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Random
Hot problems
WC '17 Contest 3 J3 - Uncrackable
Problem
Category
Points ▴
AC %
Users
Another Contest 10 Problem 3 - Wesley's Anger Contest 7 Problem 3 - The Obligatory Rage Tree Problem
ACC
15p
1.1%
2
Waterloo 2008 Spring E - Balance
Waterloo Local
15
0.0%
0
ETSR '23 Online Round 2 Problem 3 - Stone Game
Uncategorized
15p
5.2%
44
ETSR '23 Online Round 2 Problem 2 - Equation
Uncategorized
15p
4.4%
35
ETSR '23 Onsite Round 1 Problem 2 - Origami
Uncategorized
15p
21.0%
24
Singularity Cup P3 - Interplanetary Travel
Uncategorized
15p
9.4%
98
COCI '23 Contest 1 #4 Kocke
COCI
15p
22.6%
23
WOSS Dual Olympiad 2023 S3: Flying
Uncategorized
15p
23.3%
16
COCI '23 Contest 2 #5 Zatopljenje
COCI
15p
39.6%
31
Yet Another Contest 8 P4 - Fluke 2
YAC
15p
3.3%
43
COCI '23 Contest 3 #5 Slučajna Cesta
COCI
15p
36.5%
17
COCI '23 Contest 5 #3 Piratski Kod
COCI
15p
44.8%
11
COCI '23 Contest 5 #4 Rolete
COCI
15p
28.8%
17
Infinity Card Decks
Olympiads School
15p
15.4%
10
City Travel
Olympiads School
15p
10.8%
10
MMCC '14 P1 - Tenri
Uncategorized
17p
23.1%
70
DMOPC '14 Contest 1 P6 - Biology Homework
DMOPC
17p
18.7%
33
GFSSOC '14 Winter S4 - Stalactites
GFSSOC
17p
23.5%
248
STNBD P4 - Ellis Fahrengart
Uncategorized
17p
15.3%
136
DMOPC '14 Contest 6 P6 - Trip
DMOPC
17p
20.6%
17
Facebook Hacker Cup '15 Round 1 P4 - Corporate Gifting
FHC
17
46.0%
88
UTS Open '15 #4 - Subway
Uncategorized
17p
30.4%
72
COCI '14 Contest 6 #5 Neo
COCI
17p
50.8%
170
JOI '14 Open P6 - Secret
JOI
17p
15.8%
116
CCO '14 P3 - Werewolf
CCO
17p
42.1%
194
CCC '15 S5 - Greedy For Pies
CCC
17p
23.5%
553
CCO Preparation Test 1 P3 - K-th Rank Student
Mock CCO
17p
35.2%
151
CCO Preparation Test 2 P1 - Concatenation
Mock CCO
17p
13.1%
32
GFSSOC '15 Fall S5 - Raider
GFSSOC
17p
14.0%
137
DMPG '15 G4 - Spacetime Convergence Cannons
DMOPC
17p
11.3%
48
DMPG '15 G6 - Yōkan
DMOPC
17p
10.8%
78
DMPG '15 S6 - Apples to Oranges
DMOPC
17p
11.0%
224
DMOPC '15 Contest 1 P6 - Lelei and Contest
DMOPC
17p
18.7%
391
DMOPC '15 Contest 2 P6 - Manhattan Magnets
DMOPC
17p
17.4%
69
New Year's '16 P7 - Old Christmas Lights
Seasonal
17p
18.9%
125
DMOPC '15 Contest 7 P5 - Ariadne's Thread
DMOPC
17p
21.0%
62
Back To School '16: Times Table
Seasonal
17p
9.5%
53
TLE '16 Contest 1 P5 - Battle Plan
TLE
17p
21.6%
44
COCI '15 Contest 1 #5 Relativnost
COCI
17p
13.9%
33
TLE '16 Contest 2 P5 - Thanksgiving Feast
TLE
17p
8.5%
8
COI '06 #2 Policija
COCI
17p
18.1%
146
TLE '16 Contest 4 P5 - Buying Gifts
TLE
17p
15.6%
18
DMOPC '16 Contest 3 P4 - Serpent's Search
DMOPC
17p
0.6%
1
DMOPC '16 Contest 3 P6 - Long Lost Love
DMOPC
17p
18.9%
37
HCI '16 - Gifts
Uncategorized
17p
37.5%
8
HCI '16 - BinaryBomb
Uncategorized
17p
50.0%
4
ICPC ECNA 2000 C - Rational Approximation
ICPC
17
28.6%
2
MNYC '17: Bells
Seasonal
17p
19.0%
62
DMPG '17 G2 - Holy Grail War
DMOPC
17p
27.8%
253
CCC '17 S4 - Minimum Cost Flow
CCC
17p
14.1%
769
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