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
...
40
41
42
43
44
45
...
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 '24 J3 - Bronze Count
CCC '00 S1 - Slot Machines
CCC '19 S2 - Pretty Average Primes
Problem
Category
Points
AC % ▴
Users
Yet Another Contest 3 P2 - Work Experience
YAC
10p
21.2%
68
TLE '16 Contest 6 (Mock CCC) J4 - Ski Rentals
TLE
7p
21.2%
29
COCI '13 Contest 5 #4 Domine
COCI
12p
21.3%
41
DWITE '10 R4 #3 - Binary Weight
DWITE
5
21.3%
36
IOI '07 P4 - Miners
IOI
15p
21.3%
444
Halloween '14 P1 - Rabbit Girls
Seasonal
3p
21.3%
537
Touching Segments
Uncategorized
20p
21.3%
86
COCI '12 Contest 3 #5 Herkabe
COCI
12p
21.3%
10
DMOPC '19 Contest 7 P3 - Tree Pruning
DMOPC
12p
21.3%
137
UCC Coding Competition '21 P5 - Woodcutting Game
Uncategorized
10p
21.3%
117
Sum of Primes 2
Uncategorized
5p
21.3%
332
New Year's '19 P5 - Best Hat in Town
Seasonal
15
21.3%
14
CCO '02 P2 - Game Show Math
CCO
12
21.4%
35
Bad Paths
Uncategorized
12p
21.4%
48
CCO '15 P1 - Hungry Fox
CCO
15p
21.4%
219
RTE '16 J1 - Board Game
Uncategorized
3
21.4%
295
Mock CCC '22 1 S2 - IU
Mock CCC
5p
21.4%
185
DMOPC '18 Contest 1 P3 - Sorting
DMOPC
12p
21.4%
84
COCI '19 Contest 6 #3 Konstrukcija
COCI
20p
21.4%
2
Purple Lemon
Uncategorized
7p
21.4%
17
DMPG '16 S1 - Admin War II
DMOPC
5p
21.5%
147
ICPC ECNA 2005 E - Reliable Nets
ICPC
15
21.5%
44
CCC '04 S2 - TopYodeller
CCC
5
21.5%
721
Virtuoso
Uncategorized
15
21.5%
40
COCI '09 Contest 5 #3 Kletva
COCI
7
21.5%
32
DMOPC '21 Contest 9 P3 - Terrible Trains
DMOPC
12p
21.5%
82
DMOPC '22 Contest 3 P1 - Holiday Colouring
DMOPC
5p
21.5%
373
ECOO '12 R1 P2 - Decoding DNA
ECOO
5p
21.5%
289
IOI '07 P3 - Sails
IOI
25p
21.5%
210
COI '19 #4 Zagrade
COCI
15p
21.5%
17
Counting Subsequences
Uncategorized
10
21.5%
305
Monkey Motel
Uncategorized
12p
21.5%
23
Mock CCC '18 Contest 1 J5/S3 - A Simulation Problem
Mock CCC
7p
21.6%
122
DMOPC '16 Contest 4 P5 - Migrant Mascot
DMOPC
10p
21.6%
315
Mock DWITE '09 P4 - Lights Out!
Uncategorized
15p
21.6%
34
Wesley's Anger Contest 2 Problem 5 - Oober Treats
WAC
25
21.6%
10
DWITE '11 R2 #4 - Bear Trees
DWITE
10
21.6%
19
COCI '15 Contest 6 #5 Krumpirko
COCI
15p
21.6%
36
COCI '15 Contest 7 #6 Prokletnik
COCI
20
21.6%
15
MNYC '17: Removing Christmas Trees
Seasonal
15p
21.6%
43
DMOPC '17 Contest 2 P4 - Mimi and Dictionary
DMOPC
12p
21.6%
83
ECOO '21 P5 - Waldwick's Walk
ECOO
17p
21.6%
23
COCI '11 Contest 5 #2 Eko
COCI
5p
21.6%
138
CTU Open Contest 2017 - Equinox Roller Coaster
ICPC
15
21.6%
5
ECOO '19 R3 P2 - Array Game
ECOO
12p
21.6%
5
Self-deception
Uncategorized
15
21.6%
264
ECOO '12 R1 P1 - Sluggers
ECOO
5p
21.6%
70
TLE '16 Contest 1 P5 - Battle Plan
TLE
17p
21.6%
44
CCC '05 J5 - Bananas
CCC
10
21.6%
1468
ECOO '18 R2 P2 - Homework
ECOO
10p
21.6%
95
«
1
2
...
40
41
42
43
44
45
...
99
100
»