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Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
100 - The 3n + 1 problem | 948876 |
26.75%
|
146253 |
74.00%
|
|
|
|
101 - The Blocks Problem | 127001 |
26.09%
|
25608 |
70.44%
|
|
|
|
102 - Ecological Bin Packing | 111455 |
39.43%
|
32524 |
87.24%
|
|
|
103 - Stacking Boxes | 46487 |
26.84%
|
12447 |
61.40%
|
|
|
|
104 - Arbitrage | 34017 |
25.23%
|
7239 |
67.99%
|
|
|
|
105 - The Skyline Problem | 66019 |
26.10%
|
15816 |
69.27%
|
|
|
|
106 - Fermat vs. Pythagoras | 30270 |
34.12%
|
7143 |
67.38%
|
|
|
|
107 - The Cat in the Hat | 53685 |
21.74%
|
9285 |
68.26%
|
|
|
|
108 - Maximum Sum | 75855 |
44.68%
|
24254 |
83.60%
|
|
|
|
109 - SCUD Busters | 14322 |
32.38%
|
3805 |
68.46%
|
|
|
|
110 - Meta-Loopless Sorts | 13439 |
32.26%
|
3663 |
66.07%
|
|
|
|
111 - History Grading | 36732 |
45.28%
|
13708 |
77.85%
|
|
|
|
112 - Tree Summing | 39803 |
28.36%
|
8217 |
78.18%
|
|
|
|
113 - Power of Cryptography | 79603 |
41.00%
|
25270 |
89.07%
|
|
|
|
114 - Simulation Wizardry | 9118 |
32.42%
|
2639 |
75.18%
|
|
|
|
115 - Climbing Trees | 7762 |
35.24%
|
2338 |
81.22%
|
|
|
|
116 - Unidirectional TSP | 71375 |
25.54%
|
12897 |
72.83%
|
|
|
|
117 - The Postal Worker Rings Once | 10219 |
49.77%
|
4043 |
89.29%
|
|
|
|
118 - Mutant Flatworld Explorers | 31066 |
41.68%
|
10506 |
86.88%
|
|
|
|
119 - Greedy Gift Givers | 45816 |
28.97%
|
13335 |
74.95%
|
|
|
|
120 - Stacks of Flapjacks | 48644 |
41.37%
|
13302 |
87.35%
|
|
|
|
121 - Pipe Fitters | 8611 |
42.98%
|
3471 |
87.04%
|
|
|
|
122 - Trees on the level | 43486 |
29.73%
|
7747 |
74.78%
|
|
|
|
123 - Searching Quickly | 14875 |
35.76%
|
5013 |
75.44%
|
|
|
|
124 - Following Orders | 15825 |
39.27%
|
5208 |
78.90%
|
|
|
|
125 - Numbering Paths | 11418 |
29.72%
|
3265 |
74.79%
|
|
|
|
126 - The Errant Physicist | 4597 |
31.69%
|
1634 |
75.76%
|
|
|
|
127 - "Accordian" Patience | 19765 |
39.78%
|
4923 |
81.68%
|
|
|
|
128 - Software CRC | 20255 |
42.92%
|
4539 |
88.04%
|
|
|
|
129 - Krypton Factor | 16328 |
39.88%
|
3225 |
84.25%
|
|
|
|
130 - Roman Roulette | 9998 |
41.90%
|
4025 |
81.34%
|
|
|
|
131 - The Psychic Poker Player | 4382 |
50.11%
|
1894 |
88.38%
|
|
|
|
132 - Bumpy Objects | 4465 |
42.17%
|
1250 |
82.08%
|
|
|
|
133 - The Dole Queue | 29348 |
49.41%
|
8228 |
88.89%
|
|
|
|
134 - Loglan-A Logical Language | 3785 |
29.59%
|
1132 |
80.21%
|
|
|
|
135 - No Rectangles | 3397 |
27.97%
|
1273 |
53.10%
|
|
|
|
136 - Ugly Numbers | 128763 |
32.97%
|
31033 |
79.57%
|
|
|
|
137 - Polygons | 5066 |
21.77%
|
1152 |
62.15%
|
|
|
|
138 - Street Numbers | 22154 |
45.46%
|
9001 |
84.76%
|
|
|
|
139 - Telephone Tangles | 10374 |
16.18%
|
1738 |
49.08%
|
|
|
|
140 - Bandwidth | 17114 |
43.03%
|
3867 |
87.64%
|
|
|
|
141 - The Spot Game | 8986 |
44.79%
|
2751 |
89.89%
|
|
|
|
142 - Mouse Clicks | 7041 |
22.34%
|
2454 |
46.13%
|
|
|
|
143 - Orchard Trees | 20733 |
12.61%
|
2686 |
44.79%
|
|
|
|
144 - Student Grants | 7851 |
46.47%
|
3180 |
85.25%
|
|
|
|
145 - Gondwanaland Telecom | 10813 |
25.61%
|
2922 |
74.78%
|
|
|
|
146 - ID Codes | 36362 |
57.78%
|
16502 |
93.54%
|
|
|
|
147 - Dollars | 66992 |
29.00%
|
13136 |
75.50%
|
|
|
|
