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123456#include<iostream>
using namespace std;
int b[101][101]={0};
char a[101][101];
int num[8][2]={{-1,-1},{-1,0},{-1,1},{0,-1},{0,1},{1,-1},{1,0},{1,1}};
int m,n;
void make(int t,int s)
{
int i;
int j,k;
b[t][s]=1;
for(i=0;i<8;i++)
{
j=t+num[i][0];
k=s+num[i][1];
if((a[j][k]=='W')&&(b[j][k]==0)&&(j>=0)
&&(j<m)&&(k>=0)&&(k<n))
make(j,k);
}
}
int main()
{
int i,j;
cin>>m>>n;
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
cin>>a[i][j];
}
int c=0;
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
{
if(a[i][j]=='W'&&b[i][j]==0)
{
c++;
make(i,j);
}
}
}
cout<<c<<endl;
return 0;
}
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