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Random
Hot problems
APIO '10 P1 - Commando
COCI '08 Contest 3 #6 Najkraci
CCC '24 J5 - Harvest Waterloo
TSS Club Fair 2017 Problem B
CCC '24 J4 - Troublesome Keys
CCC '04 S2 - TopYodeller
DWITE '10 R3 #3 - Dominos Tiling
Problem
Category
Points
AC %
Users ▴
A Math Contest P3 - LIS Reconstruction
Uncategorized
7
47.0%
160
Wesley's Anger Contest Reject 5 - Two Permutations
WAC
5p
18.0%
160
Mock CCC '15 J5 - Royal Guard
Mock CCC
10p
16.6%
161
CCC '98 S3 - Mars Rover
CCC
7p
16.5%
161
CCO '05 P1 - Number Matrix
CCO
10
24.2%
161
ICHB Selection Contest '17 Problem 3 - Parallel Universe
Uncategorized
12p
22.9%
161
Rat In A Maze
Uncategorized
5
34.8%
161
Educational DP Contest AtCoder Z - Frog 3
Uncategorized
20
38.5%
161
DMOPC '21 Contest 4 P1 - Tree Shopping
DMOPC
7
16.4%
161
DMOPC '22 Contest 3 P2 - New Components
DMOPC
10p
17.9%
161
DMPG '15 B3 - Picking Berries
DMOPC
3p
26.7%
162
OCC '19 B1 - Darcy_Liu
Olympiads School
3
15.0%
162
IOI '15 P4 - Horses (Standard I/O)
IOI
15p
7.6%
162
COCI '08 Regional #1 Nop
COCI
5
33.2%
163
New Year's '18 P4 - The Polar Express
Seasonal
7p
25.0%
163
GlobeX Cup '18 J3 - Good Numbers
Uncategorized
5p
25.8%
163
DMOPC '19 Contest 2 P3 - Selection
DMOPC
12
38.7%
163
CCO '03 P4 - Constrained Permutations
CCO
5
49.8%
163
COCI '20 Contest 6 #1 Bold
COCI
5p
67.7%
163
An Animal Contest 5 P3 - Ski Resort
AAC
10
12.5%
163
CSPC '15 #1 - The Card Game
CSPC
3
16.7%
164
COCI '08 Regional #2 Majstor
COCI
5
51.2%
164
DWITE '12 R5 #3 - Triangle Count
DWITE
7
33.7%
164
UCC Coding Competition '20 P5 - Public Transport
Uncategorized
7p
53.8%
164
DMOPC '21 Contest 4 P3 - Palindromic Presents
DMOPC
12p
22.2%
164
Yet Another Contest 4 P2 - Alchemy 2
YAC
7p
26.3%
164
DMOPC '22 Contest 5 P2 - Absolutely Even
DMOPC
7p
19.3%
164
CCC '24 S4 - Painting Roads
CCC
12p
35.9%
164
COCI '14 Contest 3 #1 Strojopis
COCI
5p
61.9%
165
COCI '14 Contest 4 #4 Mravi
COCI
10p
44.9%
165
MNYC '16: Rocks
Seasonal
15p
28.1%
165
DMPG '16 B2 - Reward Reminiscence
DMOPC
3p
20.6%
165
GlobeX Cup '18 J4 - Magical Functions
Uncategorized
7p
20.3%
165
DMPG '19 S1 - Candy Shop Tycoon
DMOPC
5
26.8%
165
QCC P0 - Thermometer
Uncategorized
3
54.1%
165
COCI '14 Contest 6 #4 Kratki
COCI
10p
33.4%
166
DWITE '10 R5 #3 - Balancing Act
DWITE
7
39.3%
166
Valentine's Day '18 J3 - Are they cute?
Mock CCC
5p
18.3%
166
DMPG '18 B5 - Mimi and Substrings
DMOPC
7p
29.7%
166
COCI '18 Contest 1 #1 Nadan
COCI
3p
39.4%
166
DMOPC '18 Contest 6 P0 - SQL Queries
DMOPC
3
28.4%
166
WC '15 Contest 1 J2 - Grouping Recruits
Woburn Challenge
5
32.5%
166
Mock CCC '23 Contest 1 J4 - String Decryption
Mock CCC
5p
16.9%
166
CCO '17 P5 - Professional Network
CCO
20p
32.6%
167
ECOO '19 R1 P2 - L-Systems Go
ECOO
5p
22.6%
167
IOI '11 P1 - Tropical Garden (Standard I/O)
IOI
25p
11.8%
167
Another Contest 9 Problem 1 - Black Room Boy
ACC
3
53.2%
167
DMOPC '22 Contest 2 P2 - Line Trace
DMOPC
7p
34.1%
167
GFSSOC '14 Winter S2 - Speech
GFSSOC
5p
24.4%
168
Another Contest 3 Problem 3 - Lexicographically Largest Common Subsequence
ACC
7
17.9%
168
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