5 ms·
Djikstra's reply is pretty cool: http://www.cs.utexas.edu/users/EWD/ewd06xx/EWD666.PDF http://www.cs.utexas.edu/users/EWD/ewd06xx/EWD666.PDF
by jrp 18y ago
Djikstra's reply is pretty cool:
http://www.cs.utexas.edu/users/EWD/ewd06xx/EWD666.PDF http://www.cs.utexas.edu/users/EWD/ewd06xx/EWD666.PDF
- rjprins 18y agoI just solved it in 1,5 hour without using pen and paper at all! But then, I didn't prove it was unique and was kind of lucky the solution was small...