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Random
Hot problems
CCC '16 S4 - Combining Riceballs
Appleby Contest '19 P5 - Matrix Operation
Cheerio Contest 1 S2 - School Expansion
WC '96 P6 - Bases Multiplication
CCCHK '15 J4 - Where to build my house?
DMOPC '23 Contest 1 P1 - Peak Grid
EGOI '23 P4 - Bikes vs Cars
Problem
Category
Points
AC %
▴
Users
PIB '20 P4 - Ninjaclasher the Perfect Man
Uncategorized
25p
27.4%
6
James' Rectangles
Uncategorized
10p
33.7%
88
JOI '17 Final P4 - Commuter Pass
JOI
15
22.9%
43
JOI '17 Final P5 - Snake Escaping
JOI
25p
36.4%
14
ECOO '19 R3 P2 - Array Game
ECOO
12p
21.6%
5
Modulo Sort
Uncategorized
5p
37.4%
189
Another Contest 6 Problem 1 - A Plus B (Warmup)
ACC
0p
35.0%
531
Another Contest 6 Problem 2 - A Plus B (Easy)
ACC
0p
37.6%
647
Another Contest 6 Problem 3 - A Plus B (Medium)
ACC
0p
17.3%
231
Another Contest 6 Problem 4 - A Plus B (Hard)
ACC
0p
20.8%
204
JOI '19 Final P3 - Collecting Stamps 3
JOI
15
25.4%
39
Another Contest 6 Problem 0 - Another Warmup Problem
ACC
0
4.8%
8
South African Computer Olympiad 2008 Day 1 Problem 3 - Visiting Grandma
Uncategorized
15p
14.8%
76
QCC P5 - Vaccine Delivery
Uncategorized
12
16.2%
25
2-D Permutations
Uncategorized
10p
20.6%
158
DMOPC '19 Contest 7 P7 - Fluid Dynamics
DMOPC
35p
15.4%
15
Alphabet Score
Uncategorized
3p
48.7%
309
ROI '17 P4 - Travel To Metropolis
Uncategorized
25p
10.9%
6
JOI '18 Spring Camp Day 1 P1 - Construction of Highway
JOI
30p
34.0%
28
JOI '18 Spring Camp Day 1 P2 - Fences
JOI
30p
50.0%
1
JOI '18 Spring Camp Day 1 P3 - Tents
JOI
20p
66.0%
29
Teleportation Tangle
Uncategorized
7p
28.4%
31
Towers
Uncategorized
3p
53.3%
133
QCC P4 - Genetic Sequencing
Uncategorized
5p
54.4%
51
Strategic Arrays
Uncategorized
15p
32.6%
93
Exam Prep
Uncategorized
7p
24.6%
223
Grid 1.5
Uncategorized
10p
9.9%
45
Grid 3
Uncategorized
20
38.5%
16
ECOO '20 P1 - Music with Mimi
ECOO
3p
46.7%
195
ECOO '20 P3 - Captcha Fun
ECOO
7p
24.9%
103
ECOO '20 P4 - Ring
ECOO
12p
17.1%
78
ECOO '20 P2 - Online Shopping
ECOO
5p
46.4%
370
ICPC ECNA 2019 C - Cheese, If You Please
ICPC
25
30.4%
3
Willie's Subtree
Uncategorized
15
16.8%
9
Homie from Suomi
Uncategorized
5
53.2%
14
Fast LCA
Uncategorized
12
22.8%
48
Evan's Cube
Uncategorized
12p
27.1%
8
QCC P1 - Quarantine Games
Uncategorized
10
28.9%
37
Thog's Fortnite 2
Uncategorized
17p
15.2%
8
UCC Coding Competition '20 P1 - Snowstorm
Uncategorized
3
62.6%
157
UCC Coding Competition '20 P2 - Optimal Skiing
Uncategorized
3
54.0%
293
UCC Coding Competition '20 P3 - Farmer Bob
Uncategorized
5
34.8%
105
UCC Coding Competition '20 P4 - Bubble Tea
Uncategorized
7p
43.6%
223
UCC Coding Competition '20 P5 - Public Transport
Uncategorized
7p
53.8%
164
CCC '20 S2 - Escape Room (Hard)
CCC
15p
5.6%
55
Path Finder
Uncategorized
10p
15.3%
100
Tootsie Rolls
Classics
12p
22.2%
10
CCO '20 P1 - A Game with Grundy
CCO
10p
20.2%
215
CCO '20 P2 - Exercise Deadlines
CCO
15p
29.6%
291
CCO '20 P3 - Mountains and Valleys
CCO
35p
5.8%
25
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