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Hot problems
CCC '19 S2 - Pretty Average Primes
IOI '06 P2 - Pyramid
Knapsack 4
UACC 1 P3 - Cheeky Checkers
ACSL '09 Practice P4 - Rank
COCI '12 Contest 3 #3 Malcolm
IOI '07 P4 - Miners
Problem
Category
Points ▾
AC %
Users
CCC '21 S4 - Daily Commute
CCC
12p
26.1%
583
CCC '24 S4 - Painting Roads
CCC
12p
36.4%
155
CCC '13 S3 - Chances of Winning
CCC
10
41.1%
1363
CCC '05 J5 - Bananas
CCC
10
21.6%
1467
CCC '06 S4 - Groups
CCC
10
46.5%
327
CCC '04 J5 - Fractals
CCC
10
35.7%
220
CCC '07 S5 - Bowling for Numbers
CCC
10p
29.9%
864
CCC '08 S5 - Nukit
CCC
10p
37.2%
705
CCC '08 S4 - Twenty-four
CCC
10
25.5%
739
CCC '96 S4 - When in Rome
CCC
10
33.0%
569
CCC '09 S3 - Degrees Of Separation
CCC
10
28.0%
1344
CCC '09 S2 - Lights Going On and Off
CCC
10
40.5%
897
CCC '09 S4 - Shop and Ship
CCC
10
21.0%
1029
CCC '11 S3 - Alice Through the Looking Glass
CCC
10p
36.1%
1194
CCC '03 S5 - Trucking Troubles
CCC
10p
17.5%
681
CCC '15 S3 - Gates
CCC
10p
18.7%
1775
CCC '15 J5 - π-day
CCC
10p
27.5%
1461
CCOQR '16 - Stupendous Bowties
CCC
10p
31.8%
247
CCC '05 S3 - Quantum Operations
CCC
10p
34.8%
439
CCC '05 S4 - Pyramid Message Scheme
CCC
10
35.7%
816
CCC '01 S4 - Cookies
CCC
10
19.1%
414
CCC '01 S5 - Post's Correspondence Problem
CCC
10
28.9%
315
CCC '02 S4 - Bridge Crossing
CCC
10p
37.2%
883
CCC '02 S5 - Follow the Bouncing Ball
CCC
10
13.8%
190
CCC '98 S4 - Lottery
CCC
10
9.6%
92
CCC '98 S5 - Mountain Passage
CCC
10
13.0%
148
CCC '97 S5 - Long Division
CCC
10
9.9%
65
CCC '00 S5 - Sheep and Coyotes
CCC
10p
4.1%
175
CCC '04 S3 - Spreadsheet
CCC
10
27.0%
614
CCC '04 S4 - Space Turtle
CCC
10p
19.7%
185
CCC '04 S5 - Super Plumber
CCC
10p
23.8%
402
CCC '20 S2 - Escape Room
CCC
10p
12.8%
1690
CCCHK '15 S2 - Matching Problem
CCC
10p
4.9%
14
CCC '06 J5 - CCC Othello
CCC
10p
36.0%
228
CCC '21 S3 - Lunch Concert
CCC
10p
24.6%
1017
CCC '22 S3 - Good Samples
CCC
10p
18.3%
651
CCC '22 J5 - Square Pool
CCC
10p
20.5%
462
CCC '23 S3 - Palindromic Poster
CCC
10p
15.4%
420
CCC '23 J5 - CCC Word Hunt
CCC
10p
24.1%
526
CCC '24 S3 - Swipe
CCC
10p
17.9%
166
CCC '14 S3 - The Geneva Confection
CCC
7p
26.4%
2804
CCC '06 J4 - It's tough being a teen!
CCC
7
41.5%
1241
CCC '11 J4 - Boring Business
CCC
7
27.8%
1505
CCC '08 S3 - Maze
CCC
7
29.3%
1561
CCC '07 J5 - Keep on Truckin'
CCC
7
19.7%
1069
CCC '08 J4 - From Prefix to Postfix
CCC
7
42.8%
887
CCC '13 S4 - Who is Taller?
CCC
7
16.8%
1227
CCC '10 J5 - Knight Hop
CCC
7
36.6%
2403
CCC '09 J4 - Signage
CCC
7
29.2%
684
CCC '12 S3 - Absolutely Acidic
CCC
7
26.6%
1842
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