lx = 0 rx = 10**5 Y = -1 while True: print(lx, Y) tl = int(input()) print(rx, Y) tr = int(input()) mx = (lx+rx)//2 if tl < tr: rx = mx elif tr < tl: lx = mx else: break ly = 0 ry = 10**5 while True: print(mx-1, ly) tl = int(input()) print(mx-1, ry) tr = int(input()) my = (ly+ry)//2 if tl < tr: ry = my elif tr < tl: ly = my else: break print(mx, my)