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Browse Problems
Title Total Submissions / Solving % Total Users / Solving %
FILE 100 - The 3n + 1 problem 923043
26.61%
142490
73.75%
FILE 101 - The Blocks Problem 123581
25.66%
24929
70.18%
FILE 102 - Ecological Bin Packing 110185
39.37%
32203
87.27%
FILE 103 - Stacking Boxes 45967
26.62%
12280
61.12%
FILE 104 - Arbitrage 33597
25.20%
7122
68.03%
FILE 105 - The Skyline Problem 64547
26.00%
15533
69.18%
FILE 106 - Fermat vs. Pythagoras 29837
34.28%
7052
67.39%
FILE 107 - The Cat in the Hat 53157
21.68%
9187
68.27%
FILE 108 - Maximum Sum 73364
44.64%
23797
83.54%
FILE 109 - SCUD Busters 14127
32.28%
3742
68.39%
FILE 110 - Meta-Loopless Sorts 13020
31.95%
3586
66.01%
FILE 111 - History Grading 35773
45.53%
13559
77.84%
FILE 112 - Tree Summing 39432
28.26%
8117
78.16%
FILE 113 - Power of Cryptography 77859
40.99%
24773
89.13%
FILE 114 - Simulation Wizardry 8961
32.55%
2604
75.31%
FILE 115 - Climbing Trees 7652
35.26%
2302
81.41%
FILE 116 - Unidirectional TSP 70143
25.34%
12675
72.62%
FILE 117 - The Postal Worker Rings Once 10034
49.74%
3963
89.38%
FILE 118 - Mutant Flatworld Explorers 28265
41.83%
10033
86.83%
FILE 119 - Greedy Gift Givers 44803
28.85%
13159
74.79%
FILE 120 - Stacks of Flapjacks 46817
41.05%
12608
87.13%
FILE 121 - Pipe Fitters 8406
43.10%
3410
87.30%
FILE 122 - Trees on the level 41853
29.41%
7520
74.57%
FILE 123 - Searching Quickly 14702
35.59%
4936
75.45%
FILE 124 - Following Orders 14908
39.17%
5076
78.72%
FILE 125 - Numbering Paths 11223
29.70%
3223
74.74%
FILE 126 - The Errant Physicist 4530
31.68%
1617
75.82%
FILE 127 - "Accordian" Patience 19137
40.01%
4827
81.56%
FILE 128 - Software CRC 20040
42.93%
4473
88.22%
FILE 129 - Krypton Factor 15792
39.84%
3135
84.34%
FILE 130 - Roman Roulette 9775
42.27%
3981
81.59%
FILE 131 - The Psychic Poker Player 4335
50.01%
1869
88.60%
FILE 132 - Bumpy Objects 4431
42.07%
1235
82.11%
FILE 133 - The Dole Queue 28259
49.58%
8034
88.98%
FILE 134 - Loglan-A Logical Language 3754
29.54%
1121
80.29%
FILE 135 - No Rectangles 3355
27.75%
1253
52.99%
FILE 136 - Ugly Numbers 124018
32.84%
30386
79.40%
FILE 137 - Polygons 4915
21.57%
1131
62.16%
FILE 138 - Street Numbers 21969
45.56%
8949
84.77%
FILE 139 - Telephone Tangles 10287
16.16%
1718
49.01%
FILE 140 - Bandwidth 16684
43.01%
3781
87.73%
FILE 141 - The Spot Game 8840
44.56%
2696
89.87%
FILE 142 - Mouse Clicks 7010
22.20%
2441
45.92%
FILE 143 - Orchard Trees 20628
12.58%
2667
44.69%
FILE 144 - Student Grants 7653
46.69%
3110
85.40%
FILE 145 - Gondwanaland Telecom 10583
25.58%
2889
74.77%
FILE 146 - ID Codes 35547
57.65%
16303
93.57%
FILE 147 - Dollars 64137
28.59%
12873
75.14%
FILE 148 - Anagram checker 5531
35.38%
1590
76.42%
FILE 149 - Forests 1315
45.78%
460
75.87%
FILE 150 - Double Time 2662
32.68%
863
66.28%
FILE 151 - Power Crisis 27130
60.54%
12046
93.18%
FILE 152 - Tree's a Crowd 12486
39.23%
3625
87.12%
FILE 153 - Permalex 7963
29.46%
2641
70.73%
FILE 154 - Recycling 7291
53.31%
3661
89.29%
FILE 155 - All Squares 7474
50.37%
3404
86.19%
FILE 156 - Ananagrams 35123
65.99%
11787
94.55%
FILE 157 - Route Finding 2142
32.63%
709
80.11%
FILE 158 - Calendar 3385
16.19%
776
57.35%
FILE 159 - Word Crosses 5634
24.41%
1820
60.71%
FILE 160 - Factors and Factorials 46468
31.80%
12898
83.02%
FILE 161 - Traffic Lights 10584
38.67%
3549
89.12%
FILE 162 - Beggar My Neighbour 6395
33.53%
1915
81.20%
FILE 163 - City Directions 1870
14.76%
353
58.36%
FILE 164 - String Computer 13944
31.50%
3066
75.34%
FILE 165 - Stamps 4436
41.21%
1488
80.91%
FILE 166 - Making Change 11688
39.17%
3188
86.10%
FILE 167 - The Sultan's Successors 28723
46.92%
8693
90.54%
FILE 168 - Theseus and the Minotaur 9585
33.72%
2087
73.60%
FILE 169 - Xenosemantics 2115
20.00%
332
64.76%
FILE 170 - Clock Patience 7334
45.50%
2738
90.36%
FILE 171 - Car Trialling 3480
14.22%
569
70.12%
FILE 172 - Calculator Language 2697
25.81%
779
69.70%
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 3776
39.62%
1193
72.25%
FILE 178 - Shuffling Patience 1193
38.89%
444
77.48%
FILE 179 - Code Breaking 2391
25.26%
641
72.85%
FILE 180 - Eeny Meeny 2663
22.57%
694
43.37%
FILE 181 - Hearts 1248
48.88%
615
84.07%
FILE 182 - Bonus Bonds 913
42.72%
444
79.05%
FILE 183 - Bit Maps 7215
26.63%
1965
76.39%
FILE 184 - Laser Lines 4902
44.55%
1393
85.28%
FILE 185 - Roman Numerals 3122
40.87%
1022
82.68%
FILE 186 - Trip Routing 4773
31.45%
1577
70.39%
FILE 187 - Transaction Processing 3794
37.61%
1401
79.37%
FILE 188 - Perfect Hash 5341
49.15%
1838
88.47%
FILE 189 - Pascal Program Lengths 1117
22.83%
320
62.50%
FILE 190 - Circle Through Three Points 18575
35.24%
5734
78.44%
FILE 191 - Intersection 30623
22.92%
6162
69.38%
FILE 192 - Synchronous Design 1179
30.53%
428
69.63%
FILE 193 - Graph Coloring 23832
28.64%
5781
70.85%
FILE 194 - Triangle 2733
16.39%
557
47.58%
FILE 195 - Anagram 44855
25.87%
10766
69.65%
FILE 196 - Spreadsheet 13362
25.55%
2292
76.18%
FILE 197 - Cube 1569
19.76%
384
46.09%
FILE 198 - Peter's Calculator 2978
19.58%
642
63.55%
FILE 199 - Partial differential equations 1031
22.21%
401
44.89%
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