#box size X in lB 
BOXX 25

#box size Y in lB
BOXY 25

#box size Z in lB
BOXZ 25

#Number of polymers or macroions (immobile)
 NPolymers 1

#Number of beads in each immobile polymer or macroion
 Ns 1

# polymer or macroion bead diameter (immobile)
 beaddiameter 10

# polymer or macroion bead separation
 polymerbeadseparation 0.25

#Polymer or macroion bead charge in e
 qpolymer 120

#Number of anions (mobile)
 Nanion 120

# ion diameter (mobile)
iondiameter 0.5

#anion charge in e
 qanion -1.0

#Number of mobile cations
 Ncation 0

#cation charge
 qcation 1.0


#Height from surface in lB for immobile molecule 1
z1 12.5

#Height from surface in lB for immobile molecule 2
z2 12.5

#Interpolymer or macroion distance in lB
r 0.0

#Initial maximum MC step size in lB (max box size)
maxstep 25

# MC step update interval in MC steps
stepupdateinterval 10000

# energy and force printout interval in MC steps
printoutinterval 10

# gro-file printout interval in MC steps
groprintoutinterval 500

# Initial steps to be disregarded in MC steps
RELAXATIONSTEPS 0

# Ewald alpha parameter (do not change)
Ealpha 0.4

# Ewald real space cut-off Rcut (do not change unless smaller box)
Rcut 7.5

# Ewald reciprocal space cut-off (do not change)
EwaldK 8

#surface charge (if the system has a substrate)
 sigma 0

#delta epsilon (substrate image charge screening factor)// (es-e0)/(es+e0)
IMCHRGSCR 0