param x_max;
param y_max;
param randseed;
param step;
param walk;
param PI = 4*atan(1);
param r_norm = sqrt(x_max*y_max/N/PI);
param r_coef;
param r = r_coef*r_norm;


param x{1..T,NODES};
param y{1..T,NODES};


data;

param x_max = 250;
param y_max = 250;

param randseed = 1050;
param r_coef = 3.1;
param N = 9;
param T = 300;
param step = 1.1;
param walk = 15;

model;