I have put a new snapshot. From the ChangeLog:
- Added the constraints teacher(s)/students (set) max activity tags from a set per day/real day (suggested by Thai Chi Phuong and Vũ Ngọc Thành). This constraint accepts as a maximum number of tags 1 or 2, and incorporates the old-style constrains teacher(s)/students (set) max two activity tags per day/real day from N1, N2, N3.
- Added the constraints teacher(s) no two consecutive days (suggested by Khelifi Fouad Mohssen).
The new constraint referring to maximum tags per day might be a constraint useful for more purposes.
The link, as usual: https://lalescu.ro/liviu/fet/download/test/
I just added a new snapshot, some nonessential bugs fixed (if the old file had constraints N1, N2, N3 and there were not such activity tags, FET crashed when generating. Now it reports the error).
Same download link.
I hope the new constraint, suggested by Thai Chi Phuong and Vũ Ngọc Thành, max 1/2 activity tags per day/real day for teacher(s)/students (set) will be important for many other uses. I am happy with it.
I added a new snapshot, with critical possible crash bugs fixed. Same link.
I am also thinking of speed improvements, I may put a new snapshot soon.
Yes, I made some improvements and just put a new snapshot. Please test a bit the new constraints, again.