Dear Codeforces community,

We are excited to invite you to a TOKI Special Open Contest!
In this contest, You will be given various unusual algorithmic tasks. We tried to make the contest have a similar nature to IPSC.

Key details:

• Unrated
• Contest link: TOKI Special Open Contest: Contest of Salty Tasks
• Time: 1st August 2020, 12.05 UTC
• Writers: afaji321 athin
• Problems: 6, each has an easy and hard version
• Duration: 2 hours

We would like to thank hocky, fushar as organizers, and aguss787, ayaze as testers.

Please register for the contest, and we hope you will enjoy this contest!

UPD Contest is over! Our top 10 (the top 3 are actually tie):

1. Golovanov399
2. nuip
3. Endagorion
4. pwild
5. rfpermen
6. Bedge
7. Itst
8. dorijanlendvaj
9. Pa.Nic
10. Pyqe

And the first solver for each of the hard versions:

• N: Bedge
• O: Bedge
• P: Sadrian
• Q: Bedge
• R: Golovanov399
• S: nuip

Editorial is available here.

You can upsolve the problems here.

Thank you for participating and see you in the next TOKI contest!