{
    for(j=0;j<M;j++)
    {
        counter1=0;
        counter2=0;
        for (i=0;i<N;i++)
        {
            if(B[i][j]<5)
                counter1++;
            else
                counter2++;
        }
        printf("Pososto epituxias sto mathima %d einai %f %%\n",j+1,((float)(counter2*100)/N));
        printf("Pososto apotuxias sto mathima %d einai %f %%\n",j+1,((float)(counter1*100)/N));
    }
          }