148 - Anagram checker | 5573 |
35.60%
|
1610 |
76.40%
|
|
|
|
149 - Forests | 1361 |
45.26%
|
476 |
75.00%
|
|
|
|
150 - Double Time | 2715 |
32.60%
|
885 |
65.99%
|
|
|
|
151 - Power Crisis | 28500 |
60.38%
|
12365 |
93.09%
|
|
|
|
152 - Tree's a Crowd | 12715 |
39.09%
|
3674 |
87.13%
|
|
|
|
153 - Permalex | 8065 |
29.52%
|
2671 |
70.69%
|
|
|
|
154 - Recycling | 7423 |
53.13%
|
3713 |
89.20%
|
|
|
|
155 - All Squares | 7554 |
50.36%
|
3436 |
86.20%
|
|
|
|
156 - Ananagrams | 36640 |
66.14%
|
12129 |
94.57%
|
|
|
|
157 - Route Finding | 2165 |
32.79%
|
721 |
80.17%
|
|
|
|
158 - Calendar | 3458 |
16.19%
|
793 |
57.25%
|
|
|
|
159 - Word Crosses | 5669 |
24.57%
|
1836 |
60.89%
|
|
|
|
160 - Factors and Factorials | 47324 |
31.87%
|
13025 |
83.12%
|
|
|
|
161 - Traffic Lights | 10857 |
38.59%
|
3634 |
88.94%
|
|
|
|
162 - Beggar My Neighbour | 6750 |
33.02%
|
1970 |
80.91%
|
|
|
|
163 - City Directions | 1894 |
14.78%
|
364 |
57.42%
|
|
|
|
164 - String Computer | 14088 |
31.49%
|
3091 |
75.41%
|
|
|
|
165 - Stamps | 4776 |
40.58%
|
1545 |
80.45%
|
|
|
|
166 - Making Change | 12458 |
39.44%
|
3278 |
86.21%
|
|
|
|
167 - The Sultan's Successors | 30221 |
46.64%
|
8858 |
90.53%
|
|
|
|
168 - Theseus and the Minotaur | 9751 |
34.01%
|
2123 |
73.86%
|
|
|
|
169 - Xenosemantics | 2140 |
19.95%
|
342 |
63.74%
|
|
|
|
170 - Clock Patience | 7444 |
45.28%
|
2772 |
90.22%
|
|
|
|
171 - Car Trialling | 3511 |
14.38%
|
581 |
69.71%
|
|
|
|
172 - Calculator Language | 2723 |
26.07%
|
790 |
69.87%
|
|
|
|
173 - Network Wars | 3129 |
17.48%
|
652 |
46.01%
|
|
|
|
174 - Strategy | 1334 |
39.43%
|
561 |
79.32%
|
|
|
|
175 - Keywords | 2405 |
17.63%
|
585 |
47.69%
|
|
|
|
176 - City Navigation | 986 |
31.85%
|
311 |
80.06%
|
|
|
|
177 - Paper Folding | 4123 |
40.36%
|
1230 |
72.68%
|
|
|
|
178 - Shuffling Patience | 1207 |
38.69%
|
455 |
76.26%
|
|
|
|
179 - Code Breaking | 2401 |
25.24%
|
647 |
72.49%
|
|
|
|
180 - Eeny Meeny | 2688 |
22.54%
|
700 |
43.29%
|
|
|
|
181 - Hearts | 1264 |
48.89%
|
626 |
83.71%
|
|
|
|
182 - Bonus Bonds | 924 |
42.75%
|
449 |
78.62%
|
|
|
|
183 - Bit Maps | 7668 |
26.77%
|
2025 |
76.30%
|
|
|
|
184 - Laser Lines | 4994 |
44.37%
|
1404 |
85.11%
|
|
|
|
185 - Roman Numerals | 3234 |
40.54%
|
1043 |
82.65%
|
|
|
|
186 - Trip Routing | 4800 |
31.48%
|
1589 |
70.23%
|
|
|
|
187 - Transaction Processing | 3827 |
37.52%
|
1413 |
79.26%
|
|
|
|
188 - Perfect Hash | 5470 |
48.99%
|
1876 |
88.43%
|
|
|
|
189 - Pascal Program Lengths | 1136 |
22.71%
|
329 |
61.40%
|
|
|
|
190 - Circle Through Three Points | 18764 |
35.33%
|
5767 |
78.50%
|
|
|
|
191 - Intersection | 31124 |
22.98%
|
6215 |
69.40%
|
|
|
|
192 - Synchronous Design | 1202 |
30.28%
|
433 |
69.28%
|
|
|
|
193 - Graph Coloring | 24601 |
28.46%
|
5882 |
70.98%
|
|
|
|
194 - Triangle | 2770 |
17.11%
|
562 |
48.22%
|
|
|
|
195 - Anagram | 46419 |
25.91%
|
10856 |
69.60%
|
|
|
|
196 - Spreadsheet | 13575 |
25.59%
|
2329 |
76.04%
|
|
|
|
197 - Cube | 1602 |
19.79%
|
388 |
46.13%
|
|
|
|
198 - Peter's Calculator | 3001 |
19.83%
|
652 |
63.80%
|
|
|
|
199 - Partial differential equations | 1039 |
22.43%
|
406 |
44.83%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |