#include<iostream>
#include <fstream>

using namespace std;
#define DimMax 50

int Dx[4]={-1, 0, 1, 0}, Dy[4]={ 0, 1, 0,-1};

int a[DimMax][DimMax], m, n, NrObiecte;

void Citire()
{
ifstream fin("foto.in");
fin>>n>>m;
for (int i=1; i<=n; i++)
    for (int j=1; j<=m; j++)
        fin>>a[i][j];
fin.close();
}
void bordare()
{ int i, j;
for(i=0; i<=n+1; i++) a[i][0]=a[i][m+1]=0;
for(j=0; j<=m+1; j++) a[0][j]=a[n+1][j]=0;
}

void Sterge_Obiect(int x , int y)
{ if (a[x][y])
{ a[x][y]=0;         //sterg acest element de imagine
//cautarea continua in cele 4 directii posibile
for (int dir=0; dir<4; dir++)
Sterge_Obiect(x+Dx[dir], y+Dy[dir]);}
}

int main()
{
Citire();
bordare();
for (int i=1; i<=n; i++)
    for (int j=1; j<=m; j++)
        if (a[i][j])             //am depistat un obiect
        {
            NrObiecte++;
            Sterge_Obiect(i,j);
        }
cout<<"Nr. obiecte = "<<NrObiecte<<endl;
return 0;
}