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Hot problems
CCC '19 S2 - Pretty Average Primes
CCC '00 S1 - Slot Machines
Problem
Category
Points ▾
AC %
Users
CCO '02 P5 - Connect The Campus
CCO
12
31.0%
101
CCO '02 P6 - Pit Stop Strategy
CCO
12
52.7%
9
IOI '05 P2 - Mean Sequence
IOI
12p
20.9%
270
IOI '05 P4 - Birthday
IOI
12p
15.7%
141
COCI '09 Contest 1 #5 Genijalac
COCI
12p
39.9%
48
CEOI '19 Practice P3 - Tower Defense
CEOI
12p
13.9%
25
OCC '19 S5 - Partitioning
Olympiads School
12p
8.2%
12
DMOPC '19 Contest 1 P3 - Simple Math
DMOPC
12
17.8%
41
Baltic OI '06 P2 - Coin Collector
Baltic OI
12
19.0%
24
DMOPC '19 Contest 2 P3 - Selection
DMOPC
12
38.7%
163
Baltic OI '13 P5 - Tracks in the Snow
Baltic OI
12p
29.6%
84
DMOPC '19 Contest 3 P3 - Majority
DMOPC
12p
48.3%
268
Icebergs
Uncategorized
12p
20.4%
47
A Permutation Problem 2
Uncategorized
12
30.7%
20
A Sum Problem
Olympiads School
12p
13.0%
76
GlobeX Cup '19 S3 - Ninjaclasher's Wrath
Uncategorized
12p
12.2%
19
Athena on Zanzibar Island
Olympiads School
12p
6.7%
31
VPEX P3 - Coding Club
Uncategorized
12p
4.7%
25
DMOPC '19 Contest 4 P3 - Taking Cues
DMOPC
12p
20.0%
77
Art Academy V: Ruin
Uncategorized
12p
25.1%
46
Wesley's Anger Contest 3 Problem 4 - Canadian Construction Crew
WAC
12p
20.4%
81
Mock CCC '20 Contest 1 J5 - A Prime Problem
Mock CCC
12p
2.8%
20
Art Academy VI: The Last Stand
Uncategorized
12p
23.0%
27
CCC '20 J4 - Cyclic Shifts (Hard)
CCC
12p
3.8%
36
DMOPC '19 Contest 5 P3 - Captivating Construction Challenge
DMOPC
12p
44.9%
120
DMOPC '19 Contest 7 P3 - Tree Pruning
DMOPC
12p
21.3%
137
COCI '19 Contest 2 #3 Checker
COCI
12p
28.7%
26
CCC '20 S3 - Searching for Strings
CCC
12p
8.9%
841
CCC '20 S4 - Swapping Seats
CCC
12p
25.6%
489
ECOO '19 R3 P2 - Array Game
ECOO
12p
21.6%
5
COCI '19 Contest 4 #5 Nivelle
COCI
12p
44.4%
59
COCI '19 Contest 1 #5 Zoo
COCI
12p
31.5%
38
Wesley's Anger Contest 5 Problem 3 - Super Squirrel Sisters
WAC
12p
19.6%
113
Wesley's Anger Contest 4 Problem 3 - Squirrel Tag
WAC
12p
15.5%
73
QCC P5 - Vaccine Delivery
Uncategorized
12
16.2%
25
Art Academy VII: A Mysterious Object
Uncategorized
12p
41.3%
62
COCI '06 Contest 5 #4 Liga
COCI
12p
13.6%
43
ECOO '20 P4 - Ring
ECOO
12p
17.3%
79
Fast LCA
Uncategorized
12
22.8%
48
Evan's Cube
Uncategorized
12p
31.7%
8
Tootsie Rolls
Classics
12p
22.2%
10
CCO '04 P2 - Hockey Scores
CCO
12
20.6%
66
CCO '04 P4 - Return of Space Turtle
CCO
12
14.2%
46
COCI '15 Contest 7 #4 Otpor
COCI
12
69.2%
30
WC '18 Contest 1 S3 - Reach for the Top
Woburn Challenge
12p
11.7%
118
IOI '09 P2 - Hiring
IOI
12p
32.3%
251
NOI '97 P6 - Satellite Coverage
China NOI
12p
39.5%
27
NOI '14 P5 - Random Number Generator
China NOI
12p
24.3%
52
NOI '98 P5 - SERNET Simulation
China NOI
12p
8.5%
14
NOI '00 P2 - Program Parser
China NOI
12p
11.5%
10
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