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Hot problems
DWITE '10 R3 #3 - Dominos Tiling
APIO '10 P1 - Commando
Counting Subsequences
A Math Contest P5 - Good Arrays
ECOO '13 R1 P1 - Take a Number
CCC '04 S2 - TopYodeller
CCC '24 J3 - Bronze Count
Problem
Category
Points ▾
AC %
Users
Mock CCC '15 S5 - Kongou
Mock CCC
40p
3.9%
13
Mock CCC '22 1 S5 - Berkeley Math Tournament Awards Ceremony
Mock CCC
35p
5.5%
7
Mock CCC '22 2 S5 - Kaguya Wants to go Window Shopping with Kei Shirogane
Mock CCC
30p
5.5%
5
TLE '16 Contest 6 (Mock CCC) S4 - Bubble Sort
TLE
25p
6.4%
11
Mock CCC '19 Contest 2 S4 - Tudor Walks Among the Goats
Mock CCC
25p
6.8%
8
CCCHK '15 S5 - Can I pass the courses?
CCC
25p
5.0%
6
Mock CCC '21 S5 - Clique and Independent Set
Mock CCC
25p
18.3%
11
Riolku's Mock CCC S5 - Keen Keener Multiset
Mock CCC
25p
6.6%
13
Mock CCC '23 1 S5 - The Obligatory Data Structures Problem
Mock CCC
25p
14.0%
10
Mock CCC '23 2 S5 - The Obligatory Data Structures Problem
Mock CCC
25p
11.5%
4
CCC '14 S5 - Lazy Fox
CCC
20p
17.9%
456
CCC '10 S5 - Nutrient Tree
CCC
20p
19.7%
269
CCC '16 S5 - Circle of Life
CCC
20p
22.5%
578
TLE '16 Contest 6 (Mock CCC) S5 - Toll Routes
TLE
20p
3.9%
26
CCC '17 S5 - RMT
CCC
20p
19.2%
245
Mock CCC '18 Contest 3 S5 - A Rage Tree Problem
Mock CCC
20p
11.2%
46
Mock CCC '18 Contest 5 S5 - California Boggle
Mock CCC
20p
10.6%
35
CCC '18 S5 - Maximum Strategic Savings
CCC
20p
26.8%
407
Mock CCC '19 Contest 1 S5 - Pusheen Eats Even More Tuna Sashimi and Tuna Nigiri
Mock CCC
20
2.3%
9
CCC '19 S5 - Triangle: The Data Structure
CCC
20p
17.9%
359
CCC '19 S4 - Tourism
CCC
20p
7.7%
249
CCC '19 J5 - Rule of Three
CCC
20p
0.7%
7
Mock CCC '20 S4 - Valentine's Day Shopping
Mock CCC
20p
7.9%
15
Mock CCC '20 Contest 2 S5 - Sticks
Mock CCC
20p
2.3%
4
CCC '02 S4 - Bridge Crossing (Hard)
CCC
20
8.5%
32
CCC '00 S5 - Sheep and Coyotes (Hard)
CCC
20
5.6%
21
Mock CCC '22 1 S4 - Berkeley Math Tournament Statistics
Mock CCC
20p
8.7%
31
CCC '23 S5 - The Filter
CCC
20p
16.3%
88
Mock CCC '24 Contest 1 S5 - Mock CCC 2025
Mock CCC
20p
14.2%
18
CCC '24 S5 - Chocolate Bar Partition
CCC
20p
9.8%
21
CCC '15 S5 - Greedy For Pies
CCC
17p
23.5%
555
CCC '17 S4 - Minimum Cost Flow
CCC
17p
14.1%
771
CCC '20 S5 - Josh's Double Bacon Deluxe
CCC
17p
29.6%
258
CCC '22 S5 - Good Influencers
CCC
17p
32.6%
186
CCC '06 S5 - Origin of Life
CCC
15
18.6%
119
CCC '03 S4 - Substrings
CCC
15p
7.7%
372
CCC '14 S4 - Tinted Glass Window
CCC
15p
29.2%
673
CCC '13 S5 - Factor Solitaire
CCC
15p
42.8%
735
CCC '12 S4 - A Coin Game
CCC
15
27.1%
458
CCC '11 S4 - Blood Distribution
CCC
15p
7.8%
158
CCC '10 S3 - Firehose
CCC
15p
18.6%
651
CCC '10 S4 - Animal Farm
CCC
15p
25.6%
529
Mock CCC '15 S4 - Ice Pillars
Mock CCC
15p
29.0%
106
CCC '15 S4 - Convex Hull
CCC
15p
27.4%
1161
CCC '16 S4 - Combining Riceballs
CCC
15p
28.8%
947
CCCJQR P5
Seasonal
15p
21.0%
22
CCCHK '15 J5 - No friends in the same group.
CCC
15p
9.8%
33
CCC '02 S3 - Blindfold
CCC
15
6.1%
150
TLE '16 Contest 6 (Mock CCC) S3 - Hyper Fax
TLE
15p
17.1%
155
Mock CCC '18 Contest 1 S5 - A Palindrome Problem
Mock CCC
15p
8.5%
18
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