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Random
Hot problems
COCI '08 Contest 4 #6 Periodni
CCC '24 J4 - Troublesome Keys
CCC '24 S2 - Heavy-Light Composition
CCC '19 J3 - Cold Compress
APIO '09 P1 - Digging for Oil
COCI '22 Contest 4 #1 7Krokods
CCC '24 J5 - Harvest Waterloo
Problem
Category
Points
AC %
Users ▴
DMOPC '21 Contest 3 P2 - Weak Data
DMOPC
10p
11.9%
160
A Math Contest P3 - LIS Reconstruction
Uncategorized
7
47.0%
160
CCC '98 S3 - Mars Rover
CCC
7p
16.5%
161
CCO '05 P1 - Number Matrix
CCO
10
24.2%
161
New Year's '18 P4 - The Polar Express
Seasonal
7p
24.9%
161
Rat In A Maze
Uncategorized
5
34.7%
161
DMOPC '21 Contest 4 P1 - Tree Shopping
DMOPC
7
16.4%
161
An Animal Contest 5 P3 - Ski Resort
AAC
10
12.4%
161
DMOPC '22 Contest 3 P2 - New Components
DMOPC
10p
17.9%
161
CCO '23 P1 - Binaria
CCO
12p
23.8%
161
CSPC '15 #1 - The Card Game
CSPC
3
16.6%
162
DMPG '16 B2 - Reward Reminiscence
DMOPC
3p
20.5%
162
DMOPC '19 Contest 2 P3 - Selection
DMOPC
12
38.6%
162
UCC Coding Competition '20 P5 - Public Transport
Uncategorized
7p
53.6%
162
WC '17 Contest 1 J3 - Stanley
Woburn Challenge
3
52.5%
162
IOI '15 P4 - Horses (Standard I/O)
IOI
15p
7.6%
162
COCI '08 Regional #1 Nop
COCI
5
33.2%
163
Valentine's Day '18 J3 - Are they cute?
Mock CCC
5p
18.1%
163
COCI '18 Contest 1 #1 Nadan
COCI
3p
46.2%
163
GlobeX Cup '18 J4 - Magical Functions
Uncategorized
7p
20.3%
163
GlobeX Cup '18 J3 - Good Numbers
Uncategorized
5p
25.8%
163
CCO '03 P4 - Constrained Permutations
CCO
5
49.8%
163
COCI '20 Contest 6 #1 Bold
COCI
5p
67.4%
163
DMOPC '21 Contest 4 P3 - Palindromic Presents
DMOPC
12p
22.2%
163
GFSSOC '14 Winter S2 - Speech
GFSSOC
5p
24.3%
164
MNYC '16: Rocks
Seasonal
15p
28.1%
164
COCI '08 Regional #2 Majstor
COCI
5
51.2%
164
ECOO '19 R1 P2 - L-Systems Go
ECOO
5p
22.6%
164
DMPG '19 S1 - Candy Shop Tycoon
DMOPC
5
26.7%
164
QCC P0 - Thermometer
Uncategorized
3
54.0%
164
WC '15 Contest 1 J2 - Grouping Recruits
Woburn Challenge
5
32.3%
164
IOI '11 P1 - Tropical Garden (Standard I/O)
IOI
25p
11.7%
164
Another Contest 9 Problem 1 - Black Room Boy
ACC
3
53.9%
164
Yet Another Contest 4 P2 - Alchemy 2
YAC
7p
26.3%
164
DMOPC '22 Contest 5 P2 - Absolutely Even
DMOPC
7p
19.2%
164
COCI '14 Contest 3 #1 Strojopis
COCI
5p
62.7%
165
COCI '14 Contest 4 #4 Mravi
COCI
10p
44.9%
165
CCO '17 P5 - Professional Network
CCO
20p
32.5%
165
DWITE '10 R5 #3 - Balancing Act
DWITE
7
39.3%
165
DMOPC '18 Contest 6 P0 - SQL Queries
DMOPC
3
28.5%
165
Another Contest 4 Problem 3 - An Isosceles Right Triangle
ACC
0
42.0%
165
DMOPC '19 Contest 5 P4 - Cafeteria Confrontation Conundrum
DMOPC
7p
40.0%
165
GFSS Christmas Challenge P1 - Arithmetic Operators
GFSSOC
3
70.5%
165
SAC '22 Code Challenge 3 Junior P4 - Normal Conversions
SAC Coding Challenge
5p
27.4%
165
Mock CCC '23 Contest 1 J4 - String Decryption
Mock CCC
5p
17.1%
165
DMPG '18 B5 - Mimi and Substrings
DMOPC
7p
29.7%
166
OTHS Coding Competition 1 (Mock CCC) J4 - Railgun
Uncategorized
7p
23.9%
166
CCC '00 S5 - Sheep and Coyotes
CCC
10p
4.0%
167
IOI '98 P3 - Party Lamps
IOI
12p
33.4%
167
COCI '17 Contest 5 #2 Spirale
COCI
7p
33.5%
167
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