#include <bits/stdc++.h>
#define task "D"
#define all(v) (v).begin(), (v).end()
#define rep(i, l, r) for (int i = (l); i <= (r); ++i)
#define Rep(i, r, l) for (int i = (r); i >= (l); --i)
#define DB(X) { cerr << #X << " = " << (X) << '\n'; }
#define DB1(A, _) { cerr << #A << "[" << _ << "] = " << (A[_]) << '\n'; }
#define DB2(A, _, __) { cerr << #A << "[" << _ << "][" << __ << "] = " << (A[_][__]) << '\n'; }
#define DB3(A, _, __, ___) { cerr << #A << "[" << _ << "][" << __ << "][" << ___ << "] = " << (A[_][__][___]) << '\n'; }
#define PR(A, l, r) { cerr << '\n'; rep(_, l, r) DB1(A, _); cerr << '\n';}
#define SZ(x) ((int)(x).size())
#define pb push_back
#define eb emplace_back
#define pf push_front
#define F first
#define S second
#define by(x) [](const auto& a, const auto& b) { return a.x < b.x; } // sort(arr, arr + N, by(a));
#define next ___next
#define prev ___prev
#define y1 ___y1
#define left ___left
#define right ___right
#define y0 ___y0
#define div ___div
#define j0 ___j0
#define jn ___jn
using ll = long long;
using ld = long double;
using ull = unsigned long long;
using namespace std;
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<ll> vl;
const int N = 3002;
int n, m, dp[N][3];
bool up[N][N], ri[N][N];
string s[N];
int main()
{
#ifdef HynDuf
freopen(task".in", "r", stdin);
//freopen(task".out", "w", stdout);
#else
ios_base::sync_with_stdio(false); cin.tie(nullptr);
#endif
cin >> n >> m;
rep(i, 1, n)
{
cin >> s[i];
s[i] = '0' + s[i];
}
rep(i, 1, n) rep(j, 1, m)
{
if (i > 1 && i < n) up[i][j] = (s[i][j] == 'G' && s[i - 1][j] == 'R' && s[i + 1][j] == 'W');
if (j > 1 && j < m) ri[i][j] = (s[i][j] == 'G' && s[i][j - 1] == 'R' && s[i][j + 1] == 'W');
}
int ans = 0;
rep(diag, 2, m)
{
int i = 1, j = diag;
rep(t, 0, n) dp[t][0] = dp[t][1] = dp[t][2] = 0;
rep(t, 1, n)
{
if (up[i][j]) dp[t][1] = max(dp[t - 1][0], dp[t - 1][1]) + 1;
if (ri[i][j]) dp[t][2] = max(dp[t - 1][0], dp[t - 1][2]) + 1;
dp[t][0] = max({dp[t - 1][0], dp[t - 1][1], dp[t - 1][2]});
if (i == n || j == 1)
{
ans += max({dp[t][0], dp[t][1], dp[t][2]});
break;
}
i++, j--;
}
}
rep(diag, 2, n)
{
int i = diag, j = m;
rep(t, 0, n) dp[t][0] = dp[t][1] = dp[t][2] = 0;
rep(t, 1, n)
{
if (up[i][j]) dp[t][1] = max(dp[t - 1][0], dp[t - 1][1]) + 1;
if (ri[i][j]) dp[t][2] = max(dp[t - 1][0], dp[t - 1][2]) + 1;
dp[t][0] = max({dp[t - 1][0], dp[t - 1][1], dp[t - 1][2]});
if (i == n || j == 1)
{
ans += max({dp[t][0], dp[t][1], dp[t][2]});
break;
}
i++, j--;
}
}
cout << ans;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
512 KB |
Output is correct |
3 |
Correct |
1 ms |
512 KB |
Output is correct |
4 |
Correct |
0 ms |
384 KB |
Output is correct |
5 |
Correct |
0 ms |
512 KB |
Output is correct |
6 |
Correct |
1 ms |
512 KB |
Output is correct |
7 |
Correct |
1 ms |
512 KB |
Output is correct |
8 |
Correct |
1 ms |
512 KB |
Output is correct |
9 |
Correct |
1 ms |
512 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
512 KB |
Output is correct |
12 |
Correct |
1 ms |
512 KB |
Output is correct |
13 |
Correct |
1 ms |
512 KB |
Output is correct |
14 |
Correct |
1 ms |
512 KB |
Output is correct |
15 |
Correct |
1 ms |
512 KB |
Output is correct |
16 |
Correct |
1 ms |
512 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
512 KB |
Output is correct |
3 |
Correct |
1 ms |
512 KB |
Output is correct |
4 |
Correct |
0 ms |
384 KB |
Output is correct |
5 |
Correct |
0 ms |
512 KB |
Output is correct |
6 |
Correct |
1 ms |
512 KB |
Output is correct |
7 |
Correct |
