Painter

2
4
RR.B
.RG.
.BRR
B..R
4
RRBB
RGGB
BGGR
BBRR

3
6

暴力把2个方向判一遍

#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<algorithm>
#include<functional>
#include<iostream>
#include<cmath>
#include<cctype>
#include<ctime>
using namespace std;
#define For(i,n) for(int i=1;i<=n;i++)
#define Fork(i,k,n) for(int i=k;i<=n;i++)
#define Rep(i,n) for(int i=0;i<n;i++)
#define ForD(i,n) for(int i=n;i;i--)
#define RepD(i,n) for(int i=n;i>=0;i--)
#define Forp(x) for(int p=pre[x];p;p=next[p])
#define Forpiter(x) for(int &p=iter[x];p;p=next[p])  
#define Lson (x<<1)
#define Rson ((x<<1)+1)
#define MEM(a) memset(a,0,sizeof(a));
#define MEMI(a) memset(a,127,sizeof(a));
#define MEMi(a) memset(a,128,sizeof(a));
#define INF (2139062143)
#define F (100000007)
#define MAXN (50+10)
typedef long long ll;
ll mul(ll a,ll b){return (a*b)%F;}
ll add(ll a,ll b){return (a+b)%F;}
ll sub(ll a,ll b){return (a-b+llabs(a-b)/F*F+F)%F;}
void upd(ll &a,ll b){a=(a%F+b%F)%F;}
int n,m;
char s[MAXN][MAXN]; 
int main()
{
//	freopen("D.in","r",stdin);
	
	int T;cin>>T;
	while(T--)
	{
		int n;
		scanf("%d\n",&n);
		For(i,n) scanf("%s",s[i]+1);
		m=strlen(s[1]+1);
		int ans=0;
		Fork(k,2,n+m)
		{
			bool flag=0; 
			For(i,n)
			{
				int j=k-i;
				if (j<1||j>m) continue;
				
				if (s[i][j]=='B'||s[i][j]=='G') {
					if (!flag) flag=1,ans++; 
				}
				else flag=0;
			}
		}
		
		For(i,n) For(j,m/2) swap(s[i][j],s[i][m-j+1]);
		
		Fork(k,2,n+m)
		{
			bool flag=0; 
			For(i,n)
			{
				int j=k-i;
				if (j<1||j>m) continue;
				
				if (s[i][j]=='R'||s[i][j]=='G') {
					if (!flag) flag=1,ans++; 
				}
				else flag=0;
			}
		}
		
		
		
		cout<<ans<<endl;
	}
	
	return 0;
}