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Random
Hot problems
CCC '24 S2 - Heavy-Light Composition
Max's Anger Contest Series 2 P2 - Password Anger
SAC '22 Code Challenge 5 P2 - Querying Extensions
Max's Anger Contest Series 2 P3 - Array Anger
The Cosmic Era P2 - Uneven Sand
CCC '13 J4 - Time on task
CCC '20 J4 - Cyclic Shifts
Problem ▴
Category
Points
AC %
Users
CCO '06 P1 - CN Tower
CCO
5
25.5%
141
CCO '06 P2 - R & J
CCO
10
20.8%
35
CCO '06 P3 - Codec
CCO
25p
0.0%
0
CCO '06 P4 - CN Tower 2
CCO
30
5.4%
11
CCO '06 P5 - Domino
CCO
30
3.9%
3
CCO '06 P6 - Paint by Numbers
CCO
30
11.0%
9
CCO '07 P1 - Cows
CCO
10
32.3%
185
CCO '07 P2 - Snowflakes
CCO
10
14.5%
980
CCO '07 P3 - Bowling for Numbers++
CCO
20p
10.5%
80
CCO '07 P4 - Gerrymandering
CCO
20p
1.7%
3
CCO '07 P5 - Particle Catcher
CCO
30p
16.3%
10
CCO '07 P6 - Road Construction
CCO
20p
30.4%
181
CCO '08 P1 - Moving Day
CCO
7p
30.5%
106
CCO '08 P2 - King & Weber
CCO
10p
17.6%
69
CCO '08 P3 - Mobile
CCO
17p
31.3%
46
CCO '08 P4 - Herding
CCO
10p
31.5%
221
CCO '08 P5 - Candy
CCO
7p
18.2%
236
CCO '08 P6 - Landing
CCO
45
20.2%
40
CCO '09 P1 - Invasion of the Boxes
CCO
20p
12.8%
22
CCO '09 P2 - Dinner
CCO
20p
9.8%
50
CCO '09 P3 - Beware the Geoducks
CCO
10
9.8%
34
CCO '09 P4 - Bottle Caps
CCO
20p
14.5%
39
CCO '09 P5 - Parade
CCO
17p
17.3%
43
CCO '09 P6 - A Weighty Problem
CCO
12p
16.1%
76
CCO '10 P1 - Barking Dogs!
CCO
10
33.9%
232
CCO '10 P2 - Tree Pruning
CCO
15
29.9%
188
CCO '10 P3 - Wowow
CCO
15p
23.9%
282
CCO '10 P4 - Computer Purchase Return
CCO
10
39.0%
363
CCO '10 P5 - Space Miner
CCO
15
31.5%
52
CCO '10 P6 - Shuffle
CCO
10
35.4%
150
CCO '11 P1 - Putnam
CCO
7
27.6%
108
CCO '11 P2 - Vampire Tunnels
CCO
15p
19.0%
320
CCO '11 P3 - Spies Like Us
CCO
10p
22.8%
203
CCO '11 P4 - Reorganization
CCO
7p
35.1%
215
CCO '11 P5 - Fixing Disks
CCO
40p
7.7%
6
CCO '11 P6 - Biggest (Zero Carbon) Footprint
CCO
15p
12.6%
78
CCO '12 P1 - Choose Your Own Arithmetic
CCO
7
22.8%
223
CCO '12 P2 - The Hungary Games
CCO
15
24.3%
480
CCO '12 P3 - Mhocskian Languages
CCO
20p
49.6%
103
CCO '12 P4 - Editor Distance
CCO
10
33.6%
143
CCO '12 P5 - Sample Size
CCO
7
24.0%
171
CCO '12 P6 - The Winds Of War
CCO
12p
40.1%
67
CCO '13 P1 - All Your Base Belong to Palindromes
CCO
10p
18.6%
209
CCO '13 P2 - Tourney
CCO
12p
42.3%
379
CCO '13 P3 - LHC
CCO
12p
23.3%
404
CCO '13 P4 - A Romantic Movie Outing
CCO
20p
23.5%
91
CCO '13 P5 - Transforming Comets
CCO
15p
19.3%
74
CCO '13 P6 - Repetitivity
CCO
25p
42.0%
197
CCO '14 P1 - Troyangles
CCO
10p
37.8%
619
CCO '14 P2 - King Gruff
CCO
15p
36.2%
253
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