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Random
Hot problems
Baltic OI '01 P6 - Teleports
PEG Test '11 - Cyclopian Puzzle
ECOO '15 R1 P1 - When You Eat Your Smarties
CCC '25 S4 - Floor is Lava
Longest Increasing Subsequence
COCI '22 Contest 4 #2 Zrinka
DMOPC '13 Contest 3 P5 - A Romantic Dinner
Problem
Category
Points
AC %
Users
CCO '00 P1 - Subsets
CCO
10p
34.8%
280
CCO '00 P2 - Ransom Note
CCO
12p
8.7%
8
CCO '00 P3 - The Game Of 31
CCO
15p
56.5%
12
CCO '00 P4 - Packet Routing
CCO
7p
58.6%
67
CCO '00 P5 - Millikan's Oil Droplet Experiment
CCO
7p
18.3%
56
CCO '00 P6 - Extension Cords
CCO
12p
15.1%
8
CCO '01 P1 - The Monkey Dance
CCO
10p
44.2%
280
CCO '01 P2 - Coke or Chocolate Milk
CCO
12p
16.1%
12
CCO '01 P3 - Partitions
CCO
12p
35.4%
68
CCO '01 P4 - Breaking Level (Standard I/O)
CCO
12p
8.6%
44
CCO '01 P5 - Fast Food
CCO
7p
10.1%
29
CCO '01 P6 - Election Night
CCO
15p
15.4%
49
CCO '02 P1 - Spam
CCO
12p
44.4%
22
CCO '02 P2 - Game Show Math
CCO
12p
22.4%
47
CCO '02 P3 - Return To Blind Man's Bluff
CCO
12p
12.7%
17
CCO '02 P4 - Duathlon
CCO
10p
11.1%
39
CCO '02 P5 - Connect The Campus
CCO
12p
30.6%
111
CCO '02 P6 - Pit Stop Strategy
CCO
12p
41.4%
9
CCO '03 P1 - BFed
CCO
10p
25.5%
62
CCO '03 P2 - Concentration Cards
CCO
15p
34.3%
32
CCO '03 P3 - Cube
CCO
20p
12.4%
16
CCO '03 P4 - Constrained Permutations
CCO
5p
50.3%
168
CCO '03 P5 - Longest Substring
CCO
7p
16.1%
108
CCO '03 P6 - Cheap Gas
CCO
20p
13.2%
82
CCO '04 P1 - Scribble
CCO
5p
42.5%
131
CCO '04 P2 - Hockey Scores
CCO
12p
21.1%
70
CCO '04 P3 - S and K
CCO
15p
5.1%
7
CCO '04 P4 - Return of Space Turtle
CCO
12p
14.1%
46
CCO '04 P5 - Jengaism
CCO
7p
31.8%
116
CCO '04 P6 - Orko
CCO
15p
31.6%
42
CCO '05 P1 - Number Matrix
CCO
10p
24.2%
167
CCO '05 P2 - The Great Spamway Strike
CCO
20p
41.7%
45
CCO '05 P3 - That's News To Me
CCO
20p
0.0%
0
CCO '05 P4 - Primed Sequences
CCO
12p
12.6%
101
CCO '05 P5 - Segments
CCO
10p
44.9%
303
CCO '05 P6 - Windows
CCO
30p
14.7%
29
CCO '06 P1 - CN Tower
CCO
5p
25.9%
146
CCO '06 P2 - R & J
CCO
10p
21.1%
36
CCO '06 P3 - Codec
CCO
25p
1.7%
1
CCO '06 P4 - CN Tower 2
CCO
30p
5.2%
12
CCO '06 P5 - Domino
CCO
30p
5.6%
4
CCO '06 P6 - Paint by Numbers
CCO
40p
4.2%
5
CCO '07 P1 - Cows
CCO
10p
31.9%
190
CCO '07 P2 - Snowflakes
CCO
10p
14.7%
1196
CCO '07 P3 - Bowling for Numbers++
CCO
20p
11.5%
91
CCO '07 P4 - Gerrymandering
CCO
20p
1.8%
4
CCO '07 P5 - Particle Catcher
CCO
30p
16.7%
11
CCO '07 P6 - Road Construction
CCO
20p
30.2%
192
CCO '08 P1 - Moving Day
CCO
7p
29.2%
108
CCO '08 P2 - King & Weber
CCO
10p
17.8%
75
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