#include<iostream>
#include<string>
using namespace std;
// N, M <= 3000
int N,M,d[3][3000],a[3000][3000];
bool fv[3000][3000]={},fh[3000][3000]={};
int main(){
cin>>N>>M;
for(int i=0;i<N;++i){
string in;cin>>ws>>in;
for(int j=0;j<M;++j){
if(in[j]=='R')a[i][j]=0;
if(in[j]=='G')a[i][j]=1;
if(in[j]=='W')a[i][j]=2;
}
}
// vertical
for(int i=0;i<N-2;++i){
for(int j=0;j<M;++j){
if(a[i][j]==0&&a[i+1][j]==1&&a[i+2][j]==2)fv[i][j]=1;
}
}
// horizontal
for(int i=0;i<N;++i){
for(int j=0;j<M-2;++j){
if(a[i][j]==0&&a[i][j+1]==1&&a[i][j+2]==2)fh[i][j]=1;
}
}
int ans=0;
for(int i=0;i<N;++i){
int j=i,k=0,m=0;
while(j!=-1&&k!=M){
d[0][m]=d[1][m]=d[2][m]=0;
if(m>0){
if(fh[j][k])d[0][m]=d[0][m-1]+1;
else if(fv[j][k])d[0][m]=d[2][m-1]+1;
d[0][m]=max(d[0][m],d[0][m-1]);
}else{
d[0][m]=fh[j][k]||fv[j][k];
}
if(m>0){
if(fv[j][k])d[1][m]=d[2][m-1]+1;
d[1][m]=max(d[1][m],d[0][m-1]);
}else{
d[1][m]=fv[j][k];
}
if(m>0){
if(fv[j][k])d[2][m]=d[2][m-1]+1;
d[2][m]=max(d[2][m],d[1][m-1]);
}else{
d[2][m]=fv[j][k];
}
--j;++k;++m;
}
ans+=d[0][m-1];
}
// nearly duplicated code
for(int i=1;i<M;++i){
int j=N-1,k=i,m=0;
while(j!=-1&&k!=M){
d[0][m]=d[1][m]=d[2][m]=0;
if(m>0){
if(fh[j][k])d[0][m]=d[0][m-1]+1;
else if(fv[j][k])d[0][m]=d[2][m-1]+1;
d[0][m]=max(d[0][m],d[0][m-1]);
}else{
d[0][m]=fh[j][k]||fv[j][k];
}
if(m>0){
if(fv[j][k])d[1][m]=d[2][m-1]+1;
d[1][m]=max(d[1][m],d[0][m-1]);
}else{
d[1][m]=fv[j][k];
}
if(m>0){
if(fv[j][k])d[2][m]=d[2][m-1]+1;
d[2][m]=max(d[2][m],d[1][m-1]);
}else{
d[2][m]=fv[j][k];
}
--j;++k;++m;
}
ans+=d[0][m-1];
}
cout<<ans<<'\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
368 KB |
Output is correct |
| 2 |
Correct |
2 ms |
504 KB |
Output is correct |
| 3 |
Correct |
2 ms |
616 KB |
Output is correct |
| 4 |
Correct |
2 ms |
616 KB |
Output is correct |
| 5 |
Correct |
2 ms |
704 KB |
Output is correct |
| 6 |
Correct |
2 ms |
704 KB |
Output is correct |
| 7 |
Correct |
2 ms |
704 KB |
Output is correct |
| 8 |
Correct |
2 ms |
704 KB |
Output is correct |
| 9 |
Correct |
2 ms |
740 KB |
Output is correct |
| 10 |
Correct |
2 ms |
744 KB |
Output is correct |
| 11 |
Correct |
2 ms |
752 KB |
Output is correct |
| 12 |
Correct |
2 ms |
776 KB |
Output is correct |
| 13 |
Correct |
2 ms |
780 KB |
Output is correct |
| 14 |
Correct |
2 ms |
784 KB |
Output is correct |
| 15 |
Correct |
2 ms |
788 KB |
Output is correct |
| 16 |
Correct |
2 ms |
792 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
368 KB |
Output is correct |
| 2 |
Correct |
2 ms |
504 KB |
Output is correct |
| 3 |
Correct |
2 ms |
616 KB |
Output is correct |
| 4 |
Correct |
2 ms |
616 KB |
Output is correct |
| 5 |
Correct |
2 ms |
704 KB |
Output is correct |
| 6 |
Correct |
2 ms |
704 KB |
Output is correct |
| 7 |
Correct |
2 ms |
704 KB |
Output is correct |
| 8 |
Correct |
2 ms |
704 KB |
Output is correct |
| 9 |
Correct |
2 ms |
740 KB |
Output is correct |
| 10 |
Correct |
2 ms |
744 KB |
Output is correct |
| 11 |
Correct |
2 ms |
752 KB |
Output is correct |
| 12 |
Correct |
2 ms |
776 KB |
Output is correct |
| 13 |
Correct |
2 ms |
780 KB |
Output is correct |
| 14 |
Correct |
2 ms |
784 KB |
Output is correct |
| 15 |
Correct |
2 ms |
788 KB |
Output is correct |
| 16 |
Correct |
2 ms |
792 KB |
Output is correct |
| 17 |
Correct |
2 ms |
796 KB |
Output is correct |
| 18 |
Correct |
2 ms |
804 KB |
Output is correct |
| 19 |
