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Random
Hot problems
CCC '24 J3 - Bronze Count
CCC '00 S1 - Slot Machines
CCC '19 S2 - Pretty Average Primes
Problem
Category ▴
Points
AC %
Users
CCC '16 S3 - Phonomenal Reviews
CCC
12p
26.4%
1103
CCC '16 S5 - Circle of Life
CCC
20p
22.6%
577
CCC '16 J1 - Tournament Selection
CCC
3
41.2%
4702
CCC '16 J2 - Magic Squares
CCC
3
34.7%
3242
CCC '16 J3 - Hidden Palindrome
CCC
5
45.9%
2551
CCC '16 J4 - Arrival Time
CCC
5
29.0%
1676
CCOQR '16 - Stupendous Bowties
CCC
10p
31.8%
247
CCOQR '16 - Through A Maze Darkly
CCC
20p
18.3%
103
CCOQR '16 - Data Structure
CCC
15p
22.1%
177
CCCHK '15 J1 - Rock-paper-scissors
CCC
3
51.8%
851
CCCHK '15 J2 - What is the minimum area?
CCC
5
35.6%
264
CCCHK '15 J3 - Queens can't attack me!
CCC
5
50.6%
611
CCCHK '15 J4 - Where to build my house?
CCC
5
17.5%
247
CCCHK '15 J5 - No friends in the same group.
CCC
15p
9.8%
33
CCC '05 S3 - Quantum Operations
CCC
10p
34.8%
439
CCC '05 S4 - Pyramid Message Scheme
CCC
10
35.7%
817
CCC '01 S4 - Cookies
CCC
10
19.1%
415
CCC '05 J4 - Cross Spiral
CCC
7p
32.6%
577
CCC '01 S5 - Post's Correspondence Problem
CCC
10
28.9%
315
CCC '96 S2 - Divisibility by 11
CCC
7
6.8%
179
CCC '96 S5 - Maximum Distance
CCC
7
25.4%
417
CCC '96 S3 - Pattern Generator
CCC
5
10.8%
348
CCC '98 S2 - Cross Number Puzzle
CCC
5
43.1%
495
CCC '01 S3 - Strategic Bombing
CCC
7
38.7%
1456
CCC '01 S1 - Keeping Score
CCC
5
32.7%
1502
CCC '01 S2 - Spirals
CCC
5
41.2%
912
CCC '02 S3 - Blindfold
CCC
15
6.1%
150
CCC '02 S4 - Bridge Crossing
CCC
10p
37.2%
884
CCC '02 S5 - Follow the Bouncing Ball
CCC
10
13.8%
190
CCC '00 S4 - Golf
CCC
7
24.4%
2297
CCC '98 S3 - Mars Rover
CCC
7p
16.5%
161
CCC '98 S4 - Lottery
CCC
10
9.6%
92
CCC '98 S5 - Mountain Passage
CCC
10
13.0%
148
CCC '97 S1 - Sentences
CCC
5
29.4%
1019
CCC '97 S2 - Nasty Numbers
CCC
5
45.9%
794
CCC '97 S3 - Double Knockout Competition
CCC
5
10.0%
158
CCC '97 S4 - Dynamic Dictionary Coding
CCC
5
11.8%
221
CCC '97 S5 - Long Division
CCC
10
9.9%
65
CCC '99 S1 - Card Game
CCC
5
31.4%
998
CCC '99 S2 - Year 2000
CCC
7
14.6%
105
CCC '99 S3 - Divided Fractals
CCC
7
16.5%
68
CCC '99 S4 - A Knightly Pursuit
CCC
12
18.7%
348
CCC '99 S5 - Letter Arithmetic
CCC
12
16.0%
77
CCC '00 J1 - Calendar
CCC
5
11.2%
1352
CCC '00 J2 - 9966
CCC
3
35.8%
1953
CCC '00 S1 - Slot Machines
CCC
5
27.3%
4510
CCC '00 S2 - Babbling Brooks
CCC
7
34.1%
2530
CCC '00 S5 - Sheep and Coyotes
CCC
10p
4.1%
176
CCC '00 S3 - Surfing
CCC
7
17.5%
620
CCCHK '08 J1 - Best fish
CCC
3
38.1%
805
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