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Hot problems
CCC '16 S4 - Combining Riceballs
CCC '24 S2 - Heavy-Light Composition
EGOI '23 P4 - Bikes vs Cars
Vending Machine
DMOPC '19 Contest 2 P4 - A Greedy Problem
CCC '05 S4 - Pyramid Message Scheme
CCC '20 S4 - Swapping Seats
Problem
Category
Points
AC % ▾
Users
DWITE '07 R3 #5 - Portals
DWITE
7
48.9%
35
DMOPC '19 Contest 2 P2 - Squares
DMOPC
7
48.9%
409
DMOPC '21 Contest 6 P1 - Bigger Big Integer
DMOPC
3p
48.9%
500
WC '18 Contest 4 S1 - World of StarCraft
Woburn Challenge
10p
48.8%
248
Pick It
Uncategorized
15
48.8%
367
WC '17 Contest 4 J4 - Efficiency
Woburn Challenge
5
48.8%
68
COCI '09 Contest 3 #4 Razgovori
COCI
10p
48.8%
111
Alphabet Score
Uncategorized
3p
48.7%
309
Canada Day Contest 2021 - 0-1
Seasonal
20p
48.7%
61
A Plus B
Uncategorized
3p
48.7%
8037
WC '15 Contest 1 S1 - Woburn Workload
Woburn Challenge
7
48.7%
128
UCRPC F21 C - Maths of Glory
ICPC
5
48.6%
68
DMOPC '14 Contest 3 P1 - Not Enough Users!
DMOPC
3p
48.6%
859
Waterloo 2017 Fall B - Biology
Waterloo Local
5p
48.6%
11
BlueBook - Triangle
BlueBook
3
48.6%
320
IOI '09 Practice Task 3 - Museum
IOI
15p
48.5%
72
Inaho IV
Uncategorized
5p
48.5%
158
CCO '96 P3 - Quadtrees
CCO
15
48.4%
84
ICPC ECNA 2016 G - That's One Hanoi-ed Teacher
ICPC
15
48.4%
14
COCI '15 Contest 2 #1 Marko
COCI
5
48.3%
367
COCI '07 Contest 4 #3 Lektira
COCI
5
48.3%
203
DMOPC '15 Contest 1 P1 - Itami and Manga
DMOPC
3p
48.3%
681
Mock CCC '20 Contest 1 J1 - A Rage Tree Problem
Mock CCC
3p
48.3%
823
Bob Hates Triangles
Uncategorized
7
48.3%
84
Mock CCC '22 Contest 2 J1 - Opening Ceremony
Mock CCC
3
48.3%
707
DMOPC '19 Contest 3 P3 - Majority
DMOPC
12p
48.3%
268
SAC '22 Code Challenge 1 P2 - That Circle
SAC Coding Challenge
3
48.3%
247
COCI '23 Contest 1 #1 Sudoku
COCI
5p
48.3%
65
DMOPC '19 Contest 4 P0 - Yikes
DMOPC
3p
48.3%
425
DWITE '09 R6 #1 - ROT13 Encryption
DWITE
3
48.2%
96
Literature Club
Uncategorized
5p
48.2%
45
COCI '08 Contest 5 #1 Ljesnjak
COCI
5
48.2%
71
CCC '01 J1 - Dressing Up
CCC
3
48.2%
2874
WC '18 Contest 4 J1 - A Fistful of Quarters
Woburn Challenge
3p
48.1%
130
COCI '12 Contest 2 #6 Inspektor
COCI
25p
48.0%
5
COCI '11 Contest 5 #3 Dna
COCI
10p
48.0%
51
NOIP '07 P1 - Counting Numbers
China NOI
3p
48.0%
55
Fast Bit Counting
Uncategorized
3p
48.0%
278
ICPC ECNA 2016 H - Vin Diagrams
ICPC
15
47.9%
13
DWITE '10 R4 #1 - Future Printer
DWITE
3
47.9%
33
Segment Tree Practice 3
Uncategorized
15
47.8%
35
COCI '07 Contest 1 #2 PEG
COCI
5
47.8%
159
COCI '10 Contest 3 #5 Diferencija
COCI
12p
47.8%
130
Educational DP Contest AtCoder N - Slimes
Uncategorized
12
47.8%
407
COCI '22 Contest 2 #1 Tramvaji
COCI
5p
47.7%
84
WC '16 Contest 1 J1 - A Spooky Season
Woburn Challenge
3
47.7%
4625
Emoji Search
Uncategorized
5
47.7%
112
April Fools' Day Contest 1 P3 - Author
Uncategorized
0
47.7%
189
CCC '21 S1 - Crazy Fencing
CCC
5p
47.7%
2559
COCI '06 Contest 4 #5 Jogurt
COCI
12p
47.7%
80
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