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Random
Hot problems
CCC '24 J4 - Troublesome Keys
COCI '22 Contest 4 #1 7Krokods
CCC '24 S2 - Heavy-Light Composition
CCC '19 J3 - Cold Compress
COCI '23 Contest 5 #1 Zlagalica
CCC '24 J5 - Harvest Waterloo
CCC '24 S3 - Swipe
Problem
Category
Points
AC %
Users ▾
Prime Street
Uncategorized
10
17.1%
31
Another Contest 7 Problem 4 - Team Assignments
ACC
12p
20.0%
31
James' XOR Update
Uncategorized
12p
28.2%
31
Wesley's Anger Contest 6 Problem 6 (Easy Version) - Santa's Candy Factory
WAC
20p
9.1%
31
DMOPC '20 Contest 4 P5 - Cyclic Cypher
DMOPC
17p
10.0%
31
COCI '16 Contest 2 #4 Prosječni
COCI
10p
42.2%
31
COCI '11 Contest 2 #2 Okret
COCI
7p
54.1%
31
COCI '13 Contest 6 #2 Font
COCI
7p
32.1%
31
SAC '22 Code Challenge 1 P5 - That Wall
SAC Coding Challenge
12
26.9%
31
Mock CCC '22 1 S4 - Berkeley Math Tournament Statistics
Mock CCC
20p
8.7%
31
Good Sets
Uncategorized
10p
23.9%
31
APIO '23 P1 - Cyberland
APIO
17p
9.1%
31
EGOI '23 P6 - Candy
EGOI
12p
24.4%
31
COCI '23 Contest 2 #5 Zatopljenje
COCI
15p
39.6%
31
COCI '14 Contest 5 #6 Divljak
COCI
40p
16.7%
30
DMPG '15 G2 - 1-String B2-VPG Representation of Planar Graphs
DMOPC
15p
18.4%
30
MWC '15 #1 P4: Genetic Probability
MWC
5p
29.2%
30
TLE '16 Contest 1 P3 - Joey and Chemistry
TLE
7p
14.8%
30
Power Distribution
Uncategorized
7p
14.4%
30
COI '07 #2 Kolekcija
COCI
20p
10.7%
30
ECOO '12 R1 P3 - Triangles
ECOO
5p
23.9%
30
Summer Institute '17 Contest 1 P1 - Ant Clans
SIUCF
20p
16.9%
30
DWITE '08 R3 #3 - Unicorns and Teaspoons
DWITE
5
67.3%
30
CTU Open Contest 2017 - Amusement Anticipation
ICPC
5
23.9%
30
DMOPC '18 Contest 1 P6 - Sorting
DMOPC
20p
18.7%
30
Inaho XI
Uncategorized
5p
44.5%
30
APIO '19 P3 - Street Lamps
APIO
35p
11.0%
30
Teleportation Tangle
Uncategorized
7p
27.5%
30
COCI '15 Contest 7 #4 Otpor
COCI
12
69.2%
30
NOI '13 P4 - Matrix Game
China NOI
20p
17.6%
30
SMAC 08/09 (Oct) #5 - Crossroads
Uncategorized
12p
25.1%
30
WC '15 Contest 4 S2 - World Tour
Woburn Challenge
12p
29.2%
30
WC '17 Contest 2 S3 - Battle of the Pelennor Fields
Woburn Challenge
12p
34.4%
30
COCI '11 Contest 1 #5 Sort
COCI
12p
36.2%
30
Segment Tree Practice 3
Uncategorized
15
48.4%
30
COCI '11 Contest 6 #4 Rez
COCI
10p
37.2%
30
COCI '12 Contest 5 #4 Hipercijevi
COCI
10p
25.8%
30
Subarray Search
Uncategorized
7
26.7%
30
Cute String Merging
Uncategorized
15p
35.1%
30
NOI '20 P1 - Delicacy
China NOI
25p
12.6%
30
K-th Minimum Number
Uncategorized
17
45.0%
30
CCO '22 P5 - Phone Plans
CCO
20p
12.1%
30
A Math Contest P15 - Matrix Fixed Point
Uncategorized
20
68.3%
30
The Game of Nim
Uncategorized
12p
29.5%
29
Line Sweep
Uncategorized
25
9.8%
29
TLE '16 Contest 2 P4 - Harambe's Noble Quest
TLE
15p
11.5%
29
Facebook Hacker Cup '17 Qualifying Round P3 - Fighting the Zombie
FHC
10p
19.4%
29
TLE '16 Contest 6 (Mock CCC) J4 - Ski Rentals
TLE
7p
21.2%
29
Waterloo 2017 Winter D - Vera and Sorting
Waterloo Local
15
46.3%
29
DMPG '17 S6 - Brackets, Braces, and Boxes
DMOPC
12p
10.0%
29
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