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Browse Problems
Title Total Submissions / Solving % Total Users / Solving %
FILE 100 - The 3n + 1 problem 927725
26.63%
143261
73.82%
FILE 101 - The Blocks Problem 124117
25.70%
25048
70.19%
FILE 102 - Ecological Bin Packing 110610
39.39%
32294
87.26%
FILE 103 - Stacking Boxes 46063
26.67%
12324
61.21%
FILE 104 - Arbitrage 33657
25.19%
7144
67.99%
FILE 105 - The Skyline Problem 64766
26.02%
15595
69.20%
FILE 106 - Fermat vs. Pythagoras 29887
34.26%
7072
67.31%
FILE 107 - The Cat in the Hat 53174
21.69%
9199
68.26%
FILE 108 - Maximum Sum 73809
44.64%
23899
83.55%
FILE 109 - SCUD Busters 14152
32.28%
3758
68.31%
FILE 110 - Meta-Loopless Sorts 13056
32.05%
3609
66.11%
FILE 111 - History Grading 35871
45.59%
13601
77.86%
FILE 112 - Tree Summing 39472
28.30%
8146
78.19%
FILE 113 - Power of Cryptography 78211
40.98%
24878
89.11%
FILE 114 - Simulation Wizardry 8969
32.58%
2608
75.35%
FILE 115 - Climbing Trees 7660
35.29%
2308
81.41%
FILE 116 - Unidirectional TSP 70338
25.34%
12715
72.64%
FILE 117 - The Postal Worker Rings Once 10094
49.64%
3986
89.34%
FILE 118 - Mutant Flatworld Explorers 28563
41.88%
10107
86.83%
FILE 119 - Greedy Gift Givers 45009
28.93%
13196
74.83%
FILE 120 - Stacks of Flapjacks 47389
41.19%
12880
87.28%
FILE 121 - Pipe Fitters 8427
43.19%
3429
87.31%
FILE 122 - Trees on the level 42107
29.49%
7559
74.57%
FILE 123 - Searching Quickly 14724
35.62%
4951
75.46%
FILE 124 - Following Orders 14963
39.19%
5099
78.78%
FILE 125 - Numbering Paths 11250
29.72%
3232
74.78%
FILE 126 - The Errant Physicist 4531
31.69%
1618
75.83%
FILE 127 - "Accordian" Patience 19182
40.03%
4838
81.58%
FILE 128 - Software CRC 20134
42.88%
4498
87.99%
FILE 129 - Krypton Factor 15867
39.86%
3147
84.33%
FILE 130 - Roman Roulette 9793
42.23%
3988
81.52%
FILE 131 - The Psychic Poker Player 4339
50.01%
1873
88.52%
FILE 132 - Bumpy Objects 4436
42.11%
1238
82.15%
FILE 133 - The Dole Queue 28389
49.59%
8066
89.02%
FILE 134 - Loglan-A Logical Language 3755
29.56%
1122
80.30%
FILE 135 - No Rectangles 3363
27.86%
1260
53.17%
FILE 136 - Ugly Numbers 124598
32.88%
30520
79.43%
FILE 137 - Polygons 4926
21.56%
1133
62.05%
FILE 138 - Street Numbers 21982
45.56%
8956
84.77%
FILE 139 - Telephone Tangles 10307
16.14%
1725
48.87%
FILE 140 - Bandwidth 16776
43.00%
3798
87.68%
FILE 141 - The Spot Game 8868
44.59%
2710
89.89%
FILE 142 - Mouse Clicks 7013
22.23%
2442
45.95%
FILE 143 - Orchard Trees 20631
12.59%
2668
44.72%
FILE 144 - Student Grants 7692
46.68%
3127
85.42%
FILE 145 - Gondwanaland Telecom 10598
25.62%
2895
74.78%
FILE 146 - ID Codes 35690
57.67%
16346
93.56%
FILE 147 - Dollars 64935
28.76%
12947
75.26%
FILE 148 - Anagram checker 5542
35.38%
1595
76.30%
FILE 149 - Forests 1316
45.82%
461
75.92%
FILE 150 - Double Time 2680
32.57%
868
66.24%
FILE 151 - Power Crisis 27340
60.54%
12109
93.16%
FILE 152 - Tree's a Crowd 12517
39.23%
3636
87.13%
FILE 153 - Permalex 7965
29.48%
2642
70.74%
FILE 154 - Recycling 7320
53.27%
3674
89.22%
FILE 155 - All Squares 7487
50.42%
3414
86.20%
FILE 156 - Ananagrams 35325
65.98%
11847
94.53%
FILE 157 - Route Finding 2145
32.68%
711
80.17%
FILE 158 - Calendar 3406
16.12%
780
57.18%
FILE 159 - Word Crosses 5634
24.41%
1820
60.71%
FILE 160 - Factors and Factorials 46581
31.80%
12922
83.04%
FILE 161 - Traffic Lights 10635
38.70%
3570
89.08%
FILE 162 - Beggar My Neighbour 6419
33.51%
1920
81.20%
FILE 163 - City Directions 1873
14.74%
355
58.03%
FILE 164 - String Computer 13967
31.47%
3070
75.34%
FILE 165 - Stamps 4468
41.23%
1501
80.81%
FILE 166 - Making Change 11905
39.26%
3209
86.07%
FILE 167 - The Sultan's Successors 28858
46.85%
8722
90.47%
FILE 168 - Theseus and the Minotaur 9593
33.73%
2092
73.61%
FILE 169 - Xenosemantics 2120
19.95%
334
64.37%
FILE 170 - Clock Patience 7344
45.45%
2743
90.23%
FILE 171 - Car Trialling 3480
14.22%
569
70.12%
FILE 172 - Calculator Language 2701
25.81%
781
69.65%
FILE 173 - Network Wars 3081
16.91%
643
44.95%
FILE 174 - Strategy 1317
39.26%
552
79.71%
FILE 175 - Keywords 2362
17.57%
574
47.56%
FILE 176 - City Navigation 979
31.97%
307
80.78%
FILE 177 - Paper Folding 3781
39.65%
1194
72.28%
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 1251
48.92%
618
83.98%
FILE 182 - Bonus Bonds 913
42.72%
444
79.05%
FILE 183 - Bit Maps 7380
26.73%
1980
76.36%
FILE 184 - Laser Lines 4909
44.63%
1393
85.28%
FILE 185 - Roman Numerals 3135
40.83%
1025
82.73%
FILE 186 - Trip Routing 4786
31.45%
1583
70.31%
FILE 187 - Transaction Processing 3797
37.63%
1403
79.40%
FILE 188 - Perfect Hash 5358
49.18%
1850
88.38%
FILE 189 - Pascal Program Lengths 1117
22.83%
320
62.50%
FILE 190 - Circle Through Three Points 18670
35.27%
5741
78.47%
FILE 191 - Intersection 30661
22.92%
6166
69.36%
FILE 192 - Synchronous Design 1180
30.51%
429
69.46%
FILE 193 - Graph Coloring 23975
28.57%
5797
70.88%
FILE 194 - Triangle 2763
17.08%
559
48.48%
FILE 195 - Anagram 45333
25.86%
10789
69.64%
FILE 196 - Spreadsheet 13394
25.53%
2298
76.11%
FILE 197 - Cube 1571
19.80%
384
46.09%
FILE 198 - Peter's Calculator 2980
19.60%
644
63.51%
FILE 199 - Partial differential equations 1031
22.21%
401
44.89%
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