my $stop = str2time prompt 'Stop time' or die 'Cannot parse time';
$db->contests->create({id => $id, name => $name, owner => $owner, start => $start, stop => $stop});
my $stop = str2time prompt 'Stop time' or die 'Cannot parse time';
$db->contests->create({id => $id, name => $name, owner => $owner, start => $start, stop => $stop});