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Hot problems
CCC '12 S3 - Absolutely Acidic
CCC '21 J3 - Secret Instructions
CCC '24 S2 - Heavy-Light Composition
DMOPC '20 Contest 4 P1 - Missing Numbers
COCI '06 Regional #3 Firefly
ECOO '19 R1 P1 - Free Shirts
ACSL '09 Practice P4 - Rank
Problem
Category
Points ▴
AC %
Users
CCC '20 S5 - Josh's Double Bacon Deluxe
CCC
17p
29.6%
257
COCI '19 Contest 4 #4 Klasika
COCI
17p
12.9%
54
COCI '19 Contest 6 #4 Skandi
COCI
17p
51.0%
13
IOI '11 P4 - Crocodile's Underground City
IOI
17p
28.5%
86
Thog's Fortnite 2
Uncategorized
17p
15.2%
8
DMOPC '20 Contest 1 P5 - Victor Takes Over Canada
DMOPC
17p
11.3%
92
COCI '09 Contest 3 #5 Patuljci
COCI
17p
21.9%
109
NOI '00 P3 - Mystery of the Lost City
China NOI
17p
40.0%
9
Good Debugging
Uncategorized
17
26.4%
129
Good Travels
Uncategorized
17
20.6%
70
NOI '02 P3 - The Greedy Kuzuryū
China NOI
17p
25.6%
57
NOI '10 P1 - Energy Harvesting
China NOI
17p
29.1%
69
CCO '08 P3 - Mobile
CCO
17p
31.3%
46
King Graff's Tolls
Uncategorized
17p
27.6%
55
MMM '14 C - Pie Shop
Uncategorized
17p
16.3%
28
WC '15 Contest 4 S3 - Coded Paper
Woburn Challenge
17p
20.4%
20
WC '17 Contest 2 S4 - One Does Not Simply Walk Into Mordor
Woburn Challenge
17p
16.5%
10
WC '17 Finals S4 - Ultimatum
Woburn Challenge
17p
9.7%
11
WC '15 Contest 1 S3 - Contest Sites
Woburn Challenge
17p
9.9%
56
WC '99 Suicidal P1 - World
Woburn Challenge
17p
16.6%
25
WC '16 Contest 2 S4 - Diplomacy
Woburn Challenge
17p
13.9%
18
WC '17 Contest 1 S4 - Change
Woburn Challenge
17p
10.7%
15
WC '17 Contest 4 S4 - Alpha Nerd
Woburn Challenge
17p
18.0%
8
Fast LCA (Hard)
Uncategorized
17
8.7%
7
Baltic OI '19 P5 - Necklace
Baltic OI
17p
11.7%
19
Baltic OI '17 P3 - Railway
Baltic OI
17p
34.4%
75
Wesley's Anger Contest 5 Problem 4 - Prison Escape
WAC
17p
17.2%
44
IOI '06 P2 - Pyramid
IOI
17p
22.5%
217
IOI '12 P6 - Jousting Tournament (Standard I/O)
IOI
17p
16.7%
12
Baltic OI '05 P5 - Bus Trip
Baltic OI
17
51.9%
20
IOI '11 P2 - Race (Standard I/O)
IOI
17p
15.2%
529
IOI '11 P4 - Crocodile's Underground City (Standard I/O)
IOI
17p
19.1%
374
ICPC NEERC Northern Subregional 2007 E - Elevator
ICPC
17
16.4%
74
ICPC SWERC 2017 C - Macarons
ICPC
17
28.6%
2
ICPC SWERC 2017 G - Cordon Bleu
ICPC
17
50.0%
5
IOI '13 P6 - Game (Standard I/O)
IOI
17p
8.4%
150
COCI '20 Contest 1 #4 Papričice
COCI
17p
23.1%
46
COCI '20 Contest 1 #5 Tenis
COCI
17p
18.8%
7
COCI '20 Contest 2 #3 Euklid
COCI
17p
19.6%
24
COCI '20 Contest 3 #3 Sateliti
COCI
17p
20.0%
36
DMOPC '20 Contest 4 P5 - Cyclic Cypher
DMOPC
17p
10.0%
31
COCI '16 Contest 4 #5 Rima
COCI
17p
12.9%
15
COCI '16 Contest 5 #5 Poklon
COCI
17p
40.4%
46
COCI '16 Contest 7 #5 Paralelogrami
COCI
17p
4.0%
2
COCI '13 Contest 3 #6 Odašiljači
COCI
17p
25.0%
1
COCI '13 Contest 5 #6 Ladice
COCI
17p
35.3%
34
COCI '13 Contest 6 #6 Graškrižja
COCI
17p
11.0%
12
Segment Tree Practice 4
Uncategorized
17
45.1%
20
DMOPC '20 Contest 6 P5 - Jennifer's Math Mystery
DMOPC
17p
11.8%
24
COCI '17 Contest 3 #5 Dojave
COCI
17p
22.2%
9
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