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Hot problems
ECOO '13 R1 P1 - Take a Number
APIO '10 P1 - Commando
DWITE '10 R3 #3 - Dominos Tiling
CCC '04 S2 - TopYodeller
CCC '24 J5 - Harvest Waterloo
A Math Contest P5 - Good Arrays
An Animal Contest 2 P3 - Koala Balloons
Problem
Category
Points ▴
AC %
Users
DWITE '09 R2 #3 - Binary Test String
DWITE
5
36.2%
38
DWITE '11 R4 #2 - Prime Time
DWITE
5
49.9%
263
DWITE '09 R3 #3 - Binary Test Strings 2
DWITE
5
73.2%
27
DWITE '09 R3 #2 - Rounding to Fibonacci
DWITE
5
63.4%
171
DWITE '11 R3 #2 - Magical Ponds
DWITE
5
30.0%
8
DWITE '12 R5 #4 - Fencing Problems
DWITE
5
15.5%
9
DWITE '11 R5 #5 - Binary Weight
DWITE
5
21.8%
34
DWITE '08 R4 #2 - Tic Tac Win
DWITE
5
38.9%
74
DWITE '09 R5 #2 - Round to Second Prime
DWITE
5
57.2%
250
DWITE '11 R2 #2 - Scratch Card
DWITE
5
29.5%
35
DWITE '10 R4 #5 - Sleepwalking Probabilities
DWITE
5
71.4%
11
DWITE '07 R4 #2 - And the winner is...
DWITE
5
35.3%
81
DWITE '09 R2 #1 - Angles
DWITE
5
46.6%
18
DWITE '10 R4 #3 - Binary Weight
DWITE
5
21.7%
37
DWITE '10 R2 #2 - Seating Arrangement
DWITE
5
52.2%
8
DWITE '07 R3 #2 - There's An Essay In My Code
DWITE
5
30.2%
222
DWITE '08 R3 #3 - Unicorns and Teaspoons
DWITE
5
67.7%
31
DWITE '07 R5 #2 - Number of factors
DWITE
5
41.8%
331
DWITE '08 R3 #1 - ASCII Rhombus
DWITE
5
70.3%
47
DWITE '07 R3 #1 - Yet Another Primes Question
DWITE
5
58.2%
156
DWITE '09 R1 #3 - That Missing Number
DWITE
5
52.7%
257
DWITE '12 R1 #4 - Trick or Tree'ing
DWITE
5
23.5%
266
DWITE '10 R3 #2 - Unit rectangles
DWITE
5
54.5%
52
DWITE '08 R5 #2 - Kill Dash Nine
DWITE
5
50.0%
21
DWITE '11 R2 #3 - Anonymous Shopping
DWITE
5
40.0%
10
DWITE '09 R5 #3 - Summary Diff
DWITE
5
61.8%
19
DWITE '11 R3 #3 - Combo Discounts
DWITE
5
70.0%
7
DWITE '09 R6 #3 - Bill Amendments
DWITE
5
25.5%
11
DWITE '09 R1 #2 - Word Scrambler
DWITE
5
57.0%
225
DWITE '08 R3 #2 - Wordcount++
DWITE
5
35.6%
437
DWITE '12 R5 #1 - Travel Time
DWITE
5
43.8%
32
DWITE '10 R5 #2 - Safe from Rooks
DWITE
5
32.5%
212
DWITE '11 R2 #1 - Wandering Billy
DWITE
5
35.0%
31
DWITE '11 R1 #1 - Arab-lish Numbers
DWITE
5
29.2%
45
DWITE '11 R4 #1 - Crossword Count
DWITE
5
50.0%
17
DWITE '10 R4 #2 - Primal Numbers
DWITE
5
56.3%
28
DWITE '10 R2 #3 - Escape and Loot
DWITE
5
34.4%
95
DWITE '02 R2 #5 - Now I know my ABCs
DWITE
5
38.9%
132
DWITE '02 R2 #1 - Sales!
DWITE
5
31.8%
91
DWITE '02 R2 #2 - The Five M's of Stats 101
DWITE
5
31.1%
111
DWITE '06 R5 #3 - UPC Check Digit
DWITE
5
38.0%
100
DWITE '08 R5 #3 - Working Directory
DWITE
7
45.9%
16
DWITE '10 R1 #5 - Ricochet Robot
DWITE
7
42.1%
19
DWITE '12 R5 #3 - Triangle Count
DWITE
7
33.7%
164
DWITE '07 R5 #4 - Train ride
DWITE
7
53.4%
37
DWITE '08 R4 #1 - Four player Pong with no players
DWITE
7
71.9%
58
DWITE '08 R2 #4 - Big shiny tunes
DWITE
7
63.0%
83
DWITE '09 R6 #4 - Time for Change
DWITE
7
58.0%
210
DWITE '07 R5 #5 - Tetris!
DWITE
7
25.9%
6
DWITE '10 R3 #4 - Forest Fires
DWITE
7
39.8%
129
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