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
...
92
93
94
95
96
97
98
99
100
»
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
DWITE '10 R3 #3 - Dominos Tiling
ECOO '13 R1 P1 - Take a Number
APIO '10 P1 - Commando
CCC '24 J5 - Harvest Waterloo
CCC '24 J3 - Bronze Count
CCC '24 J4 - Troublesome Keys
CCC '04 S2 - TopYodeller
Problem
Category ▾
Points
AC %
Users
CCC '23 S3 - Palindromic Poster
CCC
10p
15.3%
420
CCC '23 S4 - Minimum Cost Roads
CCC
15p
19.6%
256
CCC '23 S5 - The Filter
CCC
20p
16.3%
88
CCC '23 J1 - Deliv-e-droid
CCC
3p
55.4%
1733
CCC '23 J5 - CCC Word Hunt
CCC
10p
24.2%
532
CCC '23 J2 - Chili Peppers
CCC
3p
53.5%
1636
CCC '23 J3 - Special Event
CCC
5p
38.3%
1301
CCC '24 S1 - Hat Circle
CCC
3p
68.2%
499
CCC '24 S2 - Heavy-Light Composition
CCC
5p
55.1%
452
CCC '24 S3 - Swipe
CCC
10p
17.6%
173
CCC '24 S4 - Painting Roads
CCC
12p
35.9%
164
CCC '24 S5 - Chocolate Bar Partition
CCC
20p
9.8%
21
CCC '24 J1 - Conveyor Belt Sushi
CCC
3p
76.8%
610
CCC '24 J2 - Dusa And The Yobis
CCC
3p
61.3%
496
CCC '24 J3 - Bronze Count
CCC
5p
46.9%
487
CCC '24 J4 - Troublesome Keys
CCC
5p
21.9%
308
CCC '24 J5 - Harvest Waterloo
CCC
7p
37.5%
349
Baltic OI '07 P1 - Escape
Baltic OI
20p
17.2%
39
Baltic OI '07 P2 - Sorting
Baltic OI
40p
11.0%
7
Baltic OI '07 P3 - Sound
Baltic OI
10p
33.2%
276
Baltic OI '18 P1 - Love Polygon
Baltic OI
20p
19.7%
40
Baltic OI '18 P2 - Martian DNA
Baltic OI
10p
35.4%
149
Baltic OI '18 P3 - Worm Worries
Baltic OI
30p
4.0%
5
Baltic OI '18 P4 - Alternating Current
Baltic OI
25p
11.6%
7
Baltic OI '18 P5 - Genetics
Baltic OI
25p
14.5%
45
Baltic OI '18 P6 - Paths
Baltic OI
15p
32.8%
99
Baltic OI '06 P1 - Bitwise Expressions
Baltic OI
15p
37.8%
9
Baltic OI '06 P2 - Coin Collector
Baltic OI
12
19.0%
24
Baltic OI '13 P6 - Vim
Baltic OI
20p
17.6%
3
Baltic OI '19 P6 - Olympiads
Baltic OI
20p
20.3%
34
Baltic OI '13 P2 - Palindrome-Free Numbers
Baltic OI
15p
27.4%
85
Baltic OI '13 P5 - Tracks in the Snow
Baltic OI
12p
30.0%
87
Baltic OI '19 P4 - Tom's Kitchen
Baltic OI
15p
25.1%
73
Baltic OI '19 P2 - Nautilus
Baltic OI
15p
32.8%
68
Baltic OI '19 P3 - Alpine Valley
Baltic OI
20p
22.6%
56
Baltic OI '19 P5 - Necklace
Baltic OI
17p
11.7%
19
Baltic OI '17 P6 - Cat in a tree
Baltic OI
15p
35.0%
107
Baltic OI '17 P4 - Friends
Baltic OI
35p
25.0%
5
Baltic OI '17 P5 - Plus Minus
Baltic OI
15p
38.5%
27
Baltic OI '17 P1 - Political Development
Baltic OI
25p
23.2%
29
Baltic OI '17 P3 - Railway
Baltic OI
17p
34.6%
76
Baltic OI '17 P2 - Toll
Baltic OI
20p
47.6%
40
Baltic OI '16 P1 - Bosses
Baltic OI
10p
41.4%
37
Baltic OI '16 P2 - Park
Baltic OI
20p
51.7%
11
Baltic OI '16 P3 - Spiral
Baltic OI
30p
13.3%
4
Baltic OI '16 P4 - Cities
Baltic OI
15p
32.1%
25
Baltic OI '16 P6 - Swap
Baltic OI
15p
30.3%
7
Baltic OI '16 P5 - Maze
Baltic OI
25p
2.3%
8
Baltic OI '20 P3 - Joker
Baltic OI
25p
14.9%
16
Baltic OI '05 P1 - Camouflaged camp
Baltic OI
12
44.8%
43
«
1
2
...
92
93
94
95
96
97
98
99
100
»