x = importdata('input.txt');
z = zeros(length(x),4); % x,y,vx,vy
for i=1:length(x)
    z(i,:)=sscanf(x{i},'position=< %f,  %f> velocity=<%f, %f>')';
end

N       = 10932; % Increase from 1 by trial and error until text appears!

z(:,1)  = z(:,1)+N*z(:,3);
z(:,2)  = z(:,2)+N*z(:,4);

plot(z(:,1),-z(:,2),'*');
axis(axis+[-10,10,-10,10]) % makes text easiee to read