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Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
100 - The 3n + 1 problem | 943353 |
26.69%
|
145439 |
73.95%
|
|
|
|
101 - The Blocks Problem | 126115 |
25.94%
|
25436 |
70.33%
|
|
|
|
102 - Ecological Bin Packing | 111219 |
39.41%
|
32463 |
87.24%
|
|
|
103 - Stacking Boxes | 46322 |
26.78%
|
12399 |
61.35%
|
|
|
|
104 - Arbitrage | 33858 |
25.22%
|
7193 |
68.02%
|
|
|
|
105 - The Skyline Problem | 65688 |
26.08%
|
15755 |
69.26%
|
|
|
|
106 - Fermat vs. Pythagoras | 30158 |
34.16%
|
7114 |
67.39%
|
|
|
|
107 - The Cat in the Hat | 53412 |
21.73%
|
9249 |
68.28%
|
|
|
|
108 - Maximum Sum | 75147 |
44.66%
|
24135 |
83.60%
|
|
|
|
109 - SCUD Busters | 14263 |
32.38%
|
3786 |
68.41%
|
|
|
|
110 - Meta-Loopless Sorts | 13240 |
32.14%
|
3650 |
66.08%
|
|
|
|
111 - History Grading | 36233 |
45.51%
|
13665 |
77.87%
|
|
|
|
112 - Tree Summing | 39683 |
28.30%
|
8184 |
78.15%
|
|
|
|
113 - Power of Cryptography | 79140 |
41.00%
|
25130 |
89.10%
|
|
|
|
114 - Simulation Wizardry | 9051 |
32.56%
|
2626 |
75.29%
|
|
|
|
115 - Climbing Trees | 7735 |
35.22%
|
2326 |
81.30%
|
|
|
|
116 - Unidirectional TSP | 71177 |
25.48%
|
12844 |
72.78%
|
|
|
|
117 - The Postal Worker Rings Once | 10166 |
49.72%
|
4015 |
89.29%
|
|
|
|
118 - Mutant Flatworld Explorers | 30251 |
41.80%
|
10391 |
86.86%
|
|
|
|
119 - Greedy Gift Givers | 45622 |
28.95%
|
13288 |
74.88%
|
|
|
|
120 - Stacks of Flapjacks | 48203 |
41.31%
|
13156 |
87.35%
|
|
|
|
121 - Pipe Fitters | 8552 |
43.02%
|
3456 |
87.18%
|
|
|
|
122 - Trees on the level | 43119 |
29.66%
|
7686 |
74.72%
|
|
|
|
123 - Searching Quickly | 14841 |
35.72%
|
5000 |
75.46%
|
|
|
|
124 - Following Orders | 15566 |
39.20%
|
5175 |
78.84%
|
|
|
|
125 - Numbering Paths | 11340 |
29.73%
|
3249 |
74.76%
|
|
|
|
126 - The Errant Physicist | 4564 |
31.81%
|
1626 |
75.89%
|
|
|
|
127 - "Accordian" Patience | 19481 |
40.03%
|
4891 |
81.64%
|
|
|
|
128 - Software CRC | 20219 |
42.89%
|
4522 |
88.01%
|
|
|
|
129 - Krypton Factor | 16257 |
39.84%
|
3200 |
84.31%
|
|
|
|
130 - Roman Roulette | 9879 |
42.15%
|
4010 |
81.42%
|
|
|
|
131 - The Psychic Poker Player | 4364 |
50.07%
|
1884 |
88.43%
|
|
|
|
132 - Bumpy Objects | 4450 |
42.22%
|
1245 |
82.17%
|
|
|
|
133 - The Dole Queue | 29098 |
49.52%
|
8181 |
88.95%
|
|
|
|
134 - Loglan-A Logical Language | 3770 |
29.52%
|
1127 |
80.21%
|
|
|
|
135 - No Rectangles | 3375 |
27.88%
|
1267 |
53.20%
|
|
|
|
136 - Ugly Numbers | 127509 |
32.94%
|
30872 |
79.53%
|
|
|
|
137 - Polygons | 5044 |
21.77%
|
1146 |
62.22%
|
|
|
|
138 - Street Numbers | 22076 |
45.54%
|
8984 |
84.77%
|
|
|
|
139 - Telephone Tangles | 10365 |
16.16%
|
1734 |
49.02%
|
|
|
|
140 - Bandwidth | 17015 |
43.10%
|
3847 |
87.70%
|
|
|
|
141 - The Spot Game | 8960 |
44.71%
|
2732 |
89.93%
|
|
|
|
142 - Mouse Clicks | 7027 |
22.31%
|
2449 |
46.06%
|
|
|
|
143 - Orchard Trees | 20720 |
12.61%
|
2682 |
44.78%
|
|
|
|
144 - Student Grants | 7806 |
46.57%
|
3163 |
85.39%
|
|
|
|
145 - Gondwanaland Telecom | 10736 |
25.62%
|
2912 |
74.83%
|
|
|
|
146 - ID Codes | 36089 |
57.71%
|
16432 |
93.55%
|
|
|
|
147 - Dollars | 66391 |
28.90%
|
13075 |
75.44%
|
|
|
|
