#include <bits/stdc++.h>
using namespace std;
#define int long long
#define sp << ' ' <<
#define nl << '\n'
const int MAXN = 3e3;
int n, m, dp[3][3];
string g[MAXN+1];
bool up(int i, int j){
return i > 2 && g[i-2][j] == 'R' && g[i-1][j] == 'G' && g[i][j] == 'W';
}
bool left(int i, int j){
return j > 2 && g[i][j-2] == 'R' && g[i][j-1] == 'G' && g[i][j] == 'W';
}
signed main(){
cin.tie(0)->sync_with_stdio(0);
cin >> n >> m;
for(int i=1; i<=n; ++i) cin >> g[i], g[i] = ' ' + g[i];
for(int s=2; s<=n+m; ++s){
int i = max(1LL, s - m);
for(; i<=n && s-i; ++i){
int j = s - i, cur[3][3];
for(int a=0; a<3; ++a)
cur[a][0] = cur[a][1] = cur[a][2] = 0;
for(int a=0; a<3; ++a){
for(int b=0; b<3; ++b){
for(int c=0; c<3; ++c){
if(a == 1 && max(b, c) > a) continue;
if(a == 1 && !up(i, j)) continue;
if(a == 2 && !left(i, j)) continue;
cur[a][b] = max(cur[a][b], bool(a) + dp[b][c]);
}
}
}
swap(dp, cur);
}
for(int a=0; a<3; ++a)
for(int b=0; b<3; ++b)
dp[0][0] = max(dp[0][0], dp[a][b]);
for(int a=0; a<3; ++a)
for(int b=0; b<3; ++b)
dp[a][b] = dp[0][0];
}
cout << dp[0][0];
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 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 |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
0 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
436 KB |
Output is correct |
| 11 |
Correct |
0 ms |
332 KB |
Output is correct |
| 12 |
Correct |
0 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
0 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
0 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 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 |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
0 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
436 KB |
Output is correct |
| 11 |
Correct |
0 ms |
332 KB |
Output is correct |
| 12 |
Correct |
0 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
0 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
0 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 |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
0 ms |
332 KB |
Output is correct |
| 22 |
Correct |
1 ms |
332 KB |
Output is correct |
| 23 |
Correct |
1 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
408 KB |
Output is correct |
| 26 |
Correct |
1 ms |
332 KB |
Output is correct |
| 27 |
Correct |
1 ms |
332 KB |
Output is correct |
| 28 |
Correct |
1 ms |
332 KB |
Output is correct |
| 29 |
Correct |
1 ms |
332 KB |
Output is correct |
| 30 |
Correct |
1 ms |
332 KB |
Output is correct |
| 31 |
Correct |
1 ms |
332 KB |
Output is correct |
| 32 |
Correct |
0 ms |
332 KB |
Output is correct |
| 33 |
Correct |
1 ms |
332 KB |
Output is correct |
| 34 |
Correct |
1 ms |
332 KB |
Output is correct |
| 35 |
Correct |
1 ms |
332 KB |
Output is correct |
| 36 |
Correct |
1 ms |
332 KB |
Output is correct |
| 37 |
Correct |
1 ms |
332 KB |
Output is correct |
| 38 |
Correct |
1 ms |
332 KB |
Output is correct |
| 39 |
Correct |
1 ms |
332 KB |
Output is correct |
| 40 |
Correct |
1 ms |
332 KB |
Output is correct |
| 41 |
Correct |
1 ms |
404 KB |
Output is correct |
| 42 |
Correct |
1 ms |
332 KB |
Output is correct |
| 43 |
Correct |
1 ms |
332 KB |
Output is correct |
| 44 |
Correct |
1 ms |
332 KB |
Output is correct |
| 45 |
Correct |
1 ms |
332 KB |
Output is correct |
| 46 |
Correct |
1 ms |
332 KB |
Output is correct |
| 47 |
Correct |
1 ms |
332 KB |
Output is correct |
| 48 |
Correct |
1 ms |
332 KB |
Output is correct |
| 49 |
Correct |
1 ms |
332 KB |
Output is correct |
| 50 |
Correct |
1 ms |
332 KB |
Output is correct |
| 51 |
Correct |
0 ms |
332 KB |
Output is correct |
| 52 |
Correct |
1 ms |
332 KB |
Output is correct |
| 53 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
332 KB |
Output is correct |
| 2 |
Correct |
1 ms |
332 KB |
Output is correct |
| 3 |
Correct |
0 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 |
0 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
332 KB |
Output is correct |
| 8 |
Correct |
1 ms |
332 KB |
Output is correct |
| 9 |
Correct |
0 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
436 KB |
Output is correct |
| 11 |
Correct |
0 ms |
332 KB |
Output is correct |
