Home
Problems
>
Submissions
Users
Contests
>
Submissions
Learning
More
>
About
Contact
Status
Capture the Flag
Lessons
FAQ
Achievements
Site Archive
Log in
or
Sign up
This site works best with JavaScript enabled.
Problems
«
1
2
...
10
11
12
13
14
15
16
17
18
19
»
Problem search
Full text search
Has editorial
Show problem types
Category
All
---
CCC
CCO
Classics
Co-Ed
Competitive
ECOO
Girls Invitational
ICS3U
JDCC
LCC
Uncategorized
Point range
Go
Random
Problem
Category
Points
AC %
Users ▾
Larry's Array
Competitive
15p
13.4%
7
AQT's Lights
Competitive
7p
9.7%
7
Material Farming
Competitive
7p
24.1%
7
LCC/Moose '20 Contest 5 J3 - Ping Difference
LCC
5p
18.4%
7
LCC '21 Contest 6 S2 - Palindromes on Trees
LCC
7p
80.0%
7
ECOO '21 P3 - Quintessential Questions
ECOO
3p
43.8%
7
LCC '21 Contest 1 S5 - Beanland
LCC
10p
30.3%
7
LCC '21 Contest 3 S5 - Oscar's Spaceship
LCC
12p
11.9%
7
LCC '21 Contest 5 S3 - Swamp Traversal
Competitive
7p
25.9%
7
Minimum Polynomial Threshold
Uncategorized
5
31.0%
7
Market Analysis
Uncategorized
7
60.0%
7
Birthday Party
Uncategorized
5
38.9%
7
Spanning Tree Range
Competitive
10
66.7%
7
LCC '22 Contest 4 J2 - C See Sea
LCC
5
36.4%
7
Make a Roller Coaster
Competitive
5
43.8%
7
LCC ‘23 Contest 1 S5 - Spooky Children
LCC
12p
38.5%
7
Coin Flipping
Uncategorized
5
29.3%
7
Andyman's Golf Course - Hole 3 - Prefix Sum Array
Uncategorized
0
76.3%
7
CCC '22 J1 - Cupcake Party
CCC
3p
36.0%
7
WBC '25 P1 - Secret Message
Competitive
3
91.7%
7
JDCC '17 Contest 3 S2 - Checking Time
JDCC
5p
10.4%
6
JDCC '17 Contest 3 S3 - Interview Progression
JDCC
7p
11.6%
6
JDCC '16 Contest 1 P4 - Guess My Age
JDCC
7
31.8%
6
JDCC '16 Contest 1 P5 - Catchy Music
JDCC
12p
3.1%
6
JDCC '17 Contest 1 S1 - Oddition Game
JDCC
7
5.0%
6
Girls Invitational '18 S1 - Biology Cheat Sheet
Girls Invitational
5
18.8%
6
A Combining Problem
Uncategorized
20
15.0%
6
Inaho VI
Uncategorized
10p
52.6%
6
Graph Theory 5
Uncategorized
7
43.8%
6
A Tree Problem 2
Uncategorized
15
30.4%
6
LCC/Moose '19 Contest 3 J4 - Hash
LCC
7p
27.6%
6
Middle Squares
Uncategorized
5p
58.8%
6
LCC/Moose '19 Contest 2 S5 - Hip Hop
LCC
17p
11.8%
6
LCC '21 Contest 4 S4 - Art Restoration
LCC
15p
20.0%
6
Art Academy VI: The Last Stand
Uncategorized
11p
53.8%
6
hewmatt10's Card
Competitive
7p
15.8%
6
LCC/Moose '20 Contest 1 J5 - orz Alan
LCC
10p
5.5%
6
LCC/Moose '20 Contest 3 J4 - Chain Lightning
LCC
7p
9.9%
6
LCC/Moose '20 Contest 4 J4 - Tea
LCC
5p
2.8%
6
Santa's Wrath
Competitive
15p
10.0%
6
LCC '21 Contest 2 S4 - Oscar and Aliens
LCC
12p
16.7%
6
March Break Contest '22 Problem 2 - Crazy Sentences
Competitive
7
31.8%
6
March Break Contest '22 Problem 3 - Terradog's Gifts
Competitive
7p
23.5%
6
LCC '23 Contest 2 S2 - How the Cookie Uncrumbles
Uncategorized
7p
7.5%
6
LCC '21 Contest 5 J5 - Marble Groupings
LCC
7
21.4%
6
LCC '22 Contest 1 S4 - Candy Collecting
LCC
15p
26.8%
6
Alternate Universe Chess Pawn
Competitive
7
33.3%
6
LCC '22 Contest 4 J4 - Snake Game
LCC
5p
61.5%
6
LCC '22 Contest 4 S4 - Tourist
LCC
12
17.5%
6
LCC '22 Contest 5 J3 - Guess the Elo
LCC
5
32.0%
6
«
1
2
...
10
11
12
13
14
15
16
17
18
19
»