nor's blog

By nor, 13 months ago, In English

It's been about 5 years since the round took place, and since there was no editorial all this time, I decided to write one myself.

Thanks to tfg for discussing problem F with me and coming up with the permutation interpretation that makes it much easier to reason about the problem. The idea in F was also inspired by other submissions.

1060A - Phone Numbers

Hints/intuition
Solution

Submission: 196688903

1060B - Maximum Sum of Digits

Hints/intuition
Solution

Submission: 196689846

1060C - Maximum Subrectangle

Hints/intuition
Solution

Submission: 196755317

1060D - Social Circles

Hints/intuition
Solution

Submission: 196760424

1060E - Sergey and Subway

Hints/intuition
Solution

Submission: 196767377

1060F - Shrinking Tree

Hints/intuition
Solution

Submission: 196942805

1060G - Balls and Pockets

Hints/intuition
Solution

Submission: 196921763

1060H - Sophisticated Device

Hints/intuition
Solution

Submission: 196822812

  • Vote: I like it
  • +240
  • Vote: I do not like it

»
13 months ago, # |
  Vote: I like it +96 Vote: I do not like it

bump

»
10 months ago, # |
  Vote: I like it -8 Vote: I do not like it

$$$bump$$$