for(i = 1; i<=n; i++)
      for(j = 1; j<n; j++)
      {
            if(array2[j] != 2)
            pushStack(s, array1[i]);
            if(j == n-1 && array2[j] != 2)
            {
                  pushStack(s, array1[i]);
                  pushStack(s, array1[i+1]);
            }
            if(array2[j] == 2)
            {
                  cho = array1[i]*array1[i+1];
                  if(array2[j+1] == 2)
                  {
                        cho = cho*array1[i+2];
                        pushStack(s, cho);
                  }
                  if(array2[j+1] != 2)
                  pushStack(s, cho);
            }
      }