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Hot problems
CCC '17 S5 - RMT
ECOO '19 R2 P1 - Email
COCI '06 Regional #1 Bard
Tree Tasks
COCI '15 Contest 2 #1 Marko
Summer Institute '17 Contest 1 P8 - Mo' Money
CCC '16 J4 - Arrival Time
Problem
Category
Points
AC %
Users
Infinity Card Decks
Olympiads School
15p
18.7%
23
Three Colors
Olympiads School
12p
48.7%
39
Three Nodes
Olympiads School
17p
12.1%
22
0-1 Sequence
Olympiads School
15p
20.4%
8
Bob's Table
Olympiads School
20p
21.1%
9
Shortest Manhattan Diameter
Olympiads School
20p
3.0%
1
String Recovery
Olympiads School
15p
14.3%
8
Bob's Vacuum
Olympiads School
20p
18.2%
3
Bob's Max Subarray Sum
Olympiads School
25p
8.1%
5
Chasing Game
Olympiads School
20p
6.3%
3
Longest Path in Subtree
Olympiads School
20p
6.8%
3
Array Game
Olympiads School
15p
7.1%
9
Olympic Scoring
Uncategorized
3
13.4%
143
Longest Up-Down Subsequence
POI
12p
30.1%
142
A Fenwick Tree Question
Olympiads School
15
30.2%
74
Ones
Uncategorized
10p
13.3%
13
Matchings
POI
30p
12.8%
3
Mailing Origami
Uncategorized
20
9.1%
67
Returning Home
Uncategorized
10
23.2%
81
One Small Favour
Uncategorized
10p
1.2%
18
Another Small Favour
Uncategorized
15p
5.0%
9
OTHS Coding Competition 1 (Mock CCC) J1 - Math Assistance
Uncategorized
3
65.2%
477
OTHS Coding Competition 1 (Mock CCC) J2 - Wand Selection
Uncategorized
3
57.3%
369
OTHS Coding Competition 1 (Mock CCC) J3 - Explosion
Uncategorized
5p
35.6%
263
OTHS Coding Competition 1 (Mock CCC) J4 - Railgun
Uncategorized
7p
23.9%
192
OTHS Coding Competition 1 (Mock CCC) J5 - Scavenger Hunt
Uncategorized
10p
21.7%
89
OTHS Coding Competition 2 P1 - Chess Pieces
Uncategorized
3
57.0%
362
OTHS Coding Competition 2 P2 - Ghoul Investigators
Uncategorized
3p
43.8%
288
OTHS Coding Competition 2 P3 - Tally Clicker
Uncategorized
5
41.9%
259
OTHS Coding Competition 2 P4 - Magic Barrier
Uncategorized
5p
37.3%
202
OTHS Coding Competition 2 P5 - Coffee Jelly
Uncategorized
7
40.8%
170
OTHS Coding Competition 3 (Mock CCC) S1 - The 5th Laboratory
Uncategorized
5
21.9%
147
OTHS Coding Competition 3 (Mock CCC) S2 - Together Forever
Uncategorized
7p
14.6%
75
OTHS Coding Competition 3 (Mock CCC) S3 - Domain Expansion
Uncategorized
10p
33.5%
66
OTHS Coding Competition 3 (Mock CCC) S4 - Magic Library
Uncategorized
15p
17.6%
29
OTHS Coding Competition 3 (Mock CCC) S5 - World Tree
Uncategorized
15p
27.5%
24
OTHS Coding Competition 4 P1 - Square Root Decomposition
Uncategorized
3
70.9%
190
OTHS Coding Competition 4 P2 - Furina's Rounding
Uncategorized
5p
19.6%
94
OTHS Coding Competition 4 P3 - Photo
Uncategorized
5p
50.4%
102
OTHS Coding Competition 4 P4 - Mathemagical Experiment
Uncategorized
10p
14.3%
43
OTHS Coding Competition 4 P5 - Teleport
Uncategorized
12p
29.4%
34
OTHS Coding Competition 4 P5 - Teleport (Hard)
Uncategorized
17p
35.0%
4
BlueBook - Cross Country
BlueBook
3
43.5%
1385
BlueBook - Cost
BlueBook
3
21.1%
773
BlueBook - Direction
BlueBook
3
39.6%
956
BlueBook - Pay
BlueBook
3
19.9%
419
BlueBook - Change
BlueBook
3
9.6%
228
BlueBook - Times Tables
BlueBook
3
53.8%
1627
BlueBook - Max is Last
BlueBook
3
40.6%
541
BlueBook - Interest
BlueBook
3
28.8%
617
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