Hello ladies and gentlemen.

I'm honored to announce you that Codeforces Round #366(or should I say, IOI 2016 opening CF contest) is gonna take place on August 7th and I'm the writer. Please note that the timing is unusual.

As usual, there are 5 problems in each division and duration is 2 hours.

I want to thank LiTi for testing this round, GlebsHP for helping me prepare it and MikeMirzayanov for legendary and unique platforms of Polygon and CF.

The main characters of this round are The Avengers!

I wish you all Accepted solutions and Successful hacks.

Scoring will be posted soon.

Problems are sorted by their expected difficulty, but I strictly recommend you to read all the problems.

GL & HF!

P.S: Top IOI participant in each division (only with handle present in this list) will be rewarded with Persian souvenirs in Kazan.

UPD: Totally unrelated, but since the previous IOI group in telegram no longer exists, here's a new group!

UPD: Scoring is 500 — 1250 — 1250 — 2000 — 2500 in Div.1 and 500 — 1000 — 1500 — 2250 — 2250 in Div.2

UPD: I'm really sorry about the difficulty. System test is about to begin.

UPD: Editorial is out.

UPD: System test is over, congratulations to the winners.

Div.1 winners are: 1. kcm1700 2. WuHongxun 3. dotorya 4. lawrenceli 5. W4yneb0t 6. Swistakk 7. KADR 8. fqw

Div.2 winners are: 1. korla.march 2. dev.plvlml 3. dantrag 4. ODT 5. ntopia 6. vokeal 7. pyrexshorts 8. _index

Souvenir winners are lawrenceli from team USA and Barsic from Tajikistan team (If that's not true write me in private).