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Hot problems
CCC '24 J4 - Troublesome Keys
CCC '24 S2 - Heavy-Light Composition
CCC '19 J3 - Cold Compress
COCI '22 Contest 4 #1 7Krokods
CCC '24 J5 - Harvest Waterloo
CCC '08 S4 - Twenty-four
CCC '24 S3 - Swipe
Problem
Category
Points
AC %
Users ▾
COCI '09 Contest 6 #4 Xor
COCI
15p
24.2%
28
Cosmic Inflation
Uncategorized
7
50.0%
28
COCI '16 Contest 5 #4 Ronald
COCI
12p
43.4%
28
COCI '12 Contest 6 #5 Jedan
COCI
15
36.4%
28
COCI '17 Contest 5 #3 Birokracija
COCI
12p
52.3%
28
COI '20 #1 Autobahn
COCI
15p
11.7%
28
DMOPC '20 Contest 7 P3 - Senpai and Art
DMOPC
20p
10.7%
28
CCO '22 P4 - Bi-ing Lottery Treekets
CCO
20p
22.4%
28
A Math Contest P13 - Ways
Uncategorized
17
18.9%
28
Baltic OI '01 P5 - Mars Maps
Baltic OI
15p
13.6%
28
DMOPC '22 Contest 2 P4 - Falling Leaves
DMOPC
20p
24.3%
28
COCI '22 Contest 1 #4 Iksevi
COCI
12p
28.6%
28
DMOPC '22 Contest 3 P5 - Alice Rebalancing
DMOPC
20p
7.3%
28
NOIP '04 P3 - Chorus Formation
China NOI
10p
29.6%
28
MWC '15 #5 P2: WildCard
MWC
5p
17.7%
27
COCI '15 Contest 2 #3 Artur
COCI
10p
9.3%
27
COCI '16 Contest 1 #5 Kralj
COCI
15p
29.2%
27
Back To School '17: Big Integer
Seasonal
35p
5.9%
27
DWITE '09 R3 #3 - Binary Test Strings 2
DWITE
5
73.2%
27
COCI '17 Contest 1 #2 Tetris
COCI
5
38.0%
27
COCI '18 Contest 2 #3 Deblo
COCI
15p
35.4%
27
Bubble Cup V11 A Splitting Money
Bubble Cup
7
24.0%
27
Triway Cup '19 Summer H - Time Traveller Imaxblue
Seasonal
30
28.5%
27
JSB '19 - P1
CTF
5
8.4%
27
Art Academy VI: The Last Stand
Uncategorized
12p
23.0%
27
JOI '18 Spring Camp Day 1 P1 - Construction of Highway
JOI
30p
33.5%
27
ACM U of T Tryouts C2 C - Homemade Asteroids
ICPC
10
19.5%
27
NOI '97 P6 - Satellite Coverage
China NOI
12p
39.5%
27
Bulgarian OI '09 P5 - Special Sequence
Bulgarian OI
30p
14.0%
27
COCI '09 Contest 4 #5 Kaboom
COCI
12
40.2%
27
ACSL '09 Practice P7 - Cube
Uncategorized
15
16.1%
27
CCO '05 P6 - Windows
CCO
30p
14.0%
27
WC '99 P7 - The Rock
Woburn Challenge
15
23.5%
27
Baltic OI '17 P5 - Plus Minus
Baltic OI
15p
38.5%
27
Bus Stops
Uncategorized
10
24.0%
27
COCI '11 Contest 1 #2 Matrix
COCI
7p
32.2%
27
COCI '10 Contest 5 #4 Honi
COCI
10p
35.0%
27
COCI '17 Contest 6 #1 Davor
COCI
5
52.8%
27
COCI '20 Contest 5 #3 Magenta
COCI
12p
9.7%
27
Monkey Cards
Uncategorized
12
30.4%
27
Baltic OI '07 P6 - Sequence
Baltic OI
12p
27.2%
27
CCO '22 P3 - Double Attendance
CCO
25p
7.4%
27
DMOPC '21 Contest 10 P6 - Median Replace
DMOPC
25p
18.9%
27
CEOI '22 P5 - Measures
CEOI
20p
9.2%
27
Mock CCC '23 1 S3 - Richard The Penguin
Mock CCC
10p
5.9%
27
Amplitude Hackathon '23 Practice Problem 5 - What is Spenser's Last Name?
Uncategorized
0p
42.4%
27
COCI '23 Contest 3 #3 Milano C.le
COCI
10p
35.8%
27
STNBD P5 - Fianna Ray Ordesia
Uncategorized
10p
12.0%
26
New Year's '15 P6 - Tiles
Seasonal
20p
23.8%
26
UTS Open '15 #2 - Secret Code
Uncategorized
10p
17.1%
26
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