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Hot problems
CCC '19 S2 - Pretty Average Primes
Problem
Category
Points
AC %
Users ▴
ECOO '18 R3 P3 - Currency Exchange
ECOO
10p
8.1%
13
APIO '13 P2 - Toll
APIO
35p
20.6%
13
CTU Open Contest 2018 - Horsemeet
ICPC
10
71.9%
13
IOI '08 P4 - Teleporters
IOI
25p
30.2%
13
ECOO '19 R2 P3 - Ribbon
ECOO
15p
19.8%
13
Mock CCO '19 Contest 1 Problem 4 - A Chemistry Problem
Mock CCO
15p
14.9%
13
CEOI '19 P3 - Cubeword
CEOI
20p
40.5%
13
APIO '17 P1 - Land of the Rainbow Gold
APIO
30p
16.3%
13
GlobeX Cup '19 S4 - Ninjaclasher's Wrath 2
Uncategorized
25p
9.7%
13
Wesley's Anger Contest 1 Problem 4 (Hard Version) - A Red-Black Tree Problem
WAC
17
23.4%
13
Wesley's Anger Contest 3 Bonus Problem - Game of Death
WAC
7p
38.1%
13
COCI '19 Contest 6 #4 Skandi
COCI
17p
51.0%
13
WC '99 Suicidal P5 - Star Wars
Woburn Challenge
15
37.7%
13
WC '18 Contest 3 S3 - Counterpicking
Woburn Challenge
15p
7.8%
13
WC '15 Contest 2 S4 - The Force Awakens (Senior)
Woburn Challenge
30p
6.8%
13
WC '15 Finals S3 - Driving Range
Woburn Challenge
15p
19.3%
13
WC '02 P6 - Obstacles Galore
Woburn Challenge
10
15.5%
13
DMOJ Capture The Flag '20 R4 - Python Cycles
CTF
12
41.9%
13
Lego
Uncategorized
15p
27.3%
13
Substring Scoring
Uncategorized
20p
20.5%
13
Wesley's Anger Contest Reject 3 - Christmas Carols
WAC
25p
14.4%
13
Riolku's Mock CCC S5 - Keen Keener Multiset
Mock CCC
25p
6.6%
13
COCI '12 Contest 4 #3 Voyager
COCI
7p
29.4%
13
COCI '20 Contest 4 #3 Hop
COCI
25p
22.1%
13
COCI '17 Contest 7 #3 Go
COCI
15p
22.7%
13
JOI '20 Spring Camp Day 4 P1 - Capital City
JOI
20
47.1%
13
Another Contest 6 Problem 12 - A Pretty Standard Problem Involving Judge Kirito
ACC
0p
6.9%
13
CCO '21 P6 - Loop Town
CCO
50p
4.7%
13
Moses Needs Help
Uncategorized
12p
16.8%
13
DMOPC '20 Contest 7 P6 - Maou and Division
DMOPC
25p
11.2%
13
NOI '15 P5 - Cocktail Party
China NOI
25p
42.1%
13
ICPC NWERC 2015 A - Assigning Workstations
ICPC
10
31.4%
13
MALD Contest 1 P6 - Scratch Cat and Painting
Uncategorized
17p
14.6%
13
COI '15 #2 Palinilap
COCI
25p
20.3%
13
NOIP '99 P3 - Traveller's Budget
China NOI
12p
11.4%
13
IOI '18 P4 - Mechanical Doll
IOI
20p
22.6%
13
JOI '21 Open P2 - Financial Report
JOI
25p
34.0%
13
Baltic OI '02 P2 - Tennis Club
Baltic OI
12p
34.0%
13
JOI '19 Open P1 - Triple Jump
JOI
30p
21.0%
13
NOIP '18 Junior P2 - The Big Battle
China NOI
7p
33.3%
13
Max's Anger Contest Series 1 P4 - Greedily Gamboling (Hard Version)
Seasonal
15p
28.7%
13
Mock CCC '23 2 S3 - Richard The Penguin
Mock CCC
10p
3.9%
13
Waterloo 2023 Winter B - Laser Trap
Waterloo Local
12
22.2%
13
Waterloo 2023 Winter C - Sandpile on Clique
Waterloo Local
10
31.0%
13
Google Code Jam '22 Qualification Round Problem A - Punched Cards
Google Code Jam
3p
43.6%
13
Waterloo 2016 Fall D - Treasure Hunt
Waterloo Local
5
36.8%
13
ETSR '23 Onsite Round 2 Problem 2 - Exponents
Uncategorized
25p
4.1%
13
EGOI '23 P7 - Sopsug
EGOI
17p
8.2%
13
IOI '23 P2 - Longest Trip
IOI
25p
3.1%
13
MWC '15 #8 P3: Draw Down
MWC
12p
15.8%
14
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