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Hot problems
DWITE '10 R3 #3 - Dominos Tiling
COCI '08 Contest 3 #6 Najkraci
WC '01 P3 - Back to the Future
A Math Contest P5 - Good Arrays
GFSSOC '15 Winter S1 - OR-deal
Counting Subsequences
CCC '11 S1 - English or French?
Problem
Category
Points
AC %
Users ▴
COI '14 #4 Sir
COCI
25p
27.9%
9
BPC 1 S4 - Binary Matrices
Uncategorized
25p
12.2%
9
Adaptive Mechanized Calcium Chlorohypochlorite
Uncategorized
25
15.2%
9
Baltic OI '11 P7 - Polygon
Baltic OI
17p
35.7%
9
DMOPC '22 Contest 1 P6 - Linear Swap
DMOPC
30p
7.8%
9
JOI '21 Open P1 - Crossing
JOI
20p
42.9%
9
JOI '21 Spring Camp Day 4 P1 - Event Hopping 2
JOI
30p
63.2%
9
MCIPC Contest 2 P6 - Block Tower
Uncategorized
12p
11.6%
9
Lyndon's Golf Contest 1 P6 - Alphanumeric Perl
Uncategorized
0p
9.3%
9
NOIP '04 P4 - Bugs Eating Computation
China NOI
15p
5.5%
9
Google Code Jam '21 Qualification Round Problem C - Reversort Engineering
Google Code Jam
7p
27.5%
9
Waterloo 2016 Fall C - Wizard of Odds
Waterloo Local
5
34.3%
9
NOI '17 P2 - Queue
China NOI
20p
45.3%
9
Capture The Flag 2
Uncategorized
12
56.3%
9
Cryptic Tile Forge
Uncategorized
0
24.3%
9
Guessing Game
Uncategorized
5p
37.6%
9
Phantom's Python Challenge
Uncategorized
40p
0.8%
10
CCO '07 P5 - Particle Catcher
CCO
30p
16.3%
10
CCO Preparation Test 1 P1 - Double Cross
Mock CCO
20p
12.1%
10
ECOO '15 R2 P2 - So So
ECOO
12p
17.2%
10
ECOO '16 R3 P1 - Nerd Poker
ECOO
7p
12.2%
10
COCI '15 Contest 2 #6 Država
COCI
25
24.2%
10
ICPC NAQ 2016 B - Arcade!
ICPC
15
24.8%
10
TLE '16 Contest 7 P2 - Judging
TLE
15p
14.2%
10
TLE '16 Contest 7 P5 - Shortest Path Faster Algorithm
TLE
20p
2.8%
10
Google Kickstart '17 Round C Problem C - Magical Thinking
Google Kick Start
10p
20.0%
10
DWITE '07 R4 #3 - Don't follow my links
DWITE
5
54.9%
10
DWITE '10 R3 #5 - E-Searching
DWITE
7
42.4%
10
DWITE '12 R1 #5 - Haunted House
DWITE
10
44.4%
10
DWITE '11 R2 #3 - Anonymous Shopping
DWITE
5
40.0%
10
TLE '17 Contest 2 P5 - Crew Selection Test
TLE
25p
7.8%
10
DMOPC '17 Contest 4 P6 - Best Girl
DMOPC
25p
15.4%
10
Heap Dijkstra Revisited
Data Structure Tests
10
14.3%
10
CTU Open Contest 2017 - Shooting Gallery
ICPC
10
17.0%
10
ECOO '18 R2 P4 - Three Squares
ECOO
15p
35.1%
10
IOI '18 P6 - Meetings
IOI
35p
12.0%
10
Inaho VIII
Uncategorized
20
36.6%
10
DMOPC '18 Contest 4 P6 - Dr. Henri and Resistor Chains
DMOPC
20p
4.2%
10
Valentine's Day '19 S5 - A Top Tree Problem
Uncategorized
25p
9.7%
10
CTU Open Contest 2018 - Rullete
ICPC
10
19.4%
10
COCI '18 Contest 1 #5 Teoretičar
COCI
35p
31.7%
10
COCI '18 Contest 6 #2 Konj
COCI
7p
61.1%
10
CPC '19 Contest 1 P6 - Maintaining Some Coins
Uncategorized
20p
1.9%
10
CCO '99 P6 - Fast Food
CCO
15
34.4%
10
DMPG '19 G4 - Carpet Cleaning Chore
DMOPC
12p
13.0%
10
Wesley's Anger Contest 2 Problem 5 - Oober Treats
WAC
25
21.6%
10
Bohemian Rhaksody
Uncategorized
45p
5.0%
10
Wesley++
Seasonal
15p
15.2%
10
COCI '19 Contest 2 #1 ACM
COCI
5p
52.4%
10
Tootsie Rolls
Classics
12p
22.2%
10
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