import sys

l = sys.stdin.readline().strip().split(" ")
n, k = int(l[0]), int(l[1])

min, max = 1, n
while True:
    mid = (min + max) / 2
    sys.stdout.write("query %d\n" % mid)
    sys.stdout.flush()
    resp = sys.stdin.readline().strip()
    if resp == "broke":
        max = mid - 1
    elif resp == "error":
        break
    else:
        min = mid + 1
    if max < min:
        sys.stdout.write("answer %d\n" % mid)
        sys.stdout.flush()
        resp = sys.stdin.readline()  # exit
        break
sys.exit(0)