def main():
    xmin = 0
    xmax = 100000

    print(50001, 0)
    y = int(input())
    while True:
        x = xmin + (xmax - xmin) // 2
        print(x, 0)
        ret = int(input())

        if y < ret:
            xmin = x
        else:
            xmax = x
        y = min(y, ret)

        if xmax - xmin <= 1:
            print(xmin, 0)
            ret1 = int(input())
            print(xmax, 0)
            ret2 = int(input())
            if ret1 < ret2:
                x = xmin
                y = ret1
            else:
                x = xmax
                y = ret2
            break

    print(x, y)

main()