#include<cstdio>
#include<cstring>
#include<cmath>
#include<cstdlib>
#include<cstdio>
#include<ctime>
#include<cctype>
#include<cassert>
#include<climits>
#include<cerrno>
#include<cfloat>
#include<ciso646>
#include<clocale>
#include<csetjmp>
#include<csignal>
#include<cstdarg>
#include<cstddef>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<ctime>
#include<cwchar>
#include<cwctype>
//containers
#include<vector>
#include<list>
#include<map>
#include<queue>
#include<deque>
#include<set>
#include<complex>
#include<string>
#include<stack>
#include<bitset>
#include<istream>
#include<valarray>
//IOs
#include<iostream>
#include<sstream>
#include<iomanip>
#include<fstream>
#include<exception>
#include<ios>
#include<iosfwd>
#include<ostream>
#include<iterator>
#include<stdexcept>
#include<streambuf>
//algorithm & miscellaneous
#include<algorithm>
#include<functional>
#include<numeric>
#include<utility>
#include<limits>
#include<locale>
#include<memory>
#include<new>
#define pb push_back
using namespace std;
int prime[500];
int r,c;
int noofPrimes[500];
void sieve()
{
memset(prime,1,sizeof(prime));
memset(noofPrimes,0,sizeof(noofPrimes));
prime[0]=prime[1]=0;
int count=0;
for(int i=2;i<=500;i++)
{
if(prime[i])
{
count++;
for(int j=2*i;j<500;j+=i)
prime[j]=0;
}
noofPrimes[i]=count;
}
}
int main()
{
////////////////////////////////////////////////////
sieve();
int t;
scanf("%d",&t);
while(t--)
{
int r,c;
scanf("%d",&r);
scanf("%d",&c);
vector<string>a;
for(int i=0;i<r;i++)
{
string st;
cin>>st;
a.pb(st);
}
int l[r][c],rt[r][c],u[r][c],d[r][c];
memset(l,0,sizeof(l));
memset(rt,0,sizeof(rt));
memset(u,0,sizeof(u));
memset(d,0,sizeof(d));
for(int i=1;i<r;i++)
{
for(int j=1;j<c;j++)
{
if(a[i][j]=='#')
{
l[i][j]=0;
u[i][j]=0;
}
else
{
if(a[i][j-1]=='^')
l[i][j]=l[i][j-1]+1;
else
l[i][j]=0;
if(a[i-1][j]=='^')
u[i][j]=u[i-1][j]+1;
else
u[i][j]=0;
}
}
}
for(int i=r-2;i>=0;i--)
{
for(int j=c-2;j>=0;j--)
{
if(a[i][j]=='#')
{
rt[i][j]=0;
d[i][j]=0;
}
else
{
if(a[i][j+1]=='^')
rt[i][j]=rt[i][j+1]+1;
else
rt[i][j]=0;
if(a[i+1][j]=='^')
d[i][j]=d[i+1][j];
else
d[i][j]=0;
}
}
}
int ans=0;
for(int i=0;i<r;i++)
{
for(int j=0;j<c;j++)
{
if(a[i][j]=='^')
{
int mini=min(l[i][j],rt[i][j]);
mini=min(mini,d[i][j]);
mini=min(mini,u[i][j]);
if(mini>=2)
{
ans+=noofPrimes[mini];
//cout<<"mini"<<i<<","<<j<<mini<<"\n";
}
}
}
}
cout<<ans<<"\n";
}
////////////////////////////////////////////////////
return 0;
}
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