d = map(int, input("50000 50000\n"))
up = int(input("50000 40000\n"))
down = int(input("50000 60000\n"))
left = int(input("40000 50000\n"))
right = int(input("60000 50000\n"))
if d+10000==up:
    y_sign = 1
else:
    y_sign = -1
if d+10000==left:
    x_sign = 1
else:
    x_sign = -1

x, y = (50000, 50000)

while True:
    mx = int(input("%d %d\n"%(x+(d*x_sign),y)))
    my = int(input("%d %d\n"%(x, y+(d*y_sign))))
    if mx==my:
        x_sign*=-1
        y_sign*=-1
    elif mx<my:
        y_sign*=-1
    else:
        x_sign*=-1
    d = min(mx,my)//2