vbgrass c++

#include<bits/stdc++.h>
using namespace std;
char a[1000][1000];
int r,c;
void nhap()
{
    cin>>r>>c;
    for(int i=1;i<=r;i++)
    {
        for(int j=1;j<=c;j++) 
            cin>>a[i][j];
    }
}
void giai()
{
    int d=0;
    for(int i=1;i<=r;i++)
       for(int j=1;j<=c;j++)
          if(a[i-1][j]!='#'&&a[i][j+1]!='#'&&a[i][j]=='#') d++;
    cout<<d;
}
int main()
{
   // freopen("vbgrass.inp","r",stdin);
   // freopen("vbgrass.out","w",stdout);
    nhap();
    giai(); 
}