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Hot problems
CCC '16 S4 - Combining Riceballs
Appleby Contest '19 P5 - Matrix Operation
Cheerio Contest 1 S2 - School Expansion
WC '96 P6 - Bases Multiplication
CCCHK '15 J4 - Where to build my house?
DMOPC '23 Contest 1 P1 - Peak Grid
Max's Anger Contest Series 2 P3 - Array Anger
Problem
Category
Points
AC % ▴
Users
GFSSOC '15 Fall S5 - Raider
GFSSOC
17p
14.0%
137
DMOPC '22 Contest 1 P3 - Group Project
DMOPC
12p
14.0%
95
ECOO '12 R2 P2 - Password Strength
ECOO
5p
14.0%
20
Mock CCC '23 1 S5 - The Obligatory Data Structures Problem
Mock CCC
25p
14.0%
10
Sword Art Online Judge
Seasonal
7
14.0%
101
Bulgarian OI '09 P5 - Special Sequence
Bulgarian OI
30p
14.0%
27
NOIP '99 P2 - Palindrome Numbers
China NOI
7p
14.1%
25
IOI '16 P1 - Detecting Molecules (Standard I/O)
IOI
12p
14.1%
230
BSSPC '21 J4 - James's Magical Soups
Uncategorized
7p
14.1%
92
DMOPC '18 Contest 5 P2 - A Photography Problem
DMOPC
7
14.1%
127
DMOPC '15 Contest 6 P3 - Harvest
DMOPC
7p
14.1%
314
DMPG '16 S2 - Pandemic
DMOPC
7p
14.1%
85
DMOPC '18 Contest 1 P4 - Sorting
DMOPC
12p
14.1%
85
CCC '10 S1 - Computer Purchase
CCC
5
14.1%
1324
CCC '17 S4 - Minimum Cost Flow
CCC
17p
14.1%
771
DMOPC '23 Contest 1 P2 - Knights on Chessboard
DMOPC
10p
14.1%
197
DMOPC '16 Contest 3 P3 - Phantom Fight
DMOPC
10p
14.1%
98
Wesley's Anger Contest 2 Problem 4 - The Ninth Triangle of the Underworld
WAC
20
14.1%
11
COCI '08 Contest 2 #6 Cavli
COCI
25p
14.1%
25
PEG Test '14 - Gift Delivery
Uncategorized
10
14.1%
12
CCC '18 S3 - RoboThieves
CCC
12p
14.1%
1135
Geography Class
Uncategorized
5p
14.1%
67
TLE '16 Contest 7 P2 - Judging
TLE
15p
14.2%
10
Baltic OI '04 P1 - Ships
Baltic OI
7p
14.2%
12
CCO '05 P6 - Windows
CCO
30p
14.2%
28
Mock CCC '24 Contest 1 S5 - Mock CCC 2025
Mock CCC
20p
14.2%
18
TLE '16 Contest 6 (Mock CCC) J3 - Two Kangaroos
TLE
5p
14.2%
42
CCO '04 P4 - Return of Space Turtle
CCO
12
14.2%
46
The Return of A Plus B
Seasonal
0p
14.2%
341
Another Contest 3 Problem 4 - Range Updates and Range Queries
ACC
15
14.2%
54
Mock CCO '18 Contest 4 Problem 1 - Mining for Minerals
Mock CCO
15p
14.2%
40
CCO '16 P2 - Splitting Hares
CCO
15p
14.2%
89
DMOPC '21 Contest 3 P4 - Sorting Subsequences
DMOPC
20p
14.2%
32
DMOPC '22 Contest 4 P1 - Alone Time
DMOPC
5p
14.2%
179
DMOPC '21 Contest 10 P3 - Peculiar Reflections
DMOPC
12p
14.2%
75
TLE '17 Contest 8 P3 - Curious Numbers
TLE
10p
14.3%
70
Heap Dijkstra Revisited
Data Structure Tests
10
14.3%
10
OCC '19 G3 - Binary Game
Olympiads School
25p
14.3%
5
COCI '09 Contest 5 #6 Chuck
COCI
25p
14.3%
1
WC '15 Contest 3 S1 - Energy Absorption
Woburn Challenge
7p
14.3%
34
Google Code Jam '15 Qualification Round Problem D - Ominous Omino
Google Code Jam
12p
14.3%
3
Amplitude Hackathon '23 Practice Problem 2 - Go Amplitude!
Uncategorized
5p
14.3%
19
UACC 1 P5 - A Lab Report
Uncategorized
10
14.3%
52
The Contest Contest 1 P2 - A Typical CCC Senior Problem
Uncategorized
10p
14.3%
177
CEOI '17 P3 - Mousetrap
CEOI
25p
14.4%
16
COCI '06 Contest 1 #6 Debug
COCI
20p
14.4%
121
OCC '19 S3 - NAN Language
Olympiads School
7p
14.4%
31
IOI '99 P2 - Hidden Codes
IOI
20p
14.4%
10
RGPC '17 P4 - Snow Day
Uncategorized
10p
14.4%
102
DMPG '19 G5 - Hunting the White Whale
DMOPC
20p
14.4%
70
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