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Hot problems
COCI '08 Contest 3 #2 Kemija
DMOPC '18 Contest 4 P3 - Dr. Henri and Ionization
CCC '25 J3 - Product Codes
Canada Day Contest 2021 - CCC Bad Haha
CCC '17 S3 - Nailed It!
CCC '23 S2 - Symmetric Mountains
CCC '16 S3 - Phonomenal Reviews
Problem
Category
Points
AC %
Users
DMOPC '21 Contest 2 P1 - Bosses
DMOPC
7p
18.1%
277
DMOPC '21 Contest 2 P2 - Scrambling Swaps
DMOPC
7p
23.1%
197
DMOPC '21 Contest 2 P3 - Divisions
DMOPC
12p
8.9%
82
DMOPC '21 Contest 2 P4 - Water Mechanics
DMOPC
15p
23.6%
60
DMOPC '21 Contest 2 P5 - Permutations
DMOPC
25p
14.4%
17
DMOPC '21 Contest 2 P6 - Strange Function
DMOPC
30p
13.4%
11
DMOPC '21 Contest 3 P1 - Sums & Differences
DMOPC
7p
18.3%
215
DMOPC '21 Contest 3 P2 - Weak Data
DMOPC
10p
11.6%
196
DMOPC '21 Contest 3 P3 - Hopping Frogs
DMOPC
15p
21.9%
54
DMOPC '21 Contest 3 P4 - Sorting Subsequences
DMOPC
20p
14.2%
36
DMOPC '21 Contest 3 P5 - Crowded Travels
DMOPC
20p
17.1%
21
DMOPC '21 Contest 3 P6 - Good Grids
DMOPC
30p
10.2%
8
DMOPC '21 Contest 4 P1 - Tree Shopping
DMOPC
7
16.5%
165
DMOPC '21 Contest 4 P2 - Festive Groups
DMOPC
7p
20.4%
241
DMOPC '21 Contest 4 P3 - Palindromic Presents
DMOPC
12p
22.6%
190
DMOPC '21 Contest 4 P4 - Christmas Graph
DMOPC
17p
34.0%
42
DMOPC '21 Contest 4 P5 - Graph Generator
DMOPC
20p
15.7%
17
DMOPC '21 Contest 4 P6 - Balanced Line
DMOPC
35p
5.1%
5
DMOPC '21 Contest 5 P1 - Permutations & Primes
DMOPC
5p
20.7%
461
DMOPC '21 Contest 5 P2 - Permutations & Primes
DMOPC
7
31.8%
362
DMOPC '21 Contest 5 P3 - Permutations & Primes
DMOPC
12p
16.3%
160
DMOPC '21 Contest 5 P4 - Permutations & Primes
DMOPC
17p
11.8%
72
DMOPC '21 Contest 5 P5 - Permutations & Primes
DMOPC
30p
10.9%
28
DMOPC '21 Contest 5 P5 - Permutations & Primes (Hard Version)
DMOPC
40p
3.7%
3
DMOPC '21 Contest 5 P6 - Permutations & Primes
DMOPC
25p
6.2%
22
DMOPC '21 Contest 6 P1 - Bigger Big Integer
DMOPC
3p
47.3%
526
DMOPC '21 Contest 6 P2 - Gacha Luck
DMOPC
7p
29.2%
305
DMOPC '21 Contest 6 P3 - An Art Problem
DMOPC
10p
22.0%
287
DMOPC '21 Contest 6 P4 - Colourful Paths
DMOPC
15p
9.3%
107
DMOPC '21 Contest 6 P5 - Contraband Game
DMOPC
25p
6.1%
13
DMOPC '21 Contest 7 P1 - Chika Grids
DMOPC
5p
26.9%
303
DMOPC '21 Contest 7 P2 - Knitting Scarves
DMOPC
7
23.4%
229
DMOPC '21 Contest 7 P3 - Whack-an-Ishigami
DMOPC
12p
13.8%
86
DMOPC '21 Contest 7 P4 - Rocket Race
DMOPC
17p
7.6%
37
DMOPC '21 Contest 7 P5 - King's Commands
DMOPC
35p
6.3%
7
DMOPC '21 Contest 7 P6 - Rainbow Subgraphs
DMOPC
30p
14.8%
10
DMOPC '21 Contest 8 P1 - Peanut Planning
DMOPC
7p
20.4%
239
DMOPC '21 Contest 8 P2 - Kanna Market
DMOPC
10p
21.6%
153
DMOPC '21 Contest 8 P3 - Weaker Data
DMOPC
25p
6.3%
16
DMOPC '21 Contest 8 P4 - Grid Operations
DMOPC
25p
16.4%
19
DMOPC '21 Contest 8 P5 - Tree Building
DMOPC
25p
9.7%
37
DMOPC '21 Contest 8 P6 - Castle Building
DMOPC
40p
9.6%
19
DMOPC '21 Contest 9 P1 - Board Numbers
DMOPC
7p
18.2%
199
DMOPC '21 Contest 9 P2 - String Puzzle
DMOPC
7p
23.1%
204
DMOPC '21 Contest 9 P3 - Terrible Trains
DMOPC
12p
23.4%
109
DMOPC '21 Contest 9 P4 - Ace of Diamonds
DMOPC
20p
20.3%
50
DMOPC '21 Contest 9 P5 - Chika Circle
DMOPC
20p
11.8%
26
DMOPC '21 Contest 9 P6 - Shortest Paths
DMOPC
30p
33.7%
11
DMOPC '22 Contest 1 P1 - Up-down Sequence
DMOPC
5p
25.4%
274
DMOPC '22 Contest 1 P2 - Hat Swap
DMOPC
10p
24.1%
244
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