1 ms |
512 KB |
Output is correct |
8 |
Correct |
1 ms |
512 KB |
Output is correct |
9 |
Correct |
1 ms |
512 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
512 KB |
Output is correct |
12 |
Correct |
1 ms |
512 KB |
Output is correct |
13 |
Correct |
1 ms |
512 KB |
Output is correct |
14 |
Correct |
1 ms |
512 KB |
Output is correct |
15 |
Correct |
1 ms |
512 KB |
Output is correct |
16 |
Correct |
1 ms |
512 KB |
Output is correct |
17 |
Correct |
1 ms |
512 KB |
Output is correct |
18 |
Correct |
1 ms |
512 KB |
Output is correct |
19 |
Correct |
1 ms |
512 KB |
Output is correct |
20 |
Correct |
1 ms |
512 KB |
Output is correct |
21 |
Correct |
1 ms |
512 KB |
Output is correct |
22 |
Correct |
1 ms |
512 KB |
Output is correct |
23 |
Correct |
1 ms |
512 KB |
Output is correct |
24 |
Correct |
1 ms |
544 KB |
Output is correct |
25 |
Correct |
1 ms |
512 KB |
Output is correct |
26 |
Correct |
1 ms |
384 KB |
Output is correct |
27 |
Correct |
1 ms |
512 KB |
Output is correct |
28 |
Correct |
1 ms |
512 KB |
Output is correct |
29 |
Correct |
1 ms |
512 KB |
Output is correct |
30 |
Correct |
1 ms |
512 KB |
Output is correct |
31 |
Correct |
1 ms |
512 KB |
Output is correct |
32 |
Correct |
1 ms |
512 KB |
Output is correct |
33 |
Correct |
1 ms |
512 KB |
Output is correct |
34 |
Correct |
1 ms |
512 KB |
Output is correct |
35 |
Correct |
1 ms |
512 KB |
Output is correct |
36 |
Correct |
1 ms |
512 KB |
Output is correct |
37 |
Correct |
1 ms |
512 KB |
Output is correct |
38 |
Correct |
1 ms |
512 KB |
Output is correct |
39 |
Correct |
1 ms |
512 KB |
Output is correct |
40 |
Correct |
1 ms |
512 KB |
Output is correct |
41 |
Correct |
1 ms |
512 KB |
Output is correct |
42 |
Correct |
1 ms |
512 KB |
Output is correct |
43 |
Correct |
1 ms |
512 KB |
Output is correct |
44 |
Correct |
1 ms |
512 KB |
Output is correct |
45 |
Correct |
1 ms |
512 KB |
Output is correct |
46 |
Correct |
1 ms |
512 KB |
Output is correct |
47 |
Correct |
1 ms |
512 KB |
Output is correct |
48 |
Correct |
1 ms |
512 KB |
Output is correct |
49 |
Correct |
1 ms |
512 KB |
Output is correct |
50 |
Correct |
1 ms |
512 KB |
Output is correct |
51 |
Correct |
1 ms |
512 KB |
Output is correct |
52 |
Correct |
1 ms |
512 KB |
Output is correct |
53 |
Correct |
1 ms |
512 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Correct |
1 ms |
512 KB |
Output is correct |
3 |
Correct |
1 ms |
512 KB |
Output is correct |
4 |
Correct |
0 ms |
384 KB |
Output is correct |
5 |
Correct |
0 ms |
512 KB |
Output is correct |
6 |
Correct |
1 ms |
512 KB |
Output is correct |
7 |
Correct |
1 ms |
512 KB |
Output is correct |
8 |
Correct |
1 ms |
512 KB |
Output is correct |
9 |
Correct |
1 ms |
512 KB |
Output is correct |
10 |
Correct |
1 ms |
384 KB |
Output is correct |
11 |
Correct |
1 ms |
512 KB |
Output is correct |
12 |
Correct |
1 ms |
512 KB |
Output is correct |
13 |
Correct |
1 ms |
512 KB |
Output is correct |
14 |
Correct |
1 ms |
512 KB |
Output is correct |
15 |
Correct |
1 ms |
512 KB |
Output is correct |
16 |
Correct |
1 ms |
512 KB |
Output is correct |
17 |
Correct |
1 ms |
512 KB |
Output is correct |
18 |
Correct |
1 ms |
512 KB |
Output is correct |
19 |
Correct |
1 ms |
512 KB |
Output is correct |
20 |
Correct |
1 ms |
512 KB |
Output is correct |
21 |
Correct |
1 ms |
512 KB |
Output is correct |
22 |
Correct |
1 ms |
512 KB |
Output is correct |
23 |
Correct |
1 ms |
512 KB |
Output is correct |
24 |
Correct |
