Problem Set

ID Title Ratio
2001 Selection
(39 / 171) 22.81%
2002 Super Mario
(3 / 42) 7.14%
2003 Search Nearest Neighbour
(3 / 23) 13.04%
2004 Words Group
(25 / 55) 45.45%
2005 Job Scheduling
(9 / 44) 20.45%
2006 Wappo
(1 / 18) 5.56%
2007 How many ways
(21 / 132) 15.91%
2008 A Great Challenge
(12 / 36) 33.33%
2009 Deduction
(44 / 92) 47.83%
2010 GCD & LCM Inverse
(227 / 808) 28.09%
2011 Simple Problem
(251 / 1105) 22.71%
2012 Sort and Merge
(743 / 2041) 36.40%
2013 Turn Over Turn Over
(31 / 184) 16.85%
2014 Tiling
(185 / 349) 53.01%
2015 Crossed ladders
(555 / 1271) 43.67%
2016 Conic Distance
(206 / 439) 46.92%
2017 Peter's smokes
(856 / 2157) 39.68%
2018 Tullia and Chocolate II
(22 / 45) 48.89%
2019 The Top Shelf
(41 / 196) 20.92%
2020 Chessboard in FEN
(24 / 35) 68.57%
2021 Colored Sticks
(126 / 456) 27.63%
2022 Mersenne Composite Numbers
(71 / 113) 62.83%
2023 Zipper
(142 / 324) 43.83%
2024 Lenny's Lucky Lotto Lists
(84 / 141) 59.57%
2025 Going Home
(160 / 256) 62.50%
2026 Specialized Four-Digit Numbers
(437 / 573) 76.27%
2027 Jill's Tour Paths
(50 / 145) 34.48%
2028 Boundaries on 'A New Kind of Science'
(4 / 21) 19.05%
2029 Rate of Return
(35 / 69) 50.72%
2030 A Card Trick
(24 / 38) 63.16%
2031 Partitioning for fun and profit
(18 / 23) 78.26%
2032 ASCII Labyrinth
(11 / 16) 68.75%
2033 Ubiquitous Religions
(297 / 543) 54.70%
2034 Text Formalization
(7 / 19) 36.84%
2035 Center of Symmetry
(87 / 210) 41.43%
2036 Polynomial Remains
(70 / 112) 62.50%
2037 Mayor's posters
(79 / 232) 34.05%
2038 Queuing at the doctors
(13 / 17) 76.47%
2039 Grandpa's Rubik Cube
(7 / 13) 53.85%
2040 This Sentence is False
(25 / 43) 58.14%
2041 Will Indiana Jones Get There?
(12 / 17) 70.59%
2042 I hate SPAM, but some people love it
(24 / 41) 58.54%
2043 Noise Effect
(25 / 28) 89.29%
2044 Supermarket
(66 / 124) 53.23%
2045 Ambiguous permutations
(279 / 444) 62.84%
2046 Bullshit Bingo
(59 / 118) 50.00%
2047 106 miles to Chicago
(170 / 282) 60.28%
2048 Decorate the wall
(26 / 67) 38.81%
2049 Any fool can do it
(52 / 122) 42.62%
2050 Lazy Cows
(32 / 98) 32.65%
2051 Expedition
(133 / 426) 31.22%
2052 Around the world
(13 / 18) 72.22%
2053 Landscaping
(3 / 15) 20.00%
2054 Stacking Cylinders
(76 / 92) 82.61%
2055 Astonishing Movie Plan
(31 / 64) 48.44%
2056 Bookshelf
(60 / 222) 27.03%
2057 Complicated Translation
(366 / 962) 38.05%
2058 Diagonal Primes
(37 / 62) 59.68%
2059 Encrypting in a Safe Way
(9 / 19) 47.37%
2060 Fibonacci Problem Again
(218 / 572) 38.11%
2061 Great Wall Renovation
(37 / 182) 20.33%
2062 Help the Hurricane Victims
(92 / 399) 23.06%
2063 It's Pandaren Brewmaster Time!
(25 / 86) 29.07%
2064 Journey to Tibet
(183 / 456) 40.13%
2065 Fibonacci Number
(982 / 1822) 53.90%
2066 Word Reversal
(945 / 1575) 60.00%
2067 Adding 1s, 2s, and 3s
(319 / 454) 70.26%
2068 Triangle Centers
(33 / 50) 66.00%
2069 Jimmy's Riddles
(29 / 62) 46.77%
2070 Rhombs
(3 / 7) 42.86%
2071 Keep on Truckin'
(637 / 933) 68.27%
2072 Blurred Vision
(185 / 219) 84.47%
2073 The Door/Key Problem
(14 / 16) 87.50%
2074 Exact Change Only
(85 / 219) 38.81%
2075 Finding Nemo
(30 / 58) 51.72%
2076 Series Determination
(570 / 902) 63.19%
2077 T-Shirt Gumbo
(89 / 133) 66.92%
2078 Window Pains
(41 / 61) 67.21%
2079 So you want to be a 2^n-aire?
(30 / 38) 78.95%
2080 Ferry Loading III
(30 / 53) 56.60%
2081 Pick-up sticks
(96 / 179) 53.63%
2082 Rock-Paper-Scissors Tournament
(104 / 315) 33.02%
2083 Structural Equivalence
(3 / 5) 60.00%
2084 The Colored Cubes
(113 / 252) 44.84%
2085 Wavio Sequence
(124 / 300) 41.33%
2086 Taxes
(1 / 4) 25.00%
2087 Cube in Labyrinth
(8 / 26) 30.77%
2088 Delta-wave
(33 / 65) 50.77%
2089 4th point
(309 / 916) 33.73%
2090 Coupons
(4 / 9) 44.44%
2091 Chess
(102 / 248) 41.13%
2092 Gopher and hawks
(34 / 80) 42.50%
2093 Table legs
(5 / 15) 33.33%
2094 Common permutation
(143 / 433) 33.03%
2095 Security Panel
(13 / 45) 28.89%
2096 Roads in the North
(39 / 213) 18.31%
2097 Great Circle
(4 / 14) 28.57%
2098 Ultra-QuickSort
(245 / 768) 31.90%
2099 Up the Ante
(2 / 6) 33.33%
2100 Beat the Spread!
(847 / 2451) 34.56%