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
3
4
5
6
...
15
16
»
Problem search
Full text search
Show problem types
Category
All
---
CCO
Classics
Co-Ed
Competitive
ECOO
Girls Invitational
ICS3U
JDCC
LCC
Uncategorized
Point range
Go
Random
Problem
Category ▴
Points
AC %
Users
Santa and Hats
Competitive
3
53.6%
63
Santa and Letters
Competitive
5
58.6%
38
Santa and Wages
Competitive
5p
17.3%
28
Santa and Flight Paths
Competitive
7
88.0%
16
Santa and Pipes
Competitive
5
37.6%
25
Santa and Cookies
Competitive
7p
19.0%
14
Santa and Sleighs
Competitive
7
53.2%
17
Santa and Reindeer
Competitive
7p
20.2%
12
Santa's Wrath
Competitive
15p
10.0%
6
March Break Contest '22 Problem 2 - Crazy Sentences
Competitive
7
31.8%
6
March Break Contest '22 Problem 8 - Sora's Empire
Competitive
12p
21.1%
4
March Break Contest '22 Problem 1 - Bob's Dice Game
Competitive
7p
28.0%
5
March Break Contest '22 Problem 4 - Good Numbers
Competitive
10p
35.3%
4
March Break Contest '22 Problem 3 - Terradog's Gifts
Competitive
7p
23.5%
6
March Break Contest '22 Problem 7 - Wild Ratings
Competitive
10p
11.8%
2
March Break Contest '22 Problem 6 - A Binary String Problem
Competitive
10
37.5%
3
March Break Contest '22 Problem 5 - Good Arrays
Competitive
7p
80.0%
4
LCC '21 Contest 5 S3 - Swamp Traversal
Competitive
7p
25.9%
7
Temperature Classifier
Competitive
3
58.6%
82
Medians
Competitive
5
57.8%
56
Yard Sale
Competitive
7p
19.6%
26
Post Office
Competitive
7
38.2%
22
Ping-Pong Tube
Competitive
5p
29.2%
22
Max Value Subarrays
Competitive
10p
40.5%
9
Alice's Number Guessing Game
Competitive
3
48.8%
19
Tree Sustainability
Competitive
7
19.4%
12
Prefix Sum Prefix Sum Array
Competitive
3
78.6%
19
Derek and Stocks
Competitive
5p
30.5%
14
Tree Centroids
Competitive
7
17.2%
5
Spanning Tree Range
Competitive
10
66.7%
7
Cake Appearance
Competitive
5p
41.7%
9
Diamonds
Competitive
7p
9.4%
4
A Times B II
Competitive
5p
16.8%
14
Space Nap
Competitive
7p
35.9%
11
Wishlist Worries
Competitive
17p
41.7%
3
Goofy Function
Competitive
5
22.2%
16
Toad
Competitive
7p
43.2%
13
Alternate Universe Chess Pawn
Competitive
7
33.3%
6
True or False
Competitive
5
47.6%
9
Make a Roller Coaster
Competitive
5
43.8%
7
Magical Flowers
Competitive
7
12.5%
9
Othello
Competitive
10
26.3%
5
Jonathan's Cross Country
Competitive
10
36.8%
6
ECOO '21 Practice P5 - Rockets
ECOO
7p
19.6%
4
ECOO '21 Practice P3 - Turin's Thrifty Threads
ECOO
5p
31.6%
11
ECOO '21 Practice P4 - Noisy Commute
ECOO
7p
13.6%
4
ECOO '21 Practice P6 - Eggs
ECOO
12p
31.0%
3
ECOO '21 Practice P2 - High Fiver!
ECOO
3p
66.2%
24
ECOO '21 Practice P1 - Tootsie Rolls!
ECOO
3p
57.1%
20
ECOO '21 P1 - Many Messages
ECOO
3p
57.1%
12
«
1
2
3
4
5
6
...
15
16
»