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Random
Hot problems
WC '17 Contest 3 J3 - Uncrackable
Problem
Category
Points ▾
AC %
Users
COCI '20 Contest 3 #4 Selotejp
COCI
15p
40.9%
47
DeMello's Leeches
Uncategorized
15p
56.3%
42
CCC '21 S5 - Math Homework
CCC
15p
24.6%
417
COCI '10 Contest 2 #5 Lunapark
COCI
15p
24.5%
9
COCI '16 Contest 2 #5 Zamjene
COCI
15p
19.3%
9
COCI '10 Contest 4 #6 Hrpa
COCI
15p
45.9%
34
COCI '11 Contest 2 #5 Funkcija
COCI
15p
16.7%
4
COCI '16 Contest 3 #5 Zoltan
COCI
15p
15.7%
22
COCI '11 Contest 2 #6 Raspored
COCI
15p
38.5%
5
COCI '16 Contest 6 #5 Sirni
COCI
15p
14.0%
34
COCI '16 Contest 7 #4 Poklon
COCI
15p
17.1%
26
COCI '13 Contest 4 #5 Čokolade
COCI
15p
11.9%
5
COCI '13 Contest 5 #5 Trokuti
COCI
15p
23.3%
26
COCI '10 Contest 6 #5 Step
COCI
15p
53.1%
21
COCI '13 Contest 6 #5 Hash
COCI
15p
14.5%
14
COCI '11 Contest 4 #6 Kriptogram
COCI
15p
27.3%
4
Segment Tree Practice 3
Uncategorized
15
49.0%
33
COCI '12 Contest 2 #5 Informacije
COCI
15p
25.6%
9
COCI '12 Contest 6 #5 Jedan
COCI
15
36.4%
28
COCI '12 Contest 6 #6 Bakterije
COCI
15
7.7%
3
COCI '12 Contest 4 #5 Dlakavac
COCI
15p
53.3%
7
COCI '17 Contest 5 #4 Karte
COCI
15p
47.5%
14
COCI '17 Contest 6 #4 Cover
COCI
15
38.1%
39
COCI '12 Contest 3 #6 Procesor
COCI
15p
50.0%
1
COCI '20 Contest 4 #5 Patkice II
COCI
15p
37.7%
35
COCI '17 Contest 7 #3 Go
COCI
15p
22.7%
13
COCI '17 Contest 7 #5 Dostavljač
COCI
15
35.8%
20
COCI '12 Contest 5 #5 Rotiraj
COCI
15p
24.6%
11
DMOPC '20 Contest 5 P3 - Bottom Row
DMOPC
15p
6.7%
41
Fast Search
Uncategorized
15p
26.6%
104
COCI '20 Contest 6 #5 Index
COCI
15p
49.7%
104
Canada Day Contest 2021 - Starfall
Seasonal
15
32.4%
112
An Animal Contest 2 P5 - Koala Carnival
AAC
15p
34.3%
95
DMOPC '20 Contest 5 P4 - Slacking Off
DMOPC
15p
13.5%
82
CPC '21 Contest 1 P5 - AQT and Modern Art
Uncategorized
15p
15.8%
45
COI '20 #1 Autobahn
COCI
15p
11.4%
28
Baltic OI '13 P1 - Ball Machine
Baltic OI
15p
23.4%
14
Calendar Contest Problem 5 — Reign of Terror
Uncategorized
15
3.3%
2
SAC '22 Code Challenge 3 P4 - Finding Friends
SAC Coding Challenge
15p
23.8%
64
Spring Coding Bowl '22 P4 - Circle Game
Uncategorized
15p
6.7%
10
Cute String Merging
Uncategorized
15p
35.1%
30
Spring Coding Bowl '22 P5 - Temple Placement
Uncategorized
15p
13.8%
7
ICPC NEERC 2014 I - Improvements
ICPC
15
25.0%
3
ICPC NWERC 2015 E - Elementary Math
ICPC
15
41.2%
4
Dynamic Sum
Uncategorized
15
14.6%
16
Another Contest 8 Problem 4 - Up and Down
ACC
15
11.4%
46
Another Contest 8 Problem 5 - U-Turn Finesse
ACC
15
18.9%
81
Fixing Shirts
Uncategorized
15
18.4%
24
DMOPC '21 Contest 2 P4 - Water Mechanics
DMOPC
15p
23.4%
56
UCRPC F21 I - Sphere Mongers
ICPC
15p
5.8%
6
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