#include <bits/stdc++.h>
using namespace std;
//#pragma GCC optimize ("O3")
//#pragma GCC target ("sse4")
#define endl "\n"
typedef long long ll;
template<class T, class T2> inline ostream &operator <<(ostream &out, const pair<T, T2> &x) { out << x.first << " " << x.second; return out;}
template<class T, class T2> inline istream &operator >>(istream &in, pair<T, T2> &x) { in >> x.first >> x.second; return in;}
template<class T, class T2> inline bool chkmax(T &x, const T2 &y) { return x < y ? x = y, 1 : 0; }
template<class T, class T2> inline bool chkmin(T &x, const T2 &y) { return x > y ? x = y, 1 : 0; }
const ll mod = 1e9 + 7;
#define out(x) "{" << (#x) << ": " << x << "} "
const ll MAX_N = 3e3 + 10;
string arr[MAX_N];
ll n, m;
bool down[MAX_N][MAX_N], rght[MAX_N][MAX_N];
vector<ll> diag[MAX_N * 2];
signed main() {
ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
cin >> n >> m;
for(ll i = 0; i < n; i ++) {
cin >> arr[i];
}
for(ll i = 0; i < n; i ++) {
for(ll j = 1; j < m - 1; j ++) {
rght[i][j] = arr[i][j - 1] == 'R' && arr[i][j] == 'G' && arr[i][j + 1] == 'W';
}
}
for(ll j = 0; j < m; j ++) {
for(ll i = 1; i < n - 1; i ++) {
down[i][j] = arr[i - 1][j] == 'R' && arr[i][j] == 'G' && arr[i + 1][j] == 'W';
}
}
for(ll i = 0; i < n; i ++) {
for(ll j = 0; j < m; j ++) {
diag[i + j].push_back(((ll)down[i][j] << 1) + (ll)rght[i][j]);
}
}
ll cnt = 0;
for(ll i = 0; i < n + m; i ++) {
ll dp[3] = {0, 0, 0};
ll curr[3] = {0, 0, 0};
for(auto it : diag[i]) {
if(it & (1 << 1)) {
curr[1] = max(dp[1], dp[0]) + 1;
}
if(it & 1) {
curr[2] = max(dp[2], dp[0]) + 1;
}
curr[0] = max({dp[0], dp[1], dp[2]});
for(ll i = 0; i < 3; i ++) {dp[i] = curr[i]; curr[i] = 0;}
}
cnt += max({dp[0], dp[1], dp[2]});
}
cout << cnt << endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
512 KB |
Output is correct |
2 |
Correct |
1 ms |
640 KB |
Output is correct |
3 |
Correct |
0 ms |
512 KB |
Output is correct |
4 |
Correct |
1 ms |
640 KB |
Output is correct |
5 |
Correct |
1 ms |
640 KB |
Output is correct |
6 |
Correct |
1 ms |
640 KB |
Output is correct |
7 |
Correct |
1 ms |
640 KB |
Output is correct |
8 |
Correct |
1 ms |
640 KB |
Output is correct |
9 |
Correct |
1 ms |
640 KB |
Output is correct |
10 |
Correct |
1 ms |
640 KB |
Output is correct |
11 |
Correct |
1 ms |
640 KB |
Output is correct |
12 |
Correct |
1 ms |
640 KB |
Output is correct |
13 |
Correct |
1 ms |
640 KB |
Output is correct |
14 |
Correct |
1 ms |
640 KB |
Output is correct |
15 |
Correct |
1 ms |
640 KB |
Output is correct |
16 |
Correct |
1 ms |
640 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
512 KB |
Output is correct |
2 |
Correct |
1 ms |
640 KB |
Output is correct |
3 |
Correct |
0 ms |
512 KB |
Output is correct |
4 |
Correct |
1 ms |
640 KB |
Output is correct |
5 |
Correct |
1 ms |
640 KB |
Output is correct |
6 |
Correct |
1 ms |
640 KB |
Output is correct |
7 |
Correct |
1 ms |
640 KB |
Output is correct |
8 |
Correct |
1 ms |
640 KB |
Output is correct |
9 |
Correct |
1 ms |
640 KB |
Output is correct |
10 |
Correct |
1 ms |
640 KB |
Output is correct |
11 |
Correct |
1 ms |
640 KB |
Output is correct |
12 |
Correct |
1 ms |
640 KB |
Output is correct |
13 |
Correct |
1 ms |
640 KB |
Output is correct |
14 |
Correct |
1 ms |
640 KB |
Output is correct |
15 |
Correct |
1 ms |
640 KB |
Output is correct |
