### waaitg's blog

By waaitg, history, 3 months ago,

1708A - Difference Operations

idea: Imakf

Solution
Code

1708B - Difference of GCDs

idea: waaitg

Solution
Code

1707A - Doremy's IQ

idea: Imakf

Solution
Code of solution 1
Code of solution 2

1707B - Difference Array

idea: Imakf and waaitg

Unfortunately, a harder version of this problem has appeared in a codechef contest here.

In fact, this problem was come up with more than 1 year ago, earlier than the problem in that codechef contest. We are sorry again.

Solution
Code

1707C - DFS Trees

idea: waaitg

Solution
Code

1707D - Partial Virtual Trees

idea: Imakf and waaitg

Solution
Code

1707E - Replace

idea: Wolam, Imakf and waaitg

Solution
Code

1707F - Bugaboo

This is a noun almost one year ago when this problem came out.

idea: Imakf and waaitg

Solution
Code

• +172

By waaitg, history, 3 months ago,

Hello, Codeforces!

Imakf and I are glad to invite you to Codeforces Round #808 (Div. 1) and Codeforces Round #808 (Div. 2), which will take place on Jul/16/2022 17:35 (Moscow time). In both divisions, you will be given 6 problems and 2 hours to solve them all.

We would like to thank:

Score distribution will be announced before the round.

Wish you all wouldn't gain negative ratings in this round! (This is theoretically possible XD)

UPD1: Score distribution is

Div 2: $500 - 1000 - 1500 - 1750 - 2250 - 3000$

Div 1: $500 - 750 - 1250 - 1750 - 2500 - 3250$

UPD2: Editorial

UPD3: Congratulations to the winners!

Div 1

Div. 2