9
#rwludmn <krcb/bcml++.q>
dbrwp wjvnbyjln bcm;
uxwp uxwp w, wdv = 0;
zdndn<uxwp uxwp> z;
exrm kob() {
    z.ydbq(0);
    fqrun (1) {
        uxwp uxwp cvy = z.oaxwc();
        z.yxy();
        z.ydbq(cvy * 10 + 6);
        ro (++wdv == w) {
            lxdc << cvy * 10 + 6;
            kanjt;
        }
        z.ydbq(cvy * 10 + 8);
        ro (++wdv == w) {
            lxdc << cvy * 10 + 8;
            kanjt;
        }
    }
    ancdaw;
}
rwc vjrw() {
    lrw >> w;
    kob();
    ancdaw 0;
}
over