Correct |
2 ms |
808 KB |
Output is correct |
| 20 |
Correct |
2 ms |
812 KB |
Output is correct |
| 21 |
Correct |
2 ms |
836 KB |
Output is correct |
| 22 |
Correct |
2 ms |
836 KB |
Output is correct |
| 23 |
Correct |
2 ms |
836 KB |
Output is correct |
| 24 |
Correct |
2 ms |
836 KB |
Output is correct |
| 25 |
Correct |
2 ms |
836 KB |
Output is correct |
| 26 |
Correct |
2 ms |
836 KB |
Output is correct |
| 27 |
Correct |
2 ms |
840 KB |
Output is correct |
| 28 |
Correct |
2 ms |
844 KB |
Output is correct |
| 29 |
Correct |
2 ms |
848 KB |
Output is correct |
| 30 |
Correct |
2 ms |
852 KB |
Output is correct |
| 31 |
Correct |
2 ms |
856 KB |
Output is correct |
| 32 |
Correct |
2 ms |
860 KB |
Output is correct |
| 33 |
Correct |
2 ms |
864 KB |
Output is correct |
| 34 |
Correct |
2 ms |
868 KB |
Output is correct |
| 35 |
Correct |
2 ms |
872 KB |
Output is correct |
| 36 |
Correct |
2 ms |
876 KB |
Output is correct |
| 37 |
Correct |
2 ms |
884 KB |
Output is correct |
| 38 |
Correct |
2 ms |
884 KB |
Output is correct |
| 39 |
Correct |
2 ms |
888 KB |
Output is correct |
| 40 |
Correct |
2 ms |
892 KB |
Output is correct |
| 41 |
Correct |
2 ms |
896 KB |
Output is correct |
| 42 |
Correct |
2 ms |
900 KB |
Output is correct |
| 43 |
Correct |
2 ms |
904 KB |
Output is correct |
| 44 |
Correct |
2 ms |
928 KB |
Output is correct |
| 45 |
Correct |
2 ms |
928 KB |
Output is correct |
| 46 |
Correct |
2 ms |
928 KB |
Output is correct |
| 47 |
Correct |
2 ms |
928 KB |
Output is correct |
| 48 |
Correct |
2 ms |
928 KB |
Output is correct |
| 49 |
Correct |
2 ms |
928 KB |
Output is correct |
| 50 |
Correct |
2 ms |
932 KB |
Output is correct |
| 51 |
Correct |
2 ms |
936 KB |
Output is correct |
| 52 |
Correct |
2 ms |
940 KB |
Output is correct |
| 53 |
Correct |
2 ms |
956 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
368 KB |
Output is correct |
| 2 |
Correct |
2 ms |
504 KB |
Output is correct |
| 3 |
Correct |
2 ms |
616 KB |
Output is correct |
| 4 |
Correct |
2 ms |
616 KB |
Output is correct |
| 5 |
Correct |
2 ms |
704 KB |
Output is correct |
| 6 |
Correct |
2 ms |
704 KB |
Output is correct |
| 7 |
Correct |
2 ms |
704 KB |
Output is correct |
| 8 |
Correct |
2 ms |
704 KB |
Output is correct |
| 9 |
Correct |
2 ms |
740 KB |
Output is correct |
| 10 |
Correct |
2 ms |
744 KB |
Output is correct |
| 11 |
Correct |
2 ms |
752 KB |
Output is correct |
| 12 |
Correct |
2 ms |
776 KB |
Output is correct |
| 13 |
Correct |
2 ms |
780 KB |
Output is correct |
| 14 |
Correct |
2 ms |
784 KB |
Output is correct |
| 15 |
Correct |
2 ms |
788 KB |
Output is correct |
| 16 |
Correct |
2 ms |
792 KB |
Output is correct |
| 17 |
Correct |
2 ms |
796 KB |
Output is correct |
| 18 |
Correct |
2 ms |
804 KB |
Output is correct |
| 19 |
Correct |
2 ms |
808 KB |
Output is correct |
| 20 |
Correct |
2 ms |
812 KB |
Output is correct |
| 21 |
Correct |
2 ms |
836 KB |
Output is correct |
| 22 |
Correct |
2 ms |
836 KB |
Output is correct |
| 23 |
Correct |
2 ms |
836 KB |
Output is correct |
| 24 |
Correct |
2 ms |
836 KB |
Output is correct |
| 25 |
Correct |
2 ms |
836 KB |
Output is correct |
| 26 |
Correct |
2 ms |
836 KB |
Output is correct |
| 27 |
Correct |
2 ms |
840 KB |
Output is correct |
| 28 |
Correct |
2 ms |
844 KB |
Output is correct |
| 29 |
Correct |
2 ms |
848 KB |
Output is correct |