| 12 |
Correct |
0 ms |
332 KB |
Output is correct |
| 13 |
Correct |
0 ms |
332 KB |
Output is correct |
| 14 |
Correct |
0 ms |
332 KB |
Output is correct |
| 15 |
Correct |
0 ms |
332 KB |
Output is correct |
| 16 |
Correct |
0 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 |
332 KB |
Output is correct |
| 20 |
Correct |
1 ms |
332 KB |
Output is correct |
| 21 |
Correct |
0 ms |
332 KB |
Output is correct |
| 22 |
Correct |
1 ms |
332 KB |
Output is correct |
| 23 |
Correct |
1 ms |
332 KB |
Output is correct |
| 24 |
Correct |
1 ms |
332 KB |
Output is correct |
| 25 |
Correct |
1 ms |
408 KB |
Output is correct |
| 26 |
Correct |
1 ms |
332 KB |
Output is correct |
| 27 |
Correct |
1 ms |
332 KB |
Output is correct |
| 28 |
Correct |
1 ms |
332 KB |
Output is correct |
| 29 |
Correct |
1 ms |
332 KB |
Output is correct |
| 30 |
Correct |
1 ms |
332 KB |
Output is correct |
| 31 |
Correct |
1 ms |
332 KB |
Output is correct |
| 32 |
Correct |
0 ms |
332 KB |
Output is correct |
| 33 |
Correct |
1 ms |
332 KB |
Output is correct |
| 34 |
Correct |
1 ms |
332 KB |
Output is correct |
| 35 |
Correct |
1 ms |
332 KB |
Output is correct |
| 36 |
Correct |
1 ms |
332 KB |
Output is correct |
| 37 |
Correct |
1 ms |
332 KB |
Output is correct |
| 38 |
Correct |
1 ms |
332 KB |
Output is correct |
| 39 |
Correct |
1 ms |
332 KB |
Output is correct |
| 40 |
Correct |
1 ms |
332 KB |
Output is correct |
| 41 |
Correct |
1 ms |
404 KB |
Output is correct |
| 42 |
Correct |
1 ms |
332 KB |
Output is correct |
| 43 |
Correct |
1 ms |
332 KB |
Output is correct |
| 44 |
Correct |
1 ms |
332 KB |
Output is correct |
| 45 |
Correct |
1 ms |
332 KB |
Output is correct |
| 46 |
Correct |
1 ms |
332 KB |
Output is correct |
| 47 |
Correct |
1 ms |
332 KB |
Output is correct |
| 48 |
Correct |
1 ms |
332 KB |
Output is correct |
| 49 |
Correct |
1 ms |
332 KB |
Output is correct |
| 50 |
Correct |
1 ms |
332 KB |
Output is correct |
| 51 |
Correct |
0 ms |
332 KB |
Output is correct |
| 52 |
Correct |
1 ms |
332 KB |
Output is correct |
| 53 |
Correct |
1 ms |
332 KB |
Output is correct |
| 54 |
Correct |
1 ms |
332 KB |
Output is correct |
| 55 |
Correct |
2 ms |
332 KB |
Output is correct |
| 56 |
Correct |
2 ms |
332 KB |
Output is correct |
| 57 |
Correct |
2 ms |
332 KB |
Output is correct |
| 58 |
Correct |
93 ms |
2408 KB |
Output is correct |
| 59 |
Correct |
923 ms |
11484 KB |
Output is correct |
| 60 |
Correct |
903 ms |
11488 KB |
Output is correct |
| 61 |
Correct |
896 ms |
11488 KB |
Output is correct |
| 62 |
Correct |
2 ms |
332 KB |
Output is correct |
| 63 |
Correct |
843 ms |
11160 KB |
Output is correct |
| 64 |
Correct |
774 ms |
11480 KB |
Output is correct |
| 65 |
Correct |
775 ms |
11480 KB |
Output is correct |
| 66 |
Correct |
784 ms |
11480 KB |
Output is correct |
| 67 |
Correct |
832 ms |
11484 KB |
Output is correct |
| 68 |
Correct |
841 ms |
11588 KB |
Output is correct |
| 69 |
Correct |
852 ms |
11488 KB |
Output is correct |
| 70 |
Correct |
78 ms |
2380 KB |
Output is correct |
| 71 |
Correct |
79 ms |
2380 KB |
Output is correct |
| 72 |
Correct |
79 ms |
2420 KB |
Output is correct |
| 73 |
Correct |
79 ms |
2380 KB |
Output is correct |
| 74 |
Correct |
80 ms |
2380 KB |
Output is correct |
| 75 |
Correct |
79 ms |
2380 KB |
Output is correct |
| 76 |
Correct |
79 ms |
2380 KB |
Output is correct |
| 77 |
Correct |
79 ms |
2380 KB |
Output is correct |
| 78 |
Correct |
82 ms |
2380 KB |
Output is correct |
| 79 |
Correct |
79 ms |
2380 KB |
Output is correct |
| 80 |
Correct |
79 ms |
2404 KB |
Output is correct |
| 81 |
Correct |
80 ms |
2380 KB |
Output is correct |
| 82 |
Correct |
80 ms |
2380 KB |
Output is correct |
| 83 |
Correct |
79 ms |
2340 KB |
Output is correct |
| 84 |
Correct |
77 ms |
2340 KB |
Output is correct |
| 85 |
Correct |
82 ms |
2380 KB |
Output is correct |
| 86 |
Correct |
78 ms |
2380 KB |
Output is correct |
| 87 |
Correct |
79 ms |
2400 KB |
Output is correct |
| 88 |
Correct |
82 ms |
2336 KB |
Output is correct |
| 89 |
Correct |
78 ms |
2400 KB |
Output is correct |
| 90 |
Correct |
78 ms |
2380 KB |
Output is correct |
