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Hot problems
Educational DP Contest AtCoder I - Coins
Educational DP Contest AtCoder K - Stones
CCC '12 S3 - Absolutely Acidic
DMOPC '20 Contest 4 P1 - Missing Numbers
CCC '21 J3 - Secret Instructions
DWITE '07 R3 #4 - The Convex Fence Company
CCC '24 J5 - Harvest Waterloo
Problem
Category
Points
AC %
Users ▾
APIO '10 P2 - Patrol
APIO
20p
17.3%
206
New Year's '18 P1 - Happy New Year!
Seasonal
3p
24.3%
206
PEG Test '14 - Balance
Uncategorized
5
40.3%
206
WC '17 Finals S1 - An Interspecific Army
Woburn Challenge
5p
54.7%
206
SAC '22 Code Challenge 4 P3 - Obligatory Math Problem
SAC Coding Challenge
5
38.6%
206
Mock CCC '22 1 S1 - Big Mattress Tournament
Mock CCC
5p
13.4%
206
Halloween '14 P2 - Cat Girls
Seasonal
12p
27.8%
205
COCI '14 Contest 2 #1 Mobitel
COCI
5p
51.2%
205
DMOPC '21 Contest 3 P1 - Sums & Differences
DMOPC
7p
18.0%
205
MMCC '14 P3 - Esdeath
Uncategorized
15p
14.9%
204
CCO Preparation Test 6 P2 - An Easy Problem
Mock CCO
12p
32.5%
204
DMOPC '19 Contest 1 P2 - Good Writing
DMOPC
7
21.9%
204
Another Contest 6 Problem 4 - A Plus B (Hard)
ACC
0p
20.9%
204
WC '18 Contest 1 J2 - Making the Cut
Woburn Challenge
3p
67.2%
204
IOI '99 P1 - Little Shop of Flowers
IOI
10
30.6%
204
WC '15 Contest 3 J1 - Battle Predictions
Woburn Challenge
3
36.6%
204
CCO '11 P3 - Spies Like Us
CCO
10p
22.8%
203
COCI '07 Contest 4 #3 Lektira
COCI
5
48.3%
203
COCI '08 Contest 6 #4 Cuskija
COCI
10
14.9%
203
WC '96 P6 - Bases Multiplication
Woburn Challenge
5
39.9%
203
SAC '21 Code Challenge P4 - Averaging Averages
SAC Coding Challenge
5p
26.8%
203
Sandwich
Uncategorized
5
33.7%
202
COCI '14 Contest 3 #4 Coci
COCI
15p
20.7%
202
VM7WC '15 #2 Silver - 4 Nations, 1 Secret
VM7WC
10
22.1%
202
COCI '14 Contest 7 #5 Prosjek
COCI
15p
28.1%
202
CCO Preparation Test 5 P1 - City Game
Mock CCO
15
26.4%
202
TLE '17 Contest 4 P1 - Riding the Curve
TLE
3p
16.8%
202
Appleby Contest '19 P4 - Rectangles
Uncategorized
7p
19.6%
201
COCI '09 Contest 7 #1 Spavanac
COCI
5
62.3%
201
SAC '21 Code Challenge P3 - DeMello's Replacement
SAC Coding Challenge
5
19.5%
201
Yet Another Contest 7 P2 - Coprime Grid
YAC
10p
22.3%
201
GFSSOC '14 Winter S1 - Friendship is a number
GFSSOC
5p
42.5%
200
WOSS Dual Olympiad 2022 J2: Counting Christmas Trees
Seasonal
3
37.8%
200
TLE '17 Contest 8 P2 - Ship Defense
TLE
5p
15.1%
199
Cheerio Contest 1 J1 - Pronounceable Words
Uncategorized
3
38.4%
199
GFSSOC '17 J1 - Ramen and Studying
GFSSOC
3p
20.6%
198
The Cake is a Dessert
Uncategorized
10
29.9%
198
COCI '14 Contest 3 #5 Stogovi
COCI
15p
25.9%
197
CCO '13 P6 - Repetitivity
CCO
25p
42.0%
197
Back To School '16: Dodgeball
Seasonal
7p
16.3%
197
DMOPC '17 Contest 4 P0 - Catch
DMOPC
3
24.9%
197
Wesley's Anger Contest 3 Problem 2 - Eat, Sleep, Code, Repeat
WAC
5p
28.8%
197
DMOPC '23 Contest 1 P2 - Knights on Chessboard
DMOPC
10p
14.1%
197
Binary Search Tree Test
Data Structure Tests
15
38.6%
196
HCI '16 - Cheapest Operation Ever
Uncategorized
20p
28.0%
196
DMPG '18 B6 - House of Cards
DMOPC
7p
41.1%
196
Triway Cup '18 Summer B - Beautiful Water Pearl
Seasonal
7
25.5%
196
An Animal Contest 2 P4 - Koala Gambling
AAC
12
19.7%
196
Facebook Hacker Cup '15 Round 1 P3 - Winning at Sports
FHC
12
50.3%
195
BlueBook - Change
BlueBook
3
9.0%
195
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