Codeforces Round 949 (Div. 2) Editorial

Revision en10, by zltzlt, 2024-05-31 15:37:36

Thank you for participating! Sorry being much harder than usual Div. 2 :( But we still hope you find our problems interesting.

Rating predictions (Inspired by sum's editorial)

1981A - Turtle and Piggy Are Playing a Game

Idea: zltzlt

Hint 1
Hint 2
Solution
Code

1981B - Turtle and an Infinite Sequence

Idea: zltzlt

Hint 1
Hint 2
Solution 1
Solution 2
Code for Solution 1
Code for Solution 2

1981C - Turtle and an Incomplete Sequence

Idea: zltzlt

Hint 1
Hint 2
Solution
Code

1981D - Turtle and Multiplication

Idea: sinsop90

Hint 1
Hint 2
Solution
Code

1981E - Turtle and Intersected Segments

Idea: zltzlt
Developed by 244mhq.

Hint 1
Hint 2
Solution
Code

1981F - Turtle and Paths on a Tree

Idea: yinhee
Developed by 244mhq and zltzlt.
Thanks AFewSuns and crazy_sea for discovering Solution 2, which runs faster than Solution 1!

Hint 1
Hint 2
Solution 1
Solution 2
Code for Solution 1
Code for Solution 2

#### History

Revisions

Rev. Lang. By When Δ Comment
en17 zltzlt 2024-06-10 03:28:45 24
en16 zltzlt 2024-06-03 02:39:36 1
en15 zltzlt 2024-06-03 02:38:41 6
en14 zltzlt 2024-06-03 02:38:03 6
en13 zltzlt 2024-05-31 15:41:05 0 (published)
en12 zltzlt 2024-05-31 15:40:36 4 Tiny change: 'ng! Sorry being muc' -> 'ng! Sorry for being muc'
en11 zltzlt 2024-05-31 15:38:16 8
en10 zltzlt 2024-05-31 15:37:36 95
en9 zltzlt 2024-05-28 13:34:14 1617 Tiny change: '00 | | | | | |\n' -> '00 | | |\n'
en8 zltzlt 2024-05-27 17:25:04 466
en7 zltzlt 2024-05-27 16:46:56 40
en6 zltzlt 2024-05-27 16:34:39 47
en5 zltzlt 2024-05-27 16:33:18 33 Tiny change: '024-5-31] ' -> '024-5-31] and [user: crazy_sea, 2024-5-31] '
en4 zltzlt 2024-05-27 16:31:39 2838
en3 zltzlt 2024-05-27 14:09:45 75
en2 zltzlt 2024-05-27 13:58:52 14 Tiny change: '024-5-31]\n\nDevelope' -> '024-5-31]\\nDevelope'
en1 zltzlt 2024-05-27 13:26:35 17419 Initial revision (saved to drafts)