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
8
»
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 ▴
DMOPC '22 Contest 5 P5 - Twos and Threes
DMOPC
25
18.0%
17
DMOPC '21 Contest 3 P5 - Crowded Travels
DMOPC
20p
20.8%
18
DMOPC '20 Contest 6 P6 - Dumping Buckets
DMOPC
25p
9.7%
18
DMOPC '16 Contest 3 P5 - Shoe Shopping II
DMOPC
15p
31.3%
19
DMOPC '22 Contest 3 P6 - Compressibility
DMOPC
25p
8.0%
19
DMOPC '15 Contest 5 P6 - Event Horizon
DMOPC
25p
11.1%
20
DMOPC '21 Contest 5 P6 - Permutations & Primes
DMOPC
25p
6.2%
20
DMOPC '14 Contest 5 P5 - Attack on Anti-Spiral
DMOPC
25p
16.7%
22
DMOPC '15 Contest 3 P6 - Gala
DMOPC
30p
11.3%
22
DMOPC '20 Contest 2 P5 - Majority Subarrays
DMOPC
25p
6.6%
22
DMOPC '22 Contest 3 P4 - Sketchy Cereal
DMOPC
30p
4.9%
22
DMOPC '22 Contest 5 P4 - Ricochet
DMOPC
17p
7.8%
22
DMOPC '19 Contest 2 P6 - Two Roots
DMOPC
20p
12.0%
23
DMOPC '19 Contest 3 P5 - Festival
DMOPC
20
11.5%
23
DMOPC '14 Contest 4 P5 - Aircraft Carrier Akagi
DMOPC
20p
40.1%
24
DMOPC '16 Contest 2 P5 - Tormented in Tartarus
DMOPC
15p
8.4%
24
DMOPC '20 Contest 6 P5 - Jennifer's Math Mystery
DMOPC
17p
11.8%
24
DMOPC '20 Contest 4 P6 - Petty Children
DMOPC
25p
20.8%
24
DMOPC '21 Contest 5 P5 - Permutations & Primes
DMOPC
30p
10.9%
24
DMOPC '21 Contest 9 P5 - Chika Circle
DMOPC
20p
11.7%
25
DMOPC '16 Contest 2 P6 - Console Simulator 2017
DMOPC
12p
11.9%
26
DMOPC '19 Contest 5 P6 - Cecilia's Computational Crisis
DMOPC
20p
8.2%
26
DMOPC '20 Contest 2 P6 - Unfair Game
DMOPC
25p
16.0%
26
DMOPC '19 Contest 6 P6 - Math is Difficult
DMOPC
25p
16.1%
28
DMOPC '20 Contest 7 P3 - Senpai and Art
DMOPC
20p
10.7%
28
DMOPC '21 Contest 10 P6 - Median Replace
DMOPC
25p
18.8%
28
DMOPC '22 Contest 2 P4 - Falling Leaves
DMOPC
20p
24.3%
28
DMOPC '22 Contest 3 P5 - Alice Rebalancing
DMOPC
20p
7.3%
28
DMOPC '18 Contest 1 P6 - Sorting
DMOPC
20p
18.7%
30
DMOPC '20 Contest 4 P5 - Cyclic Cypher
DMOPC
17p
10.0%
31
DMOPC '21 Contest 10 P4 - Bitwise Telephone
DMOPC
17p
3.9%
31
DMOPC '15 Contest 7 P4 - Magic
DMOPC
10p
10.3%
32
DMOPC '18 Contest 1 P5 - Sorting
DMOPC
12p
24.7%
32
DMOPC '19 Contest 1 P5 - Broken String
DMOPC
17
9.0%
32
DMOPC '20 Contest 1 P6 - Victor Identifies Software
DMOPC
25p
16.1%
32
DMOPC '20 Contest 5 P5 - Slacking Off Again
DMOPC
20p
17.6%
32
DMOPC '21 Contest 3 P4 - Sorting Subsequences
DMOPC
20p
14.2%
32
DMOPC '22 Contest 2 P6 - Yogyakarta Elevators
DMOPC
25p
9.0%
32
DMOPC '14 Contest 1 P6 - Biology Homework
DMOPC
17p
18.7%
33
DMOPC '21 Contest 8 P5 - Tree Building
DMOPC
25p
9.2%
33
DMOPC '13 Contest 3 P4 - Snowman
DMOPC
15p
12.5%
34
DMOPC '21 Contest 7 P4 - Rocket Race
DMOPC
17p
7.1%
34
DMOPC '14 Contest 6 P5 - Planning
DMOPC
15p
23.6%
36
DMOPC '17 Contest 2 P6 - Lazy Days
DMOPC
15p
15.4%
36
DMOPC '20 Contest 6 P4 - Land of the Carrot Trees II
DMOPC
17p
19.7%
36
DMOPC '22 Contest 4 P5 - Blackboard Game
DMOPC
17p
12.2%
36
DMOPC '22 Contest 4 P4 - Anki Reviews
DMOPC
17p
13.7%
36
DMOPC '16 Contest 3 P6 - Long Lost Love
DMOPC
17p
18.9%
37
DMOPC '15 Contest 4 P5 - Scribe
DMOPC
15p
26.7%
38
DMOPC '15 Contest 4 P6 - Alarms
DMOPC
12p
37.5%
38
«
1
2
3
4
5
6
7
8
»