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
...
13
14
15
16
17
18
...
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
CCC '21 J3 - Secret Instructions
Problem
Category
Points
AC %
▾
Users
Mock CCC '18 Contest 5 J5/S3 - Directed Graph Connectivity
Mock CCC
7p
40.9%
487
Mock CCC '18 Contest 5 S4 - Sparse Binary String Counting
Mock CCC
10p
18.3%
92
Mock CCC '18 Contest 5 S5 - California Boggle
Mock CCC
20p
10.6%
35
DMOPC '17 Contest 4 P4 - Cops and Robbers
DMOPC
7p
20.9%
208
CTU Open Contest 2017 - Amusement Anticipation
ICPC
5
23.9%
30
CTU Open Contest 2017 - Pond Cascade
ICPC
7
37.8%
6
CTU Open Contest 2017 - Forest Picture
ICPC
5
44.4%
9
CTU Open Contest 2017 - Shooting Gallery
ICPC
10
17.0%
10
CTU Open Contest 2017 - Ice Cream Samples
ICPC
12
46.2%
5
CTU Open Contest 2017 - Dark Ride With Monsters
ICPC
7
15.1%
9
CTU Open Contest 2017 - Go Northwest!
ICPC
7
46.2%
9
CTU Open Contest 2017 - Punching Power
ICPC
15
46.3%
15
CCC '18 S1 - Voronoi Villages
CCC
3p
33.5%
3571
CCC '18 S2 - Sunflowers
CCC
5p
39.4%
2808
CCC '18 S3 - RoboThieves
CCC
12p
14.1%
1135
CCC '18 S4 - Balanced Trees
CCC
15p
16.9%
576
CCC '18 S5 - Maximum Strategic Savings
CCC
20p
26.8%
407
DMOPC '17 Contest 4 P0 - Catch
DMOPC
3
24.9%
197
DMOPC '17 Contest 4 P1 - Ribbon Colouring Fun
DMOPC
5p
30.4%
293
DMOPC '17 Contest 4 P5 - Revised IOI
DMOPC
12
28.8%
38
TLE '17 Contest 6 P2 - Mr. More-than-perfect
TLE
5p
20.9%
71
TLE '17 Contest 6 P1 - Molecules
TLE
3p
16.9%
116
DMPG '18 S5 - Mimi and Division
DMOPC
15p
16.2%
170
DMPG '18 B2 - Mimi and Modulus
DMOPC
3p
22.3%
328
IOI '11 P2 - Race
IOI
17p
18.6%
210
DMOPC '17 Contest 5 P2 - Mimi and Binary
DMOPC
5p
20.1%
268
DMOPC '17 Contest 5 P1 - IOI 101
DMOPC
3p
49.4%
477
DMOPC '17 Contest 5 P0 - Mimi and Pizza
DMOPC
3
39.1%
314
DMOPC '17 Contest 5 P6 - Bridges
DMOPC
20p
14.8%
7
DMOPC '17 Contest 5 P4 - Intersecting Arcs
DMOPC
17p
20.4%
63
DMOPC '17 Contest 5 P5 - XOR Bridges
DMOPC
15p
18.7%
52
DMOPC '17 Contest 5 P3 - Mimi and Primes
DMOPC
7p
13.5%
422
TLE '17 Contest 7 P3 - Countless Calculator Computations
TLE
7p
17.2%
142
TLE '17 Contest 7 P1 - Stargazing
TLE
3p
32.4%
257
TLE '17 Contest 7 P2 - Airport Hopping
TLE
5p
29.8%
68
TLE '17 Contest 7 P5 - Willson and Mating
TLE
15p
13.8%
36
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
DMPG '18 G1 - Musical Chairs
DMOPC
10p
27.2%
292
DMPG '18 G2 - Gardening Fun
DMOPC
15p
44.5%
29
TLE '17 Contest 8 P1 - Artificial Intelligence
TLE
7p
9.1%
58
TLE '17 Contest 8 P2 - Ship Defense
TLE
5p
15.1%
199
TLE '17 Contest 8 P3 - Curious Numbers
TLE
10p
14.3%
70
IOI '11 P5 - Dancing Elephants
IOI
40p
10.3%
41
IOI '11 P3 - Rice Hub
IOI
15p
18.2%
125
IOI '05 P6 - Rivers
IOI
20p
30.0%
286
IOI '07 P4 - Miners
IOI
15p
21.2%
444
Baltic OI '18 P1 - Love Polygon
Baltic OI
20p
19.7%
40
Baltic OI '18 P2 - Martian DNA
Baltic OI
10p
35.4%
149
«
1
2
...
13
14
15
16
17
18
...
99
100
»