148 - Anagram checker | 5564 |
35.53%
|
1605 |
76.39%
|
|
|
|
149 - Forests | 1345 |
45.58%
|
470 |
75.74%
|
|
|
|
150 - Double Time | 2703 |
32.67%
|
876 |
66.44%
|
|
|
|
151 - Power Crisis | 28050 |
60.61%
|
12266 |
93.18%
|
|
|
|
152 - Tree's a Crowd | 12695 |
39.10%
|
3667 |
87.18%
|
|
|
|
153 - Permalex | 8058 |
29.50%
|
2667 |
70.68%
|
|
|
|
154 - Recycling | 7409 |
53.11%
|
3704 |
89.20%
|
|
|
|
155 - All Squares | 7539 |
50.39%
|
3429 |
86.26%
|
|
|
|
156 - Ananagrams | 36104 |
66.20%
|
12029 |
94.55%
|
|
|
|
157 - Route Finding | 2153 |
32.88%
|
716 |
80.45%
|
|
|
|
158 - Calendar | 3446 |
16.13%
|
788 |
57.36%
|
|
|
|
159 - Word Crosses | 5652 |
24.52%
|
1828 |
60.89%
|
|
|
|
160 - Factors and Factorials | 46980 |
31.85%
|
12990 |
83.09%
|
|
|
|
161 - Traffic Lights | 10739 |
38.74%
|
3606 |
89.07%
|
|
|
|
162 - Beggar My Neighbour | 6635 |
33.25%
|
1953 |
81.21%
|
|
|
|
163 - City Directions | 1887 |
14.68%
|
359 |
57.66%
|
|
|
|
164 - String Computer | 14062 |
31.49%
|
3083 |
75.45%
|
|
|
|
165 - Stamps | 4696 |
40.65%
|
1527 |
80.81%
|
|
|
|
166 - Making Change | 12251 |
39.34%
|
3241 |
86.18%
|
|
|
|
167 - The Sultan's Successors | 29714 |
46.60%
|
8811 |
90.51%
|
|
|
|
168 - Theseus and the Minotaur | 9733 |
33.99%
|
2117 |
73.83%
|
|
|
|
169 - Xenosemantics | 2130 |
20.05%
|
337 |
64.69%
|
|
|
|
170 - Clock Patience | 7426 |
45.27%
|
2762 |
90.26%
|
|
|
|
171 - Car Trialling | 3492 |
14.29%
|
577 |
69.84%
|
|
|
|
172 - Calculator Language | 2709 |
25.99%
|
785 |
69.94%
|
|
|
|
173 - Network Wars | 3093 |
17.04%
|
647 |
45.13%
|
|
|
|
174 - Strategy | 1325 |
39.40%
|
556 |
79.68%
|
|
|
|
175 - Keywords | 2374 |
17.65%
|
579 |
47.84%
|
|
|
|
176 - City Navigation | 980 |
32.04%
|
308 |
80.84%
|
|
|
|
177 - Paper Folding | 3982 |
40.26%
|
1222 |
72.75%
|
|
|
|
178 - Shuffling Patience | 1193 |
38.89%
|
444 |
77.48%
|
|
|
|
179 - Code Breaking | 2396 |
25.29%
|
644 |
72.83%
|
|
|
|
180 - Eeny Meeny | 2677 |
22.64%
|
696 |
43.53%
|
|
|
|
181 - Hearts | 1261 |
48.93%
|
623 |
83.95%
|
|
|
|
182 - Bonus Bonds | 914 |
42.78%
|
445 |
79.10%
|
|
|
|
183 - Bit Maps | 7574 |
26.70%
|
2014 |
76.37%
|
|
|
|
184 - Laser Lines | 4972 |
44.51%
|
1399 |
85.35%
|
|
|
|
185 - Roman Numerals | 3212 |
40.63%
|
1035 |
82.80%
|
|
|
|
186 - Trip Routing | 4796 |
31.51%
|
1586 |
70.37%
|
|
|
|
187 - Transaction Processing | 3813 |
37.66%
|
1410 |
79.43%
|
|
|
|
188 - Perfect Hash | 5454 |
48.95%
|
1869 |
88.44%
|
|
|
|
189 - Pascal Program Lengths | 1129 |
22.85%
|
326 |
61.96%
|
|
|
|
190 - Circle Through Three Points | 18745 |
35.32%
|
5762 |
78.51%
|
|
|
|
191 - Intersection | 30933 |
22.94%
|
6204 |
69.41%
|
|
|
|
192 - Synchronous Design | 1200 |
30.33%
|
431 |
69.61%
|
|
|
|
193 - Graph Coloring | 24486 |
28.42%
|
5854 |
70.91%
|
|
|
|
194 - Triangle | 2766 |
17.14%
|
560 |
48.39%
|
|
|
|
195 - Anagram | 46090 |
25.88%
|
10837 |
69.62%
|
|
|
|
196 - Spreadsheet | 13514 |
25.60%
|
2314 |
76.10%
|
|
|
|
197 - Cube | 1576 |
19.80%
|
386 |
46.11%
|
|
|
|
198 - Peter's Calculator | 2996 |
19.86%
|
650 |
64.00%
|
|
|
|
199 - Partial differential equations | 1037 |
22.47%
|
404 |
45.05%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |