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CCC '25 S2 - Cryptogram Cracking Club
CCC '25 J5 - Connecting Territories
CCO '18 P1 - Geese vs. Hawks
Baltic OI '17 P6 - Cat in a tree
Arcadia Computing Contest 2 P5 - lp0 is on fire!
Baltic OI '14 P5 - Portals
IOI '08 P1 - Type Printer
Problem
Category
Points
AC %
Users
DWITE '09 R2 #3 - Binary Test String
DWITE
5
37.6%
43
DWITE '09 R2 #4 - Breadth First Not Quite Tree
DWITE
5
33.2%
154
DWITE '09 R2 #5 - Portals Redux
DWITE
12
35.7%
26
DWITE '09 R3 #1 - Quiz Time
DWITE
3
43.9%
113
DWITE '09 R3 #2 - Rounding to Fibonacci
DWITE
5
63.9%
176
DWITE '09 R3 #3 - Binary Test Strings 2
DWITE
5
70.5%
37
DWITE '09 R3 #4 - Spiral Out
DWITE
7
69.0%
17
DWITE '09 R3 #5 - Up To Four Colours
DWITE
12
61.6%
40
DWITE '09 R4 #1 - Social Media Overload
DWITE
3
56.0%
130
DWITE '09 R4 #2 - Verifying Distributed Work
DWITE
3
31.3%
45
DWITE '09 R4 #3 - Moving at the same time
DWITE
5
31.1%
57
DWITE '09 R4 #4 - Autocomplete
DWITE
7
58.2%
52
DWITE '09 R4 #5 - Ice Maze
DWITE
10
50.8%
38
DWITE '09 R5 #1 - ASCII bar graphs
DWITE
3
66.9%
149
DWITE '09 R5 #2 - Round to Second Prime
DWITE
5
57.3%
251
DWITE '09 R5 #3 - Summary Diff
DWITE
5
61.1%
20
DWITE '09 R5 #4 - Kind of like OCR
DWITE
7
50.8%
21
DWITE '09 R5 #5 - Weak Passwords
DWITE
5
38.8%
27
DWITE '09 R6 #1 - ROT13 Encryption
DWITE
3
45.9%
108
DWITE '09 R6 #2 - Round to power of two
DWITE
3
50.1%
188
DWITE '09 R6 #3 - Bill Amendments
DWITE
5
28.3%
13
DWITE '09 R6 #4 - Time for Change
DWITE
7
58.7%
226
DWITE '09 R6 #5 - Air Travel Planning
DWITE
7
60.7%
122
DWITE '09 R7 #1 - Binary Equipment
DWITE
3
43.4%
115
DWITE '09 R7 #2 - Sum of Primes
DWITE
5
55.2%
364
DWITE '09 R7 #3 - Oil Spill Area
DWITE
7
49.6%
83
DWITE '09 R7 #4 - What is this Algebra?
DWITE
12
15.7%
12
DWITE '09 R7 #5 - Snapper Chain
DWITE
10
52.0%
103
DWITE '10 R1 #1 - Age Gate
DWITE
3
32.8%
221
DWITE '10 R1 #2 - Robot Vacuum Prototype
DWITE
3
40.1%
65
DWITE '10 R1 #3 - Power tiles
DWITE
5
69.0%
140
DWITE '10 R1 #4 - Planting Trees
DWITE
7
48.9%
19
DWITE '10 R1 #5 - Ricochet Robot
DWITE
7
41.8%
22
DWITE '10 R2 #1 - Pattern Matching
DWITE
3
40.8%
97
DWITE '10 R2 #2 - Seating Arrangement
DWITE
5
53.8%
10
DWITE '10 R2 #3 - Escape and Loot
DWITE
5
34.1%
102
DWITE '10 R2 #4 - Fractions to Decimal
DWITE
7
38.8%
20
DWITE '10 R2 #5 - Cogwheels
DWITE
7
23.9%
13
DWITE '10 R3 #1 - Integers along a line
DWITE
5
21.7%
24
DWITE '10 R3 #2 - Unit rectangles
DWITE
5
56.2%
54
DWITE '10 R3 #3 - Dominos Tiling
DWITE
10
45.9%
298
DWITE '10 R3 #4 - Forest Fires
DWITE
7
40.6%
139
DWITE '10 R3 #5 - E-Searching
DWITE
7
41.7%
11
DWITE '10 R4 #1 - Future Printer
DWITE
3
50.6%
38
DWITE '10 R4 #2 - Primal Numbers
DWITE
5
58.2%
31
DWITE '10 R4 #3 - Binary Weight
DWITE
5
22.6%
41
DWITE '10 R4 #4 - Mountain Hiking
DWITE
7
40.1%
78
DWITE '10 R4 #5 - Sleepwalking Probabilities
DWITE
5
72.0%
13
DWITE '10 R5 #1 - Colourful Words
DWITE
5
50.9%
42
DWITE '10 R5 #2 - Safe from Rooks
DWITE
5
32.4%
254
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