Hi, codeforces!

I am happy to invite you to the codeforces round #493, which happens at Jul/01/2018 17:05 (Moscow time).

This round writers are — Ildar 300iq Gainullin, Grigory vintage_Vlad_Makeev Reznikov, Mike MikeMirzayanov Mirzayanov, and me, cdkrot.

Big thanks for people, who tested round — Shiqing cyand1317 Lyu, Andrew GreenGrape Rayskiy, Ivan isaf27 Safonov, Alexey Aleks5d Upirvitsky. Also thanks to Mike MikeMirzayanov Mirzayanov and Nikolay KAN Kalinin for help with round preparation.

And to Mike MikeMirzayanov Mirzayanov for codeforces and polygon systems.

Traditionally, there will be 5 problems for 2 hours. I hope you will enjoy the problemset, good luck and have fun!

Scoring distribution will be published before the round.

UPD: Scoring distribution is as follows:

Div1: 500 1250 1500 2500 3000

Div2: 500 1000 1250 2000 2500

You may also want to check this post for post-contest stream.

UPD2: The editorial was published!

UPD3: Congratulations to winners!

Div1:

1. TLE
2. ksun48
3. fateice
4. Swistakk
5. Um_nik
6. Petr
7. V--o_o--V
8. consecutivelimit
9. LHiC
10. uwi

Div2:

1. kirisamejin
2. liu_runda
3. AntiLeaf
4. TheFallenOne
5. haj_lemon
6. st-Firdavs
7. traxex
8. paladin
9. kmyiu
10. Maxim