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Hot problems
COCI '08 Contest 3 #6 Najkraci
DWITE '10 R3 #3 - Dominos Tiling
APIO '10 P1 - Commando
CCC '24 J4 - Troublesome Keys
CCC '24 S4 - Painting Roads
CCC '24 J3 - Bronze Count
Counting Subsequences
Problem
Category
Points
AC %
Users ▾
CCO '02 P3 - Return To Blind Man's Bluff
CCO
12
12.2%
16
Back To School '19: FFT Fun
Seasonal
20p
14.6%
16
DMOPC '19 Contest 4 P6 - little_prince's Specialty Tea House
DMOPC
25p
5.8%
16
GlobeX Cup '19 S5 - Alien Navigation
Uncategorized
20p
7.4%
16
JSB '19 - P2
CTF
7
26.7%
16
DMOPC '19 Contest 4 P4 - Math Class
DMOPC
15p
3.4%
16
PIB '20 P7 - Karnaugh Maps
Uncategorized
15p
8.5%
16
Grid 3
Uncategorized
20
38.5%
16
WC '18 Contest 1 S4 - Bad Influence
Woburn Challenge
15p
12.4%
16
NOI '11 P5 - NOI Carnival
China NOI
25p
19.5%
16
IOI '99 P5 - Flatten
IOI
15p
21.8%
16
Kevin Needs Help
Uncategorized
20
29.4%
16
NOI '19 P5 - Landlords
China NOI
25p
22.6%
16
WC '01 P5 - The Man With The Golden Eye
Woburn Challenge
12
16.1%
16
WC '02 Suicidal P1 - Dark Lord
Woburn Challenge
12
12.7%
16
Baltic OI '20 P3 - Joker
Baltic OI
25p
14.9%
16
What a Niche
Uncategorized
10p
13.3%
16
COI '09 #2 Kolo
COCI
20p
17.7%
16
ICPC SWERC 2017 J - Frosting on the Cake
ICPC
7
41.7%
16
World Tour Contest Problem 1 — Solar Eclipse
Seasonal
5
1.6%
16
COCI '10 Contest 4 #4 Prosjek
COCI
7p
19.8%
16
COCI '13 Contest 3 #5 Parovi
COCI
12p
46.7%
16
COCI '17 Contest 3 #4 Portal
COCI
12p
53.4%
16
COCI '12 Contest 6 #4 Burek
COCI
12p
27.7%
16
COCI '17 Contest 5 #4 Karte
COCI
15p
46.8%
16
ICPC NWERC 2011 A - Binomial Coefficients
ICPC
10
24.7%
16
Dynamic Sum
Uncategorized
15
14.6%
16
String Finding - Hacking
Uncategorized
10
6.1%
16
COCI '21 Contest 2 #3 Hiperkocka
COCI
20p
23.3%
16
DMOPC '21 Contest 8 P6 - Castle Building
DMOPC
40p
8.9%
16
Baltic OI '14 P5 - Portals
Baltic OI
15p
23.4%
16
Baltic OI '02 P1 - Speed Limits
Baltic OI
12p
26.3%
16
Bit Combinations
Uncategorized
7
33.3%
16
IOI '12 P6 - Jousting Tournament
IOI
17p
16.4%
16
Waterloo 2022 Fall C - Squaring the Triangle
Waterloo Local
17
41.2%
16
EGOI '22 P3 - Social Engineering
EGOI
15p
7.1%
16
COCI '22 Contest 1 #3 Berilij
COCI
17p
16.4%
16
NOIP '08 P3 - Message Passing
China NOI
15p
42.9%
16
Cheerio Contest 3 P5 - Train Network
Uncategorized
20p
3.8%
16
Google Code Jam '22 Qualification Round Problem B - 3D Printing
Google Code Jam
5p
62.5%
16
ETSR '23 Onsite Round 1 Problem 1 - Arithmetic
Uncategorized
20p
4.3%
16
Amplitude Hackathon '23 Problem 4 - Frequency Queries
Uncategorized
7p
15.3%
16
WOSS Dual Olympiad 2023 S3: Flying
Uncategorized
15p
23.3%
16
COCI '23 Contest 2 #3 Dizalo
COCI
17p
19.1%
16
MEC '16 P6 - Instruments of the Ghostwriters
Seasonal
10p
11.3%
15
ECOO '16 R3 P2 - Target Practice
ECOO
10p
22.2%
15
IOI '16 P3 - Shortcut
IOI
40p
9.0%
15
ICPC ECNA 2005 G - Swamp Things
ICPC
7
22.6%
15
ECOO '13 R3 P1 - Irregular Expressions
ECOO
5p
20.5%
15
DMOPC '17 Contest 3 P6 - Mimi and Scarf
DMOPC
25p
7.3%
15
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