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