Output is correct |
84 |
Correct |
135 ms |
5324 KB |
Output is correct |
85 |
Correct |
135 ms |
5400 KB |
Output is correct |
86 |
Correct |
133 ms |
5228 KB |
Output is correct |
87 |
Correct |
135 ms |
5288 KB |
Output is correct |
88 |
Correct |
134 ms |
5396 KB |
Output is correct |
89 |
Correct |
136 ms |
5468 KB |
Output is correct |
90 |
Correct |
133 ms |
5304 KB |
Output is correct |