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Browse Problems
Title Total Submissions / Solving % Total Users / Solving %
FILE 100 - The 3n + 1 problem 926863
26.62%
143108
73.81%
FILE 101 - The Blocks Problem 124015
25.69%
25030
70.18%
FILE 102 - Ecological Bin Packing 110438
39.37%
32266
87.26%
FILE 103 - Stacking Boxes 46025
26.65%
12305
61.19%
FILE 104 - Arbitrage 33636
25.20%
7134
68.05%
FILE 105 - The Skyline Problem 64712
26.01%
15580
69.17%
FILE 106 - Fermat vs. Pythagoras 29877
34.26%
7066
67.35%
FILE 107 - The Cat in the Hat 53168
21.69%
9195
68.25%
FILE 108 - Maximum Sum 73712
44.64%
23870
83.55%
FILE 109 - SCUD Busters 14147
32.28%
3754
68.35%
FILE 110 - Meta-Loopless Sorts 13048
32.04%
3602
66.10%
FILE 111 - History Grading 35848
45.57%
13587
77.84%
FILE 112 - Tree Summing 39457
28.28%
8134
78.18%
FILE 113 - Power of Cryptography 78132
40.96%
24853
89.10%
FILE 114 - Simulation Wizardry 8965
32.56%
2606
75.33%
FILE 115 - Climbing Trees 7657
35.29%
2306
81.44%
FILE 116 - Unidirectional TSP 70284
25.34%
12704
72.63%
FILE 117 - The Postal Worker Rings Once 10079
49.61%
3973
89.35%
FILE 118 - Mutant Flatworld Explorers 28496
41.88%
10086
86.81%
FILE 119 - Greedy Gift Givers 44957
28.90%
13177
74.79%
FILE 120 - Stacks of Flapjacks 47342
41.17%
12852
87.25%
FILE 121 - Pipe Fitters 8412
43.11%
3415
87.26%
FILE 122 - Trees on the level 42054
29.46%
7549
74.58%
FILE 123 - Searching Quickly 14714
35.59%
4942
75.44%
FILE 124 - Following Orders 14948
39.16%
5089
78.78%
FILE 125 - Numbering Paths 11241
29.69%
3227
74.74%
FILE 126 - The Errant Physicist 4531
31.69%
1618
75.83%
FILE 127 - "Accordian" Patience 19163
40.04%
4834
81.59%
FILE 128 - Software CRC 20114
42.88%
4484
88.11%
FILE 129 - Krypton Factor 15854
39.83%
3146
84.33%
FILE 130 - Roman Roulette 9791
42.24%
3987
81.54%
FILE 131 - The Psychic Poker Player 4337
50.03%
1871
88.62%
FILE 132 - Bumpy Objects 4433
42.07%
1235
82.11%
FILE 133 - The Dole Queue 28345
49.59%
8056
89.00%
FILE 134 - Loglan-A Logical Language 3755
29.56%
1122
80.30%
FILE 135 - No Rectangles 3356
27.77%
1254
53.03%
FILE 136 - Ugly Numbers 124457
32.86%
30477
79.41%
FILE 137 - Polygons 4921
21.54%
1132
62.10%
FILE 138 - Street Numbers 21975
45.56%
8953
84.76%
FILE 139 - Telephone Tangles 10289
16.15%
1720
48.95%
FILE 140 - Bandwidth 16759
43.00%
3792
87.71%
FILE 141 - The Spot Game 8852
44.59%
2704
89.87%
FILE 142 - Mouse Clicks 7012
22.22%
2441
45.92%
FILE 143 - Orchard Trees 20628
12.58%
2667
44.69%
FILE 144 - Student Grants 7671
46.67%
3116
85.40%
FILE 145 - Gondwanaland Telecom 10592
25.59%
2892
74.76%
FILE 146 - ID Codes 35668
57.66%
16332
93.56%
FILE 147 - Dollars 64732
