import sys

def fprint(s):
    print "%s %s" % (s[0], s[1])
    sys.stdout.flush()

def search(position):
    fprint(position)
    alt = int(raw_input())
    if alt == 0:
        sys.exit(0)

    if alt < 0:
        search([position[0] + 1, position[1]])
        search([position[0], position[1] + 1])

search([0, 0])