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Hot problems
Knapsack 4
CCC '00 S1 - Slot Machines
ECOO '17 R3 P1 - Baker Brie
A Game
DMOPC '19 Contest 7 P5 - Soriya's Programming Project
DMOPC '21 Contest 9 P5 - Chika Circle
CCC '11 S1 - English or French?
Problem
Category
Points
AC % ▴
Users
Waterloo 2023 Winter D - Link-Cut Tree
Waterloo Local
10
69.6%
14
COCI '06 Contest 2 #1 R2
COCI
3
69.9%
1113
COCI '09 Contest 4 #1 Autori
COCI
3
70.0%
412
DWITE '11 R3 #3 - Combo Discounts
DWITE
5
70.0%
7
Baltic OI '12 P4 - Fireworks in RightAngleles
Baltic OI
25p
70.0%
5
CCC '24 S1 - Hat Circle
CCC
3p
70.0%
469
Continuous Time Finance
Uncategorized
0p
70.2%
28
DWITE '08 R3 #1 - ASCII Rhombus
DWITE
5
70.3%
47
GFSS Christmas Challenge P1 - Arithmetic Operators
GFSSOC
3
70.8%
168
DMOJ Capture The Flag '20 C3 - Small AES
CTF
7
71.0%
21
DWITE '07 R5 #3 - Parity bit
DWITE
5
71.0%
102
JOI '18 Spring Camp Day 1 P3 - Tents
JOI
20p
71.1%
28
DWITE '10 R4 #5 - Sleepwalking Probabilities
DWITE
5
71.4%
11
Google Code Jam '08 Qualification Round Problem B - Saving the Universe
Google Code Jam
5p
71.4%
4
Google Code Jam '12 Round 1A Problem A - Password Problem
Google Code Jam
5p
71.4%
2
CPC '21 Contest 1 P0 - AQT and Alphabet
Uncategorized
3
71.6%
370
Another Contest 4 Problem 3 - An Isosceles Right Triangle
ACC
0
71.7%
191
Waterloo 2017 Winter A - Vera and Outfits
Waterloo Local
3
71.8%
519
MMM '14 H - Lift Control
Uncategorized
25p
71.8%
3
DWITE '08 R4 #1 - Four player Pong with no players
DWITE
7
71.9%
58
CTU Open Contest 2018 - Horsemeet
ICPC
10
71.9%
13
NOI '99 P5 - Optimally Connected Subset
China NOI
15p
72.0%
18
Wesley's Anger Contest Reject 2 - 🥕suba
WAC
3
72.1%
156
WC '18 Contest 3 J3 - R
Woburn Challenge
3p
72.2%
89
COCI '13 Contest 5 #2 Obilazak
COCI
7p
72.3%
127
OTHS Coding Competition 1 (Mock CCC) J1 - Math Assistance
Uncategorized
3
72.6%
350
CCCJQR P1
Seasonal
0
72.7%
638
SAC '22 Code Challenge 5 Junior P2 - Badminton Scoring
SAC Coding Challenge
3
72.7%
287
DWITE '09 R3 #3 - Binary Test Strings 2
DWITE
5
73.2%
27
Another Contest 4 Problem 2 - The Deutsch-Jozsa Algorithm
ACC
0
73.5%
261
SAC '22 Code Challenge 5 P2 - Querying Extensions
SAC Coding Challenge
5p
73.5%
281
Google Code Jam '21 Qualification Round Problem A - Reversort
Google Code Jam
3p
73.9%
14
COCI '21 Contest 2 #1 Kaučuk
COCI
5p
73.9%
91
COCI '16 Contest 4 #2 Kartomat
COCI
5p
74.2%
138
COCI '15 Contest 4 #3 Deathstar
COCI
7p
74.3%
286
SAC '22 Code Challenge 3 P1 - Hair Hazards
SAC Coding Challenge
3
74.7%
513
CTU Open Contest 2017 - Chessboard Dancing
ICPC
7
75.0%
6
Google Code Jam '10 Round 1A Problem C - Number Game
Google Code Jam
20p
75.0%
3
Google Code Jam '22 Round 1A Problem C - Weightlifting
Google Code Jam
20p
75.0%
4
Waterloo 2005 Winter E - Traditional BINGO
Waterloo Local
5
75.0%
3
COCI '16 Contest 7 #1 Baza
COCI
5p
75.5%
34
WC '01 P1 - The Rock
Woburn Challenge
7
77.2%
24
CCC '24 J1 - Conveyor Belt Sushi
CCC
3p
77.6%
561
DWITE '08 R3 #5 - Now in 3D
DWITE
7
78.7%
26
Another Contest 6 Problem 9 - Obligatory Wood IV Problem
ACC
0p
100.0%
1606
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