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Hot problems
IOI '94 P1 - The Triangle
IOI '14 P3 - Game
CCC '24 S4 - Painting Roads
CCC '11 S1 - English or French?
DMOPC '20 Contest 1 P3 - Victor's Algorithm
CCC '24 J3 - Bronze Count
CCC '24 J4 - Troublesome Keys
Problem
Category
Points
AC % ▾
Users
New Year's '17 P1 - Mr. N and Presents
Seasonal
7p
18.5%
273
Mock CCC '19 Contest 1 J3 - Pusheen Eats Tuna Sashimi and Tuna Nigiri
Mock CCC
3p
18.4%
338
IOI '00 P1 - Palindrome
IOI
10p
18.4%
815
Fixing Shirts
Uncategorized
15
18.4%
24
Mynerva
Olympiads School
7p
18.4%
79
Valentine's Day '19 J4 - Flowers
Uncategorized
5
18.4%
67
DMPG '15 G2 - 1-String B2-VPG Representation of Planar Graphs
DMOPC
15p
18.4%
30
Inaho III
Uncategorized
17p
18.4%
31
IOI '13 P1 - Dreaming (Standard I/O)
IOI
15p
18.4%
517
RGPC '18 P4 - Higgs
Uncategorized
15p
18.4%
40
SAC '22 Code Challenge 4 Junior P4 - Obligatory Permutation Problem
SAC Coding Challenge
7p
18.4%
83
Mock CCC '15 S1 - Dupvoting
Mock CCC
5p
18.4%
151
Mock CCC '15 S3 - The Tachyon Trap
Mock CCC
12p
18.4%
65
Sales
Uncategorized
20p
18.4%
64
Mock CCC '22 Contest 2 J4 - Hockey Bracket
Mock CCC
7p
18.4%
194
COCI '15 Contest 4 #5 Galaksija
COCI
15p
18.3%
113
COCI '23 Contest 2 #3 Dizalo
COCI
17p
18.3%
15
An Animal Contest 3 P5 - Monkey Canoe
AAC
12p
18.3%
133
Mock CCO '18 Contest 2 Problem 6 - Victor's Cubes
Mock CCO
20p
18.3%
9
DMOPC '18 Contest 2 P2 - Booster Cushions
DMOPC
5p
18.3%
188
Waterloo 2022 Fall E - Water Flow
Waterloo Local
12
18.3%
7
DMOPC '18 Contest 5 P3 - A Familiar Problem
DMOPC
7p
18.3%
425
CCO '08 P5 - Candy
CCO
7p
18.3%
235
CEOI '17 P6 - Chase
CEOI
30p
18.3%
21
CCOQR '16 - Through A Maze Darkly
CCC
20p
18.3%
103
IOI '13 P5 - Robots
IOI
20p
18.3%
90
Mock CCC '21 S5 - Clique and Independent Set
Mock CCC
25p
18.3%
11
COCI '10 Contest 4 #4 Prosjek
COCI
7p
18.3%
14
Factorial Calculator
TLE
7p
18.3%
79
CCC '11 S5 - Switch
CCC
12p
18.3%
411
DMPG '15 B4 - Maximum Product
DMOPC
7p
18.3%
321
Mock CCC '15 J4 - Vox in Box
Mock CCC
7p
18.3%
78
COCI '18 Contest 5 #4 Parametriziran
COCI
15p
18.3%
34
CCC '22 S3 - Good Samples
CCC
10p
18.3%
651
NOI '15 P1 - Automated Program Analyzer
China NOI
12p
18.3%
95
Mock CCC '18 Contest 5 S4 - Sparse Binary String Counting
Mock CCC
10p
18.3%
92
IOI '11 P3 - Rice Hub
IOI
15p
18.2%
125
DMOPC '17 Contest 3 P2 - Towers of Hanoi
DMOPC
7p
18.2%
82
APIO '14 P1 - Palindromes
APIO
25p
18.2%
58
DMOPC '20 Contest 5 P2 - On The Clock
DMOPC
7p
18.2%
247
CCC '24 S3 - Swipe
CCC
10p
18.2%
160
Bubble Cup V8 B Bribes
Bubble Cup
17
18.2%
53
CCC '10 S3 - Firehose
CCC
15p
18.2%
644
IOI '10 P6 - Traffic Congestion
IOI
10p
18.2%
94
The Cosmic Era P4 - Freedom Appears!
Uncategorized
7
18.2%
143
COCI '15 Contest 7 #5 Prosti
COCI
15
18.2%
11
JOI '20 Spring Camp Day 1 P3 - Sweeping
JOI
25p
18.2%
2
A Math Contest P16 - Morbius vs. Suibom
Uncategorized
25
18.2%
20
IOI '14 P5 - Friend (Standard I/O)
IOI
30p
18.2%
188
TLE '16 Contest 6 (Mock CCC) J2 - Carol's Flowers
TLE
3p
18.2%
97
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