def main():
    xmin = 0
    xmax = 100000

    print(xmax // 2 + 1, 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 ret == 0 or xmin == xmax:
            break

    print(x, y)

main()