from turtle import *


vy = int(input())
vx = int(input())
waga = int(input())
opur=waga/10
while ycor() >= 0:
    vy -= waga - opur
    if vx - opur >= 0:
        vx -= opur
    else:
        vx = 0
    goto(vx + xcor(), vy + ycor())
    print(vx, vy)

mainloop()