Home
Problems
Submissions
Users
Contests
About
>
Status
Tips
API
Github
Log in
or
Sign up
This site works best with JavaScript enabled.
Problems
«
1
2
3
4
5
»
Problem search
Full text search
Has editorial
Show problem types
Category
All
---
AAC
ACC
APIO
Balkan OI
Baltic OI
BlueBook
Brazil OI
Bubble Cup
Bulgarian OI
CCC
CCO
CEOI
China NOI
Classics
COCI
CSPC
CTF
Data Structure Tests
DMOPC
DWITE
ECOO
EGOI
ESOI
FHC
Fun Math
GFSSOC
Google Code Jam
Google Hash Code
Google Kick Start
ICPC
IOI
JOI
Mock CCC
Mock CCO
MWC
Olympiads School
POI
SAC Coding Challenge
Seasonal
SIUCF
Taiwan NOI
TLE
TSOC
Uncategorized
VM7WC
WAC
Waterloo Local
Woburn Challenge
YAC
Point range
Go
Random
Hot problems
Arcadia Computing Contest 1 P2 - Chemistry
Arcadia Computing Contest 1 P3 - ScanTron
Arcadia Computing Contest 1 P5 - Hacking Grades
Arcadia Computing Contest 1 P4 - Cyclic Sorting
CCC '13 J4 - Time on task
String Finding
COCI '08 Contest 3 #1 Pet
Problem
Category
Points
AC %
Users
CCO '00 P1 - Subsets
CCO
10
35.0%
277
CCO '00 P2 - Ransom Note
CCO
12p
8.0%
7
CCO '00 P3 - The Game Of 31
CCO
15
56.5%
12
CCO '00 P4 - Packet Routing
CCO
7
58.1%
65
CCO '00 P5 - Millikan's Oil Droplet Experiment
CCO
7
22.1%
55
CCO '00 P6 - Extension Cords
CCO
12
17.6%
7
CCO '01 P1 - The Monkey Dance
CCO
10
43.6%
270
CCO '01 P2 - Coke or Chocolate Milk
CCO
12
17.1%
11
CCO '01 P3 - Partitions
CCO
12
34.4%
65
CCO '01 P4 - Breaking Level (Standard I/O)
CCO
12
8.4%
42
CCO '01 P5 - Fast Food
CCO
7
10.1%
29
CCO '01 P6 - Election Night
CCO
15
15.2%
47
CCO '02 P1 - Spam
CCO
12
44.4%
22
CCO '02 P2 - Game Show Math
CCO
12
22.0%
44
CCO '02 P3 - Return To Blind Man's Bluff
CCO
12
12.2%
16
CCO '02 P4 - Duathlon
CCO
10
11.1%
39
CCO '02 P5 - Connect The Campus
CCO
12
30.5%
105
CCO '02 P6 - Pit Stop Strategy
CCO
12
41.4%
9
CCO '03 P1 - BFed
CCO
10
25.6%
62
CCO '03 P2 - Concentration Cards
CCO
15
34.3%
32
CCO '03 P3 - Cube
CCO
20p
12.5%
15
CCO '03 P4 - Constrained Permutations
CCO
5
49.0%
165
CCO '03 P5 - Longest Substring
CCO
7p
16.0%
102
CCO '03 P6 - Cheap Gas
CCO
20p
13.2%
81
CCO '04 P1 - Scribble
CCO
5
42.4%
129
CCO '04 P2 - Hockey Scores
CCO
12
20.9%
68
CCO '04 P3 - S and K
CCO
15p
5.1%
7
CCO '04 P4 - Return of Space Turtle
CCO
12
14.1%
46
CCO '04 P5 - Jengaism
CCO
7
31.8%
116
CCO '04 P6 - Orko
CCO
15
31.6%
42
CCO '05 P1 - Number Matrix
CCO
10
24.1%
165
CCO '05 P2 - The Great Spamway Strike
CCO
20
40.8%
44
CCO '05 P3 - That's News To Me
CCO
20
0.0%
0
CCO '05 P4 - Primed Sequences
CCO
12p
12.3%
94
CCO '05 P5 - Segments
CCO
10p
44.5%
296
CCO '05 P6 - Windows
CCO
30p
14.6%
28
CCO '06 P1 - CN Tower
CCO
5
25.5%
142
CCO '06 P2 - R & J
CCO
10
21.1%
36
CCO '06 P3 - Codec
CCO
25p
0.0%
0
CCO '06 P4 - CN Tower 2
CCO
30
5.3%
12
CCO '06 P5 - Domino
CCO
30
3.9%
3
CCO '06 P6 - Paint by Numbers
CCO
30
14.0%
13
CCO '07 P1 - Cows
CCO
10
32.0%
188
CCO '07 P2 - Snowflakes
CCO
10
14.7%
1101
CCO '07 P3 - Bowling for Numbers++
CCO
20p
10.8%
83
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
30.3%
186
CCO '08 P1 - Moving Day
CCO
7p
29.3%
108
CCO '08 P2 - King & Weber
CCO
10p
17.2%
70
«
1
2
3
4
5
»