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Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
100 - The 3n + 1 problem | 954484 |
26.81%
|
147054 |
74.06%
|
|
|
|
101 - The Blocks Problem | 127554 |
26.19%
|
25692 |
70.48%
|
|
|
|
102 - Ecological Bin Packing | 111721 |
39.49%
|
32578 |
87.25%
|
|
|
103 - Stacking Boxes | 46572 |
26.90%
|
12475 |
61.45%
|
|
|
|
104 - Arbitrage | 34073 |
25.26%
|
7254 |
68.03%
|
|
|
|
105 - The Skyline Problem | 66276 |
26.16%
|
15866 |
69.34%
|
|
|
|
106 - Fermat vs. Pythagoras | 30339 |
34.13%
|
7162 |
67.38%
|
|
|
|
107 - The Cat in the Hat | 53795 |
21.78%
|
9306 |
68.28%
|
|
|
|
108 - Maximum Sum | 76390 |
44.74%
|
24330 |
83.63%
|
|
|
|
109 - SCUD Busters | 14349 |
32.43%
|
3813 |
68.50%
|
|
|
|
110 - Meta-Loopless Sorts | 13467 |
32.32%
|
3673 |
66.10%
|
|
|
|
111 - History Grading | 36903 |
45.31%
|
13739 |
77.87%
|
|
|
|
112 - Tree Summing | 40120 |
28.39%
|
8249 |
78.19%
|
|
|
|
113 - Power of Cryptography | 79731 |
41.02%
|
25309 |
89.08%
|
|
|
|
114 - Simulation Wizardry | 9142 |
32.49%
|
2648 |
75.11%
|
|
|
|
115 - Climbing Trees | 7797 |
35.22%
|
2345 |
81.19%
|
|
|
|
116 - Unidirectional TSP | 71530 |
25.58%
|
12929 |
72.87%
|
|
|
|
117 - The Postal Worker Rings Once | 10281 |
49.88%
|
4056 |
89.30%
|
|
|
|
118 - Mutant Flatworld Explorers | 31999 |
41.95%
|
10657 |
86.99%
|
|
|
|
119 - Greedy Gift Givers | 46066 |
29.09%
|
13363 |
74.98%
|
|
|
|
120 - Stacks of Flapjacks | 49076 |
41.59%
|
13514 |
87.49%
|
|
|
|
121 - Pipe Fitters | 8633 |
43.01%
|
3476 |
87.03%
|
|
|
|
122 - Trees on the level | 43902 |
29.81%
|
7793 |
74.85%
|
|
|
|
123 - Searching Quickly | 14899 |
35.82%
|
5027 |
75.47%
|
|
|
|
124 - Following Orders | 16019 |
39.43%
|
5229 |
78.94%
|
|
|
|
125 - Numbering Paths | 11448 |
29.78%
|
3273 |
74.79%
|
|
|
|
126 - The Errant Physicist | 4618 |
31.75%
|
1639 |
75.78%
|
|
|
|
127 - "Accordian" Patience | 19879 |
39.82%
|
4936 |
81.71%
|
|
|
|
128 - Software CRC | 20284 |
42.93%
|
4546 |
88.03%
|
|
|
|
129 - Krypton Factor | 16385 |
39.88%
|
3235 |
84.27%
|
|
|
|
130 - Roman Roulette | 10053 |
41.81%
|
4035 |
81.31%
|
|
|
|
131 - The Psychic Poker Player | 4430 |
50.09%
|
1903 |
88.33%
|
|
|
|
132 - Bumpy Objects | 4477 |
42.28%
|
1254 |
82.14%
|
|
|
|
133 - The Dole Queue | 29526 |
49.40%
|
8257 |
88.89%
|
|
|
|
134 - Loglan-A Logical Language | 3801 |
29.65%
|
1136 |
80.37%
|
|
|
|
135 - No Rectangles | 3406 |
28.13%
|
1278 |
53.29%
|
|
|
|
136 - Ugly Numbers | 129576 |
33.00%
|
31091 |
79.59%
|
|
|
|
137 - Polygons | 5090 |
21.85%
|
1157 |
62.32%
|
|
|
|
138 - Street Numbers | 22176 |
45.50%
|
9009 |
84.76%
|
|
|
|
139 - Telephone Tangles | 10451 |
16.15%
|
1742 |
49.14%
|
|
|
|
140 - Bandwidth | 17166 |
43.06%
|
3874 |
87.66%
|
|
|
|
141 - The Spot Game | 9040 |
44.89%
|
2764 |
89.91%
|
|
|
|
142 - Mouse Clicks | 7055 |
22.44%
|
2460 |
46.22%
|
|
|
|
143 - Orchard Trees | 20770 |
12.64%
|
2692 |
44.84%
|
|
|
|
144 - Student Grants | 7876 |
46.43%
|
3185 |
85.24%
|
|
|
|
145 - Gondwanaland Telecom | 10936 |
25.77%
|
2947 |
74.86%
|
|
|
|
146 - ID Codes | 36514 |
57.84%
|
16531 |
93.53%
|
|
|
|
147 - Dollars | 67411 |
29.10%
|
13186 |
75.57%
|
|
|
|
