#include <bits/stdc++.h>
using namespace std;
#define int long long
int n, m, dp[3001][3001]={};
string g[3000];
bool valid(int i, int j, bool vertical){
--i; --j;
if(i<0 || j<0) return false;
if(vertical){
if(i<2) return false;
if(g[i-2][j]=='R' && g[i-1][j]=='G' && g[i][j]=='W') return true;
if(g[i-2][j]=='W' && g[i-1][j]=='G' && g[i][j]=='R') return true;
}
else{
if(j<2) return false;
if(g[i][j-2]=='R' && g[i][j-1]=='G' && g[i][j]=='W') return true;
if(g[i][j-2]=='W' && g[i][j-1]=='G' && g[i][j]=='R') return true;
}
return false;
}
signed main(){
ios_base::sync_with_stdio(false); cin.tie(nullptr);
cin >> n >> m;
for(int i=0; i<n; ++i) cin >> g[i];
for(int i=1; i<=n; ++i){
for(int j=1; j<=m; ++j){
dp[i][j] = max(dp[i-1][j], dp[i][j-1]);
int sub = (valid(i-2, j, false) && valid(i, j-2, true));
dp[i][j] = max(dp[i][j], dp[i-1][j]+dp[i][j-1]-dp[i-1][j-1]-sub);
if(valid(i, j, true)){
sub = (valid(i-1, j-2, true) && valid(i-3, j, false));
sub += (valid(i-2, j-2, true) && valid(i-4, j, false));
dp[i][j] = max(dp[i][j], dp[i-3][j]+dp[i][j-1]-dp[i-3][j-1]+1-sub);
}
if(valid(i, j, false)){
sub = (valid(i-2, j-1, false) && valid(i, j-3, true));
sub += (valid(i-2, j-2, false) && valid(i, j-4, true));
dp[i][j] = max(dp[i][j], dp[i][j-3]+dp[i-1][j]-dp[i-1][j-3]+1-sub);
}
}
}
cout << dp[n][m];
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
492 KB |
Output is correct |
2 |
Correct |
1 ms |
492 KB |
Output is correct |
3 |
Correct |
1 ms |
492 KB |
Output is correct |
4 |
Correct |
1 ms |
492 KB |
Output is correct |
5 |
Correct |
1 ms |
512 KB |
Output is correct |
6 |
Correct |
1 ms |
492 KB |
Output is correct |
7 |
Correct |
1 ms |
512 KB |
Output is correct |
8 |
Correct |
1 ms |
492 KB |
Output is correct |
9 |
Correct |
1 ms |
492 KB |
Output is correct |
10 |
Correct |
1 ms |
640 KB |
Output is correct |
11 |
Correct |
1 ms |
492 KB |
Output is correct |
12 |
Correct |
1 ms |
492 KB |
Output is correct |
13 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
492 KB |
Output is correct |
2 |
Correct |
1 ms |
492 KB |
Output is correct |
3 |
Correct |
1 ms |
492 KB |
Output is correct |
4 |
Correct |
1 ms |
492 KB |
Output is correct |
5 |
Correct |
1 ms |
512 KB |
Output is correct |
6 |
Correct |
1 ms |
492 KB |
Output is correct |
7 |
Correct |
1 ms |
512 KB |
Output is correct |
8 |
Correct |
1 ms |
492 KB |
Output is correct |
9 |
Correct |
1 ms |
492 KB |
Output is correct |
10 |
Correct |
1 ms |
640 KB |
Output is correct |
11 |
Correct |
1 ms |
492 KB |
Output is correct |
12 |
Correct |
1 ms |
492 KB |
Output is correct |
13 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
492 KB |
Output is correct |
2 |
Correct |
1 ms |
492 KB |
Output is correct |
3 |
Correct |
1 ms |
492 KB |
Output is correct |
4 |
Correct |
1 ms |
492 KB |
Output is correct |
5 |
Correct |
1 ms |
512 KB |
Output is correct |
6 |
Correct |
1 ms |
492 KB |
Output is correct |
7 |
Correct |
1 ms |
512 KB |
Output is correct |
8 |
Correct |
1 ms |
492 KB |
Output is correct |
9 |
Correct |
1 ms |
492 KB |
Output is correct |
10 |
Correct |
1 ms |
640 KB |
Output is correct |
11 |
Correct |
1 ms |
492 KB |
Output is correct |
12 |
Correct |
1 ms |
492 KB |
Output is correct |
13 |
Incorrect |
1 ms |
492 KB |
Output isn't correct |
14 |
Halted |
0 ms |
0 KB |
- |