1 ms |
544 KB |
Output is correct |
25 |
Correct |
1 ms |
512 KB |
Output is correct |
26 |
Correct |
1 ms |
384 KB |
Output is correct |
27 |
Correct |
1 ms |
512 KB |
Output is correct |
28 |
Correct |
1 ms |
512 KB |
Output is correct |
29 |
Correct |
1 ms |
512 KB |
Output is correct |
30 |
Correct |
1 ms |
512 KB |
Output is correct |
31 |
Correct |
1 ms |
512 KB |
Output is correct |
32 |
Correct |
1 ms |
512 KB |
Output is correct |
33 |
Correct |
1 ms |
512 KB |
Output is correct |
34 |
Correct |
1 ms |
512 KB |
Output is correct |
35 |
Correct |
1 ms |
512 KB |
Output is correct |
36 |
Correct |
1 ms |
512 KB |
Output is correct |
37 |
Correct |
1 ms |
512 KB |
Output is correct |
38 |
Correct |
1 ms |
512 KB |
Output is correct |
39 |
Correct |
1 ms |
512 KB |
Output is correct |
40 |
Correct |
1 ms |
512 KB |
Output is correct |
41 |
Correct |
1 ms |
512 KB |
Output is correct |
42 |
Correct |
1 ms |
512 KB |
Output is correct |
43 |
Correct |
1 ms |
512 KB |
Output is correct |
44 |
Correct |
1 ms |
512 KB |
Output is correct |
45 |
Correct |
1 ms |
512 KB |
Output is correct |
46 |
Correct |
1 ms |
512 KB |
Output is correct |
47 |
Correct |
1 ms |
512 KB |
Output is correct |
48 |
Correct |
1 ms |
512 KB |
Output is correct |
49 |
Correct |
1 ms |
512 KB |
Output is correct |
50 |
Correct |
1 ms |
512 KB |
Output is correct |
51 |
Correct |
1 ms |
512 KB |
Output is correct |
52 |
Correct |
1 ms |
512 KB |
Output is correct |
53 |
Correct |
1 ms |
512 KB |
Output is correct |
54 |
Correct |
1 ms |
512 KB |
Output is correct |
55 |
Correct |
20 ms |
9344 KB |
Output is correct |
56 |
Correct |
1 ms |
512 KB |
Output is correct |
57 |
Correct |
13 ms |
12288 KB |
Output is correct |
58 |
Correct |
28 ms |
8448 KB |
Output is correct |
59 |
Correct |
284 ms |
35832 KB |
Output is correct |
60 |
Correct |
279 ms |
35832 KB |
Output is correct |
61 |
Correct |
295 ms |
35832 KB |
Output is correct |
62 |
Correct |
1 ms |
512 KB |
Output is correct |
63 |
Correct |
273 ms |
35336 KB |
Output is correct |
64 |
Correct |
234 ms |
35960 KB |
Output is correct |
65 |
Correct |
233 ms |
35832 KB |
Output is correct |
66 |
Correct |
226 ms |
35836 KB |
Output is correct |
67 |
Correct |
222 ms |
35832 KB |
Output is correct |
68 |
Correct |
221 ms |
35832 KB |
Output is correct |
69 |
Correct |
229 ms |
35832 KB |
Output is correct |
70 |
Correct |
22 ms |
8320 KB |
Output is correct |
71 |
Correct |
21 ms |
8280 KB |
Output is correct |
72 |
Correct |
21 ms |
8320 KB |
Output is correct |
73 |
Correct |
22 ms |
8320 KB |
Output is correct |
74 |
Correct |
21 ms |
8320 KB |
Output is correct |
75 |
Correct |
21 ms |
8320 KB |
Output is correct |
76 |
Correct |
23 ms |
8448 KB |
Output is correct |
77 |
Correct |
21 ms |
8320 KB |
Output is correct |
78 |
Correct |
22 ms |
8320 KB |
Output is correct |
79 |
Correct |
22 ms |
8320 KB |
Output is correct |
80 |
Correct |
21 ms |
8372 KB |
Output is correct |
81 |
Correct |
21 ms |
8320 KB |
Output is correct |
82 |
Correct |
21 ms |
8320 KB |
Output is correct |
83 |
Correct |
22 ms |
8320 KB |
Output is correct |
84 |
Correct |
21 ms |
8320 KB |
Output is correct |
85 |
Correct |
21 ms |
8320 KB |
Output is correct |
86 |
Correct |
21 ms |
8320 KB |
Output is correct |
87 |
Correct |
22 ms |
8320 KB |
Output is correct |
88 |
Correct |
21 ms |
8320 KB |
Output is correct |
89 |
Correct |
21 ms |
8440 KB |
Output is correct |
90 |
Correct |
21 ms |
8320 KB |
Output is correct |