16 |
Correct |
1 ms |
640 KB |
Output is correct |
17 |
Correct |
1 ms |
640 KB |
Output is correct |
18 |
Correct |
1 ms |
640 KB |
Output is correct |
19 |
Correct |
1 ms |
640 KB |
Output is correct |
20 |
Correct |
1 ms |
640 KB |
Output is correct |
21 |
Correct |
1 ms |
640 KB |
Output is correct |
22 |
Correct |
1 ms |
640 KB |
Output is correct |
23 |
Correct |
1 ms |
640 KB |
Output is correct |
24 |
Correct |
1 ms |
640 KB |
Output is correct |
25 |
Correct |
1 ms |
640 KB |
Output is correct |
26 |
Correct |
1 ms |
512 KB |
Output is correct |
27 |
Correct |
1 ms |
640 KB |
Output is correct |
28 |
Correct |
1 ms |
640 KB |
Output is correct |
29 |
Correct |
1 ms |
640 KB |
Output is correct |
30 |
Correct |
1 ms |
640 KB |
Output is correct |
31 |
Correct |
1 ms |
640 KB |
Output is correct |
32 |
Correct |
1 ms |
640 KB |
Output is correct |
33 |
Correct |
1 ms |
640 KB |
Output is correct |
34 |
Correct |
1 ms |
640 KB |
Output is correct |
35 |
Correct |
1 ms |
640 KB |
Output is correct |
36 |
Correct |
1 ms |
640 KB |
Output is correct |
37 |
Correct |
1 ms |
640 KB |
Output is correct |
38 |
Correct |
1 ms |
640 KB |
Output is correct |
39 |
Correct |
1 ms |
640 KB |
Output is correct |
40 |
Correct |
1 ms |
640 KB |
Output is correct |
41 |
Correct |
1 ms |
640 KB |
Output is correct |
42 |
Correct |
1 ms |
640 KB |
Output is correct |
43 |
Correct |
1 ms |
640 KB |
Output is correct |
44 |
Correct |
1 ms |
640 KB |
Output is correct |
45 |
Correct |
1 ms |
640 KB |
Output is correct |
46 |
Correct |
1 ms |
640 KB |
Output is correct |
47 |
Correct |
1 ms |
640 KB |
Output is correct |
48 |
Correct |
1 ms |
640 KB |
Output is correct |
49 |
Correct |
1 ms |
640 KB |
Output is correct |
50 |
Correct |
1 ms |
640 KB |
Output is correct |
51 |
Correct |
1 ms |
640 KB |
Output is correct |
52 |
Correct |
1 ms |
640 KB |
Output is correct |
53 |
Correct |
1 ms |
640 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
512 KB |
Output is correct |
2 |
Correct |
1 ms |
640 KB |
Output is correct |
3 |
Correct |
0 ms |
512 KB |
Output is correct |
4 |
Correct |
1 ms |
640 KB |
Output is correct |
5 |
Correct |
1 ms |
640 KB |
Output is correct |
6 |
Correct |
1 ms |
640 KB |
Output is correct |
7 |
Correct |
1 ms |
640 KB |
Output is correct |
8 |
Correct |
1 ms |
640 KB |
Output is correct |
9 |
Correct |
1 ms |
640 KB |
Output is correct |
10 |
Correct |
1 ms |
640 KB |
Output is correct |
11 |
Correct |
1 ms |
640 KB |
Output is correct |
12 |
Correct |
1 ms |
640 KB |
Output is correct |
13 |
Correct |
1 ms |
640 KB |
Output is correct |
14 |
Correct |
1 ms |
640 KB |
Output is correct |
15 |
Correct |
1 ms |
640 KB |
Output is correct |
16 |
Correct |
1 ms |
640 KB |
Output is correct |
17 |
Correct |
1 ms |
640 KB |
Output is correct |
18 |
Correct |
1 ms |
640 KB |
Output is correct |
19 |
Correct |
1 ms |
640 KB |
Output is correct |
20 |
Correct |
1 ms |
640 KB |
Output is correct |
21 |
Correct |
1 ms |
640 KB |
Output is correct |
22 |
Correct |
1 ms |
640 KB |
Output is correct |
23 |
Correct |
1 ms |
640 KB |
Output is correct |
24 |
Correct |
1 ms |
640 KB |
Output is correct |
25 |
Correct |
1 ms |
640 KB |
Output is correct |
26 |
Correct |
1 ms |
512 KB |
Output is correct |
27 |
Correct |
1 ms |
640 KB |
Output is correct |
28 |
