Author: isaf27

Author: 300iq

Statements and editorial: scanhex

Author: scanhex

Solution

Author: isaf27

Author: altruist

Author: altruist

Author: scanhex

Solution 1

Solution 2

Hey everyone!

I'm glad to invite you to Codeforces Round 534 (Div. 1) and Codeforces Round 534 (Div. 2), they will start on Jan/22/2019 17:35 (Moscow time). The round will be rated for both divisions.

Problems were prepared by me, Ivan isaf27 Safonov, Denis altruist Anishchenko and Ildar 300iq Gaynullin. Thanks to Um_nik for testing and MikeMirzayanov for the great Codeforces and Polygon platforms.

You will be given five problems in each division and two hours to solve them.

UPD: Score distribution: Div1:500-1000-2000-3000-3500, Div2:500-1000-1500-2000-3000

UPD: Congratulations to the winners!

Div. 1:

1. mnbvmar

2. whzzt

3. aid

4. dotorya

5. TLE

Div. 2:

1. aequa

2. RatingBooster_2

3. ujerpacul

4. Igor_Zakharov

5. halohalo

UPD: Editorial