Example of Input file for Two Dimensions LJ Model

3  0.001  0.20  20.0
0.50  0.29
-1.00  0.00
-0.50  0.29
1.00  0.00
0.00  -0.58
0.00  0.00
In which the first line is #of atoms, integration timestep, printout timestep and simulation duration and the second and third lines are the x-position, y-position and x-velocity, y-velocity respectively for atom 1. Lines four and five are for atom 2 and so on.