Correct |
1 ms |
640 KB |
Output is correct |
29 |
Correct |
1 ms |
640 KB |
Output is correct |
30 |
Correct |
1 ms |
640 KB |
Output is correct |
31 |
Correct |
1 ms |
640 KB |
Output is correct |
32 |
Correct |
1 ms |
640 KB |
Output is correct |
33 |
Correct |
1 ms |
640 KB |
Output is correct |
34 |
Correct |
1 ms |
640 KB |
Output is correct |
35 |
Correct |
1 ms |
640 KB |
Output is correct |
36 |
Correct |
1 ms |
640 KB |
Output is correct |
37 |
Correct |
1 ms |
640 KB |
Output is correct |
38 |
Correct |
1 ms |
640 KB |
Output is correct |
39 |
Correct |
1 ms |
640 KB |
Output is correct |
40 |
Correct |
1 ms |
640 KB |
Output is correct |
41 |
Correct |
1 ms |
640 KB |
Output is correct |
42 |
Correct |
1 ms |
640 KB |
Output is correct |
43 |
Correct |
1 ms |
640 KB |
Output is correct |
44 |
Correct |
1 ms |
640 KB |
Output is correct |
45 |
Correct |
1 ms |
640 KB |
Output is correct |
46 |
Correct |
1 ms |
640 KB |
Output is correct |
47 |
Correct |
1 ms |
640 KB |
Output is correct |
48 |
Correct |
1 ms |
640 KB |
Output is correct |
49 |
Correct |
1 ms |
640 KB |
Output is correct |
50 |
Correct |
1 ms |
640 KB |
Output is correct |
51 |
Correct |
1 ms |
640 KB |
Output is correct |
52 |
Correct |
1 ms |
640 KB |
Output is correct |
53 |
Correct |
1 ms |
640 KB |
Output is correct |
54 |
Correct |
1 ms |
672 KB |
Output is correct |
55 |
Correct |
7 ms |
9472 KB |
Output is correct |
56 |
Correct |
2 ms |
896 KB |
Output is correct |
57 |
Correct |
7 ms |
12544 KB |
Output is correct |
58 |
Correct |
35 ms |
19064 KB |
Output is correct |
59 |
Correct |
418 ms |
129272 KB |
Output is correct |
60 |
Correct |
420 ms |
129276 KB |
Output is correct |
61 |
Correct |
419 ms |
129200 KB |
Output is correct |
62 |
Correct |
1 ms |
640 KB |
Output is correct |
63 |
Correct |
411 ms |
125680 KB |
Output is correct |
64 |
Correct |
377 ms |
129272 KB |
Output is correct |
65 |
Correct |
377 ms |
129272 KB |
Output is correct |
66 |
Correct |
378 ms |
129276 KB |
Output is correct |
67 |
Correct |
373 ms |
129272 KB |
Output is correct |
68 |
Correct |
373 ms |
129328 KB |
Output is correct |
69 |
Correct |
376 ms |
129272 KB |
Output is correct |
70 |
Correct |
25 ms |
19080 KB |
Output is correct |
71 |
Correct |
27 ms |
19072 KB |
Output is correct |
72 |
Correct |
25 ms |
19064 KB |
Output is correct |
73 |
Correct |
25 ms |
19072 KB |
Output is correct |
74 |
Correct |
27 ms |
19068 KB |
Output is correct |
75 |
Correct |
25 ms |
19064 KB |
Output is correct |
76 |
Correct |
26 ms |
19072 KB |
Output is correct |
77 |
Correct |
25 ms |
19072 KB |
Output is correct |
78 |
Correct |
25 ms |
19072 KB |
Output is correct |
79 |
Correct |
25 ms |
19072 KB |
Output is correct |
80 |
Correct |
27 ms |
19072 KB |
Output is correct |
81 |
Correct |
25 ms |
19064 KB |
Output is correct |
82 |
Correct |
25 ms |
19064 KB |
Output is correct |
83 |
Correct |
25 ms |
19072 KB |
Output is correct |
84 |
Correct |
25 ms |
19072 KB |
Output is correct |
85 |
Correct |
25 ms |
19072 KB |
Output is correct |
86 |
Correct |
26 ms |
19192 KB |
Output is correct |
87 |
Correct |
27 ms |
19072 KB |
Output is correct |
88 |
Correct |
25 ms |
19072 KB |
Output is correct |
89 |
Correct |
25 ms |
19064 KB |
Output is correct |
90 |
Correct |
26 ms |
19072 KB |
Output is correct |