C       Nc - number of centers
C       Nrad - number of shells for halos
C
      PARAMETER (Ncmax  =80000)            ! Max number of initial centers
      PARAMETER (Nrad=65)              ! Number of shells around a halo
      COMMON /MXM/ Nh,Xm(Ncmax),Ym(Ncmax),Zm(Ncmax),
     &                                Vx(Ncmax),Vy(Ncmax),Vz(Ncmax),
     &                                Amc(Ncmax),Rmc(Ncmax),Vrm(Ncmax)