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
6
7
...
96
97
»
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
CCC '23 S2 - Symmetric Mountains
CCC '09 S1 - Cool Numbers
CCC '23 S1 - Trianglane
CCC '10 J5 - Knight Hop
VM7WC '16 #3 Silver - Can Shahir even get there?!
CCC '09 S3 - Degrees Of Separation
CCC '18 J5 - Choose your own path
Problem
Category
Points
AC %
Users
APIO '11 P3 - Guess My Word!
APIO
30p
24.4%
8
APIO '12 P1 - Dispatching
APIO
17p
25.9%
247
APIO '12 P2 - Guard
APIO
20p
15.7%
40
APIO '12 P3 - Kunai
APIO
40p
13.1%
25
APIO '13 P1 - Robots
APIO
20p
9.7%
11
APIO '13 P2 - Toll
APIO
35p
21.4%
11
APIO '14 P1 - Palindromes
APIO
25p
18.9%
52
APIO '14 P2 - Split the Sequence
APIO
25p
11.5%
124
APIO '14 P3 - Beads and Wires
APIO
25p
22.6%
21
APIO '15 P1 - Bali Sculptures
APIO
20p
22.6%
89
APIO '15 P2 - Jakarta Skyscrapers
APIO
20p
8.3%
98
APIO '15 P3 - Palembang Bridges
APIO
20p
11.4%
56
APIO '16 P1 - Boat
APIO
20p
22.3%
49
APIO '16 P2 - Fireworks
APIO
40p
31.7%
45
APIO '17 P1 - Land of the Rainbow Gold
APIO
30p
18.9%
9
APIO '17 P2 - Travelling Merchant
APIO
20p
22.2%
41
APIO '18 P1 - New Home
APIO
25
5.9%
7
APIO '18 P2 - Circle Selection
APIO
25p
12.8%
5
APIO '18 P3 - Duathlon
APIO
30
31.5%
38
APIO '19 P1 - Strange Device
APIO
20
20.6%
42
APIO '19 P2 - Bridges
APIO
30p
10.4%
34
APIO '19 P3 - Street Lamps
APIO
35p
11.1%
27
APIO '22 P2 - Game
APIO
25p
1.9%
3
APIO '22 P3 - Permutation
APIO
20p
9.3%
11
APIO '23 P1 - Cyberland
APIO
17p
8.5%
28
APIO '23 P2 - Sequence
APIO
25p
11.3%
14
APIO '23 P3 - Alice, Bob, and Circuit
APIO
45p
0.0%
0
A Plus B
Uncategorized
3p
48.4%
7386
A Plus B (Hard)
Uncategorized
12
11.0%
311
Marcus Approximation
Uncategorized
12p
33.2%
39
All Pairs Shortest Path
Classics
20p
8.8%
5
APTX 4869
Uncategorized
10
44.2%
48
Another Random Contest 1 P1 - Chessgame
Uncategorized
5p
28.6%
72
Another Random Contest 1 P2 - Two Sequences
Uncategorized
7p
20.6%
42
Another Random Contest 1 P3 - Physics Olympics
Uncategorized
7p
33.0%
30
Another Random Contest 1 P4 - Bracket Query
Uncategorized
15p
40.8%
26
Another Random Contest 1 P5 - A Strange Country
Uncategorized
15p
21.1%
23
Another Random Contest 1 P6 - Smash Bros
Uncategorized
15p
19.2%
14
Art Academy 0: Prologue
Uncategorized
3p
35.6%
261
Art Academy
Uncategorized
5p
37.6%
48
Art Academy II: The Grand Escape
Uncategorized
7p
23.3%
58
Art Academy III: Sabotage
Uncategorized
20p
11.0%
6
Art Academy IV: Alice's Blazing Fury
Uncategorized
30p
12.3%
4
Art Academy V: Ruin
Uncategorized
12p
25.1%
46
Art Academy VI: The Last Stand
Uncategorized
12p
22.8%
26
Art Academy VII: A Mysterious Object
Uncategorized
12p
43.2%
57
A Simple Mean
Uncategorized
7
11.5%
39
A Simple Maximum
Uncategorized
7
8.7%
28
A Simple Mode
Uncategorized
7p
12.8%
21
A Simple Minus
Uncategorized
10
27.4%
17
«
1
2
3
4
5
6
7
...
96
97
»