#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define X first
#define Y second
int n,m,dp[3005][3],cnt=0,val;
char s[3005][3005];
vector<pair<int,int> > v;
int main()
{
scanf("%d%d",&n,&m);
for(int i=1;i<=n;i++)
{
scanf("%s",s[i]+1);
}
for(int i=n;i>=1;i--)
{
v.pb({i,1});
}
for(int j=2;j<=m;j++)
{
v.pb({n,j});
}
for(int i=0;i<v.size();i++)
{
memset(dp,0,sizeof dp);
//printf("section %d:%d %d\n",i,v[i].X,v[i].Y);
for(int x=v[i].X,y=v[i].Y;x>=1&&y<=m;x--,y++)
{
//printf("%d %d\n",x,y);
dp[y][0]=max(dp[y][0],dp[y-1][0]);
if(y>=3)
{
if(s[x][y]=='W'&&s[x][y-1]=='G'&&s[x][y-2]=='R')
{
dp[y][1]=max(dp[y-1][1],dp[y-3][2])+1;
////dp[y][1]=max(dp[y][1],dp[y-1][0]+1);
}
}
if(x>=3)
{
if(s[x][y]=='W'&&s[x-1][y]=='G'&&s[x-2][y]=='R')
{
dp[y][2]=max(dp[y-1][2],dp[y-1][1])+1;
dp[y][2]=max(dp[y][2],dp[y-1][0]+1);
}
}
dp[y][0]=max(dp[y][0],dp[y][1]);
dp[y][0]=max(dp[y][0],dp[y][2]);
val=dp[y][0];
//printf("%d %d\n",y,dp[y][0]);
}
cnt+=val;
}
printf("%d\n",cnt);
}
Compilation message
dango_maker.cpp: In function 'int main()':
dango_maker.cpp:24:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
24 | for(int i=0;i<v.size();i++)
| ~^~~~~~~~~
dango_maker.cpp:11:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
11 | scanf("%d%d",&n,&m);
| ~~~~~^~~~~~~~~~~~~~
dango_maker.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
14 | scanf("%s",s[i]+1);
| ~~~~~^~~~~~~~~~~~~
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
308 KB |
Output is correct |
2 |
Correct |
1 ms |
312 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
308 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
316 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
308 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
304 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
308 KB |
Output is correct |
2 |
Correct |
1 ms |
312 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
308 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
316 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
308 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
304 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
20 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
308 KB |
Output is correct |
2 |
Correct |
1 ms |
312 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
1 ms |
308 KB |
Output is correct |
5 |
Correct |
0 ms |
340 KB |
Output is correct |
6 |
Correct |
0 ms |
340 KB |
Output is correct |
7 |
Correct |
0 ms |
316 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
340 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
0 ms |
308 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
1 ms |
304 KB |
Output is correct |
16 |
Correct |
1 ms |
340 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
1 ms |
340 KB |
Output is correct |
19 |
Incorrect |
1 ms |
340 KB |
Output isn't correct |
20 |
Halted |
0 ms |
0 KB |
- |