28.71%
12913
75.20%
FILE 148 - Anagram checker 5537
35.38%
1592
76.38%
FILE 149 - Forests 1315
45.78%
460
75.87%
FILE 150 - Double Time 2674
32.57%
865
66.24%
FILE 151 - Power Crisis 27282
60.51%
12086
93.17%
FILE 152 - Tree's a Crowd 12504
39.20%
3628
87.10%
FILE 153 - Permalex 7964
29.47%
2641
70.73%
FILE 154 - Recycling 7310
53.26%
3666
89.25%
FILE 155 - All Squares 7479
50.38%
3407
86.18%
FILE 156 - Ananagrams 35297
65.98%
11832
94.54%
FILE 157 - Route Finding 2142
32.63%
709
80.11%
FILE 158 - Calendar 3387
16.18%
778
57.20%
FILE 159 - Word Crosses 5634
24.41%
1820
60.71%
FILE 160 - Factors and Factorials 46568
31.80%
12917
83.03%
FILE 161 - Traffic Lights 10610
38.69%
3559
89.10%
FILE 162 - Beggar My Neighbour 6399
33.54%
1917
81.22%
FILE 163 - City Directions 1870
14.76%
353
58.36%
FILE 164 - String Computer 13964
31.46%
3068
75.33%
FILE 165 - Stamps 4459
41.20%
1498
80.77%
FILE 166 - Making Change 11841
39.24%
3200
86.09%
FILE 167 - The Sultan's Successors 28841
46.85%
8717
90.48%
FILE 168 - Theseus and the Minotaur 9589
33.73%
2090
73.59%
FILE 169 - Xenosemantics 2115
20.00%
332
64.76%
FILE 170 - Clock Patience 7343
45.46%
2742
90.26%
FILE 171 - Car Trialling 3480
14.22%
569
70.12%
FILE 172 - Calculator Language 2701
25.81%
781
69.65%
FILE 173 - Network Wars 3080
16.88%
642
44.86%
FILE 174 - Strategy 1317
39.26%
552
79.71%
FILE 175 - Keywords 2359
17.51%
573
47.47%
FILE 176 - City Navigation 979
31.97%
307
80.78%
FILE 177 - Paper Folding 3779
39.61%
1193
72.25%
FILE 178 - Shuffling Patience 1193
38.89%
444
77.48%
FILE 179 - Code Breaking 2392
25.29%
642
72.90%
FILE 180 - Eeny Meeny 2663
22.57%
694
43.37%
FILE 181 - Hearts 1249
48.92%
616
84.09%
FILE 182 - Bonus Bonds 913
42.72%
444
79.05%
FILE 183 - Bit Maps 7342
26.85%
1975
76.46%
FILE 184 - Laser Lines 4907
44.61%
1393
85.28%
FILE 185 - Roman Numerals 3131
40.85%
1025
82.73%
FILE 186 - Trip Routing 4782
31.45%
1582
70.29%
FILE 187 - Transaction Processing 3795
37.63%
1402
79.39%
FILE 188 - Perfect Hash 5352
49.16%
1847
88.36%
FILE 189 - Pascal Program Lengths 1117
22.83%
320
62.50%
FILE 190 - Circle Through Three Points 18631
35.24%
5737
78.46%
FILE 191 - Intersection 30656
22.91%
6166
69.36%
FILE 192 - Synchronous Design 1179
30.53%
428
69.63%
FILE 193 - Graph Coloring 23954
28.58%
5793
70.88%
FILE 194 - Triangle 2762
17.09%
558
48.57%
FILE 195 - Anagram 44930
25.88%
10781
69.64%
FILE 196 - Spreadsheet 13393
25.53%
2297
76.14%
FILE 197 - Cube 1571
19.80%
384
46.09%
FILE 198 - Peter's Calculator 2979
19.60%
643
63.61%
FILE 199 - Partial differential equations 1031
22.21%
401
44.89%
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