hash the printed (a,b) pairs, do not count twice when we redo a q.
hash the printed (a,b) pairs, do not count twice when we redo a q.

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs