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
...
42
43
44
45
46
47
...
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
COCI '08 Contest 4 #6 Periodni
Fibonacci Sequence
COCI '23 Contest 5 #4 Rolete
COCI '23 Contest 5 #1 Zlagalica
APIO '09 P1 - Digging for Oil
CCC '24 J5 - Harvest Waterloo
Problem ▴
Category
Points
AC %
Users
DMOPC '19 Contest 5 P5 - Crazy Cyclic Coincidences
DMOPC
17p
19.7%
43
DMOPC '19 Contest 5 P6 - Cecilia's Computational Crisis
DMOPC
20p
8.2%
26
DMOPC '19 Contest 6 P0 - Trivial Math
DMOPC
3
64.7%
582
DMOPC '19 Contest 6 P1 - Grade 9 Math
DMOPC
7
10.5%
226
DMOPC '19 Contest 6 P2 - Grade 10 Math
DMOPC
7
34.6%
331
DMOPC '19 Contest 6 P3 - Grade 11 Math
DMOPC
10p
14.4%
119
DMOPC '19 Contest 6 P4 - Grade 12 Math
DMOPC
15p
23.5%
119
DMOPC '19 Contest 6 P5 - University Math
DMOPC
30p
6.6%
11
DMOPC '19 Contest 6 P6 - Math is Difficult
DMOPC
25p
16.1%
28
DMOPC '19 Contest 7 P0 - Contest Feedback
DMOPC
3
56.1%
363
DMOPC '19 Contest 7 P1 - Hydrocarbons
DMOPC
7
45.2%
261
DMOPC '19 Contest 7 P2 - Dinner Party
DMOPC
10
18.7%
143
DMOPC '19 Contest 7 P3 - Tree Pruning
DMOPC
12p
21.3%
137
DMOPC '19 Contest 7 P4 - Bob and Continued Fractions
DMOPC
20p
20.9%
108
DMOPC '19 Contest 7 P5 - Soriya's Programming Project
DMOPC
20p
17.9%
109
DMOPC '19 Contest 7 P6 - Bob Equilibrium
DMOPC
30p
19.8%
49
DMOPC '19 Contest 7 P7 - Fluid Dynamics
DMOPC
35p
15.5%
14
DMOPC '20 Contest 1 P1 - Victor Gets Quizzed
DMOPC
3
69.1%
519
DMOPC '20 Contest 1 P2 - Victor's Moral Dilemma
DMOPC
5
44.5%
508
DMOPC '20 Contest 1 P3 - Victor's Algorithm
DMOPC
7p
35.5%
277
DMOPC '20 Contest 1 P4 - Victor Makes Bank
DMOPC
17p
17.9%
147
DMOPC '20 Contest 1 P5 - Victor Takes Over Canada
DMOPC
17p
11.2%
88
DMOPC '20 Contest 1 P6 - Victor Identifies Software
DMOPC
25p
16.1%
32
DMOPC '20 Contest 2 P1 - Laugh Graphs
DMOPC
5
32.5%
374
DMOPC '20 Contest 2 P2 - Lousy Christmas Presents
DMOPC
5p
25.9%
415
DMOPC '20 Contest 2 P3 - Roadrollification
DMOPC
10p
32.7%
123
DMOPC '20 Contest 2 P4 - Hungry Pigeons
DMOPC
15p
11.0%
66
DMOPC '20 Contest 2 P5 - Majority Subarrays
DMOPC
25p
6.4%
20
DMOPC '20 Contest 2 P6 - Unfair Game
DMOPC
25p
16.0%
26
DMOPC '20 Contest 3 P1 - Present Checking
DMOPC
5p
50.0%
429
DMOPC '20 Contest 3 P2 - Bob and Parallel-Ks
DMOPC
7p
13.1%
160
DMOPC '20 Contest 3 P3 - A Ring of Buckets
DMOPC
12p
7.0%
60
DMOPC '20 Contest 3 P4 - Bob and Typography
DMOPC
15p
2.5%
9
DMOPC '20 Contest 3 P5 - Tower of Power
DMOPC
25p
6.9%
52
DMOPC '20 Contest 4 P1 - Missing Numbers
DMOPC
5p
14.3%
358
DMOPC '20 Contest 4 P2 - Beautiful Grids
DMOPC
7p
17.3%
153
DMOPC '20 Contest 4 P3 - Roving Roombas
DMOPC
12p
19.7%
180
DMOPC '20 Contest 4 P4 - Javelin Throwing
DMOPC
15p
19.8%
53
DMOPC '20 Contest 4 P5 - Cyclic Cypher
DMOPC
17p
10.0%
31
DMOPC '20 Contest 4 P6 - Petty Children
DMOPC
25p
20.8%
24
DMOPC '20 Contest 5 P1 - Home Row
DMOPC
3
34.9%
443
DMOPC '20 Contest 5 P2 - On The Clock
DMOPC
7p
18.2%
247
DMOPC '20 Contest 5 P3 - Bottom Row
DMOPC
15p
6.7%
41
DMOPC '20 Contest 5 P4 - Slacking Off
DMOPC
15p
13.5%
82
DMOPC '20 Contest 5 P5 - Slacking Off Again
DMOPC
20p
17.6%
32
DMOPC '20 Contest 5 P6 - Top Row
DMOPC
35p
3.1%
5
DMOPC '20 Contest 5 P6 - Top Row (Offline Version)
DMOPC
30p
22.2%
2
DMOPC '20 Contest 6 P1 - Tug of War
DMOPC
7p
14.4%
155
DMOPC '20 Contest 6 P2 - Interpretive Art
DMOPC
7p
11.6%
118
DMOPC '20 Contest 6 P3 - Bread Merchant
DMOPC
10p
18.9%
116
«
1
2
...
42
43
44
45
46
47
...
99
100
»