| 30 |
Correct |
2 ms |
852 KB |
Output is correct |
| 31 |
Correct |
2 ms |
856 KB |
Output is correct |
| 32 |
Correct |
2 ms |
860 KB |
Output is correct |
| 33 |
Correct |
2 ms |
864 KB |
Output is correct |
| 34 |
Correct |
2 ms |
868 KB |
Output is correct |
| 35 |
Correct |
2 ms |
872 KB |
Output is correct |
| 36 |
Correct |
2 ms |
876 KB |
Output is correct |
| 37 |
Correct |
2 ms |
884 KB |
Output is correct |
| 38 |
Correct |
2 ms |
884 KB |
Output is correct |
| 39 |
Correct |
2 ms |
888 KB |
Output is correct |
| 40 |
Correct |
2 ms |
892 KB |
Output is correct |
| 41 |
Correct |
2 ms |
896 KB |
Output is correct |
| 42 |
Correct |
2 ms |
900 KB |
Output is correct |
| 43 |
Correct |
2 ms |
904 KB |
Output is correct |
| 44 |
Correct |
2 ms |
928 KB |
Output is correct |
| 45 |
Correct |
2 ms |
928 KB |
Output is correct |
| 46 |
Correct |
2 ms |
928 KB |
Output is correct |
| 47 |
Correct |
2 ms |
928 KB |
Output is correct |
| 48 |
Correct |
2 ms |
928 KB |
Output is correct |
| 49 |
Correct |
2 ms |
928 KB |
Output is correct |
| 50 |
Correct |
2 ms |
932 KB |
Output is correct |
| 51 |
Correct |
2 ms |
936 KB |
Output is correct |
| 52 |
Correct |
2 ms |
940 KB |
Output is correct |
| 53 |
Correct |
2 ms |
956 KB |
Output is correct |
| 54 |
Correct |
2 ms |
956 KB |
Output is correct |
| 55 |
Correct |
17 ms |
13472 KB |
Output is correct |
| 56 |
Correct |
3 ms |
13472 KB |
Output is correct |
| 57 |
Correct |
17 ms |
17248 KB |
Output is correct |
| 58 |
Correct |
78 ms |
17248 KB |
Output is correct |
| 59 |
Correct |
671 ms |
63632 KB |
Output is correct |
| 60 |
Correct |
678 ms |
72648 KB |
Output is correct |
| 61 |
Correct |
668 ms |
81444 KB |
Output is correct |
| 62 |
Correct |
3 ms |
81444 KB |
Output is correct |
| 63 |
Correct |
661 ms |
89972 KB |
Output is correct |
| 64 |
Correct |
495 ms |
98660 KB |
Output is correct |
| 65 |
Correct |
476 ms |
107476 KB |
Output is correct |
| 66 |
Correct |
494 ms |
116380 KB |
Output is correct |
| 67 |
Correct |
456 ms |
116380 KB |
Output is correct |
| 68 |
Correct |
454 ms |
123472 KB |
Output is correct |
| 69 |
Correct |
495 ms |
138552 KB |
Output is correct |
| 70 |
Correct |
56 ms |
138552 KB |
Output is correct |
| 71 |
Correct |
59 ms |
138552 KB |
Output is correct |
| 72 |
Correct |
53 ms |
138552 KB |
Output is correct |
| 73 |
Correct |
57 ms |
138552 KB |
Output is correct |
| 74 |
Correct |
52 ms |
138552 KB |
Output is correct |
| 75 |
Correct |
57 ms |
138552 KB |
Output is correct |
| 76 |
Correct |
57 ms |
138552 KB |
Output is correct |
| 77 |
Correct |
55 ms |
138552 KB |
Output is correct |
| 78 |
Correct |
53 ms |
138552 KB |
Output is correct |
| 79 |
Correct |
53 ms |
138552 KB |
Output is correct |
| 80 |
Correct |
55 ms |
138552 KB |
Output is correct |
| 81 |
Correct |
58 ms |
138552 KB |
Output is correct |
| 82 |
Correct |
58 ms |
138552 KB |
Output is correct |
| 83 |
Correct |
56 ms |
138552 KB |
Output is correct |
| 84 |
Correct |
56 ms |
138552 KB |
Output is correct |
| 85 |
Correct |
55 ms |
138552 KB |
Output is correct |
| 86 |
Correct |
58 ms |
138552 KB |
Output is correct |
| 87 |
Correct |
55 ms |
138552 KB |
Output is correct |
| 88 |
Correct |
59 ms |
138552 KB |
Output is correct |
| 89 |
Correct |
61 ms |
138552 KB |
Output is correct |
| 90 |
Correct |
57 ms |
138552 KB |
Output is correct |