148 - Anagram checker | 5590 |
35.65%
|
1614 |
76.46%
|
|
|
|
149 - Forests | 1410 |
44.47%
|
481 |
75.47%
|
|
|
|
150 - Double Time | 2730 |
32.56%
|
889 |
65.92%
|
|
|
|
151 - Power Crisis | 28721 |
60.44%
|
12418 |
93.11%
|
|
|
|
152 - Tree's a Crowd | 12734 |
39.14%
|
3680 |
87.12%
|
|
|
|
153 - Permalex | 8095 |
29.57%
|
2678 |
70.72%
|
|
|
|
154 - Recycling | 7471 |
53.13%
|
3733 |
89.23%
|
|
|
|
155 - All Squares | 7566 |
50.40%
|
3440 |
86.19%
|
|
|
|
156 - Ananagrams | 36775 |
66.18%
|
12159 |
94.60%
|
|
|
|
157 - Route Finding | 2175 |
32.87%
|
724 |
80.11%
|
|
|
|
158 - Calendar | 3476 |
16.34%
|
796 |
57.41%
|
|
|
|
159 - Word Crosses | 5677 |
24.61%
|
1840 |
60.87%
|
|
|
|
160 - Factors and Factorials | 47499 |
31.88%
|
13048 |
83.14%
|
|
|
|
161 - Traffic Lights | 10892 |
38.63%
|
3648 |
88.90%
|
|
|
|
162 - Beggar My Neighbour | 6776 |
33.06%
|
1979 |
80.85%
|
|
|
|
163 - City Directions | 1903 |
14.82%
|
367 |
57.22%
|
|
|
|
164 - String Computer | 14338 |
31.55%
|
3101 |
75.43%
|
|
|
|
165 - Stamps | 4814 |
40.80%
|
1556 |
80.59%
|
|
|
|
166 - Making Change | 12556 |
39.58%
|
3296 |
86.29%
|
|
|
|
167 - The Sultan's Successors | 30613 |
46.86%
|
8881 |
90.52%
|
|
|
|
168 - Theseus and the Minotaur | 9805 |
34.11%
|
2131 |
73.96%
|
|
|
|
169 - Xenosemantics | 2154 |
19.87%
|
344 |
63.66%
|
|
|
|
170 - Clock Patience | 7461 |
45.30%
|
2774 |
90.23%
|
|
|
|
171 - Car Trialling | 3527 |
14.37%
|
584 |
69.69%
|
|
|
|
172 - Calculator Language | 2746 |
26.18%
|
795 |
69.69%
|
|
|
|
173 - Network Wars | 3134 |
17.52%
|
654 |
46.02%
|
|
|
|
174 - Strategy | 1340 |
39.40%
|
563 |
79.22%
|
|
|
|
175 - Keywords | 2410 |
17.59%
|
586 |
47.61%
|
|
|
|
176 - City Navigation | 994 |
31.69%
|
314 |
79.62%
|
|
|
|
177 - Paper Folding | 4155 |
40.58%
|
1245 |
72.93%
|
|
|
|
178 - Shuffling Patience | 1211 |
38.56%
|
457 |
75.93%
|
|
|
|
179 - Code Breaking | 2426 |
25.10%
|
651 |
72.35%
|
|
|
|
180 - Eeny Meeny | 2700 |
22.59%
|
703 |
43.39%
|
|
|
|
181 - Hearts | 1271 |
48.86%
|
628 |
83.76%
|
|
|
|
182 - Bonus Bonds | 930 |
42.69%
|
452 |
78.32%
|
|
|
|
183 - Bit Maps | 7825 |
26.98%
|
2034 |
76.40%
|
|
|
|
184 - Laser Lines | 5011 |
44.44%
|
1409 |
85.10%
|
|
|
|
185 - Roman Numerals | 3244 |
40.54%
|
1048 |
82.54%
|
|
|
|
186 - Trip Routing | 4812 |
31.46%
|
1594 |
70.20%
|
|
|
|
187 - Transaction Processing | 3836 |
37.64%
|
1416 |
79.31%
|
|
|
|
188 - Perfect Hash | 5485 |
49.08%
|
1885 |
88.49%
|
|
|
|
189 - Pascal Program Lengths | 1141 |
23.05%
|
332 |
61.75%
|
|
|
|
190 - Circle Through Three Points | 18803 |
35.35%
|
5772 |
78.52%
|
|
|
|
191 - Intersection | 31197 |
23.00%
|
6222 |
69.41%
|
|
|
|
192 - Synchronous Design | 1210 |
30.41%
|
436 |
69.27%
|
|
|
|
193 - Graph Coloring | 24755 |
28.53%
|
5920 |
71.10%
|
|
|
|
194 - Triangle | 2814 |
17.27%
|
565 |
48.14%
|
|
|
|
195 - Anagram | 46675 |
25.96%
|
10869 |
69.60%
|
|
|
|
196 - Spreadsheet | 13592 |
25.63%
|
2334 |
76.09%
|
|
|
|
197 - Cube | 1610 |
19.94%
|
391 |
46.29%
|
|
|
|
198 - Peter's Calculator | 3007 |
19.85%
|
655 |
63.82%
|
|
|
|
199 - Partial differential equations | 1043 |
22.53%
|
409 |
44.99%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |