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Random
Hot problems
CCC '24 S2 - Heavy-Light Composition
SAC '22 Code Challenge 5 P2 - Querying Extensions
Max's Anger Contest Series 2 P2 - Password Anger
CCC '12 S2 - Aromatic Numbers
The Cosmic Era P2 - Uneven Sand
CCC '20 J4 - Cyclic Shifts
CCC '13 J4 - Time on task
Problem
Category
Points ▾
AC %
Users
Presents
Uncategorized
10
15.2%
41
Circular Numbers
Uncategorized
10
15.8%
11
Caporegime
Uncategorized
10p
27.2%
34
Prime Street
Uncategorized
10
17.1%
31
Sleigh Ride
Uncategorized
10
27.0%
314
Intervals
Uncategorized
10p
20.5%
110
Stingy Candyman
Uncategorized
10
24.5%
38
WCIPEG 2018 ECOO Qualifier P4 - IOI tour
ECOO
10p
24.4%
10
Hashing
Uncategorized
10
22.0%
15
The Cake is a Dessert
Uncategorized
10
29.9%
198
You Might be a Redneck
Uncategorized
10p
8.8%
20
Pillaging
Uncategorized
10p
14.0%
35
CCC '06 J5 - CCC Othello
CCC
10p
36.0%
228
Another Contest 7 Problem 3 - Network Connections
ACC
10p
26.8%
191
Attraction
Uncategorized
10p
20.0%
74
IOI '10 P6 - Traffic Congestion (Standard I/O)
IOI
10p
33.0%
416
Joshua Needs Help
Uncategorized
10
54.1%
40
CPC '21 Contest 1 P3 - AQT and Circles
Uncategorized
10p
13.6%
107
The Heist
Uncategorized
10p
24.5%
21
World Tour Contest Problem 3 — Translation
Seasonal
10p
0.1%
2
An Extraordinarily Coordinated Christmas
Uncategorized
10p
45.7%
104
DMOPC '20 Contest 2 P3 - Roadrollification
DMOPC
10p
32.7%
124
Monkey Country
Uncategorized
10
20.7%
45
COCI '20 Contest 2 #2 Odašiljači
COCI
10p
20.1%
47
COCI '20 Contest 3 #2 Vlak
COCI
10p
46.0%
49
UTS Open '21 P2 - Prime Array
Uncategorized
10
27.0%
121
Appleby Contest '20 P3 - Ridiculous String
Uncategorized
10p
17.5%
188
Wesley's Anger Contest 6 Problem 3 - Difference Sorting
WAC
10p
16.2%
118
Mock CCC '21 S3 - Lexicographically Smallest Permutation Subsequence
Mock CCC
10p
8.4%
80
JOI '16 Final P1 - Foehn Phenomena
JOI
10p
65.1%
20
SAC '22 Code Challenge 2 P4 - Cookie Galore
SAC Coding Challenge
10
35.4%
99
CCC '21 S3 - Lunch Concert
CCC
10p
24.5%
1017
COCI '11 Contest 1 #4 Ples
COCI
10p
40.6%
48
COCI '16 Contest 2 #3 Nizin
COCI
10p
40.2%
252
COCI '16 Contest 2 #4 Prosječni
COCI
10p
42.2%
31
COCI '16 Contest 3 #3 Kroničan
COCI
10p
54.2%
49
COCI '16 Contest 4 #3 Kas
COCI
10p
28.8%
72
COCI '11 Contest 3 #3 Pogodak
COCI
10p
36.8%
20
COCI '16 Contest 7 #3 Igra
COCI
10p
21.7%
30
COCI '11 Contest 4 #4 Ograda
COCI
10p
24.5%
25
COCI '13 Contest 3 #4 Kolinje
COCI
10p
32.5%
10
COCI '10 Contest 5 #4 Honi
COCI
10p
33.9%
31
COCI '13 Contest 4 #3 Sumo
COCI
10p
28.0%
33
COCI '13 Contest 5 #3 Eksplozjia
COCI
10p
19.3%
134
COCI '10 Contest 6 #4 Abeceda
COCI
10p
7.4%
21
COCI '11 Contest 4 #5 Broj
COCI
10p
33.3%
8
COCI '12 Contest 2 #4 Popust
COCI
10p
12.8%
41
UCC Coding Competition '21 P5 - Woodcutting Game
Uncategorized
10p
21.3%
117
COCI '11 Contest 6 #4 Rez
COCI
10p
36.2%
29
COCI '17 Contest 6 #2 Alkemija
COCI
10p
8.3%
32
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