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Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
100 - The 3n + 1 problem | 948498 |
26.75%
|
146172 |
73.99%
|
|
|
|
101 - The Blocks Problem | 126967 |
26.08%
|
25598 |
70.44%
|
|
|
|
102 - Ecological Bin Packing | 111441 |
39.43%
|
32518 |
87.24%
|
|
|
103 - Stacking Boxes | 46456 |
26.81%
|
12440 |
61.37%
|
|
|
|
104 - Arbitrage | 34016 |
25.23%
|
7238 |
68.00%
|
|
|
|
105 - The Skyline Problem | 66002 |
26.10%
|
15812 |
69.26%
|
|
|
|
106 - Fermat vs. Pythagoras | 30265 |
34.12%
|
7140 |
67.39%
|
|
|
|
107 - The Cat in the Hat | 53680 |
21.74%
|
9283 |
68.28%
|
|
|
|
108 - Maximum Sum | 75803 |
44.67%
|
24250 |
83.60%
|
|
|
|
109 - SCUD Busters | 14318 |
32.37%
|
3802 |
68.46%
|
|
|
|
110 - Meta-Loopless Sorts | 13438 |
32.25%
|
3662 |
66.06%
|
|
|
|
111 - History Grading | 36713 |
45.29%
|
13705 |
77.87%
|
|
|
|
112 - Tree Summing | 39788 |
28.34%
|
8206 |
78.17%
|
|
|
|
113 - Power of Cryptography | 79585 |
41.00%
|
25264 |
89.08%
|
|
|
|
114 - Simulation Wizardry | 9115 |
32.43%
|
2637 |
75.24%
|
|
|
|
115 - Climbing Trees | 7760 |
35.22%
|
2337 |
81.22%
|
|
|
|
116 - Unidirectional TSP | 71351 |
25.52%
|
12890 |
72.82%
|
|
|
|
117 - The Postal Worker Rings Once | 10217 |
49.77%
|
4042 |
89.29%
|
|
|
|
118 - Mutant Flatworld Explorers | 30945 |
41.68%
|
10490 |
86.86%
|
|
|
|
119 - Greedy Gift Givers | 45771 |
28.97%
|
13330 |
74.94%
|
|
|
|
120 - Stacks of Flapjacks | 48637 |
41.37%
|
13299 |
87.35%
|
|
|
|
121 - Pipe Fitters | 8607 |
43.00%
|
3470 |
87.06%
|
|
|
|
122 - Trees on the level | 43474 |
29.72%
|
7744 |
74.77%
|
|
|
|
123 - Searching Quickly | 14874 |
35.75%
|
5013 |
75.44%
|
|
|
|
124 - Following Orders | 15824 |
39.26%
|
5207 |
78.89%
|
|
|
|
125 - Numbering Paths | 11404 |
29.74%
|
3264 |
74.79%
|
|
|
|
126 - The Errant Physicist | 4597 |
31.69%
|
1634 |
75.76%
|
|
|
|
127 - "Accordian" Patience | 19765 |
39.78%
|
4923 |
81.68%
|
|
|
|
128 - Software CRC | 20254 |
42.92%
|
4538 |
88.03%
|
|
|
|
129 - Krypton Factor | 16325 |
39.87%
|
3224 |
84.24%
|
|
|
|
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 | 29328 |
49.43%
|
8226 |
88.90%
|
|
|
|
134 - Loglan-A Logical Language | 3785 |
29.59%
|
1132 |
80.21%
|
|
|
|
135 - No Rectangles | 3397 |
27.97%
|
1273 |
53.10%
|
|
|
|
136 - Ugly Numbers | 128690 |
32.98%
|
31026 |
79.57%
|
|
|
|
137 - Polygons | 5063 |
21.77%
|
1151 |
62.12%
|
|
|
|
138 - Street Numbers | 22153 |
45.46%
|
9000 |
84.76%
|
|
|
|
139 - Telephone Tangles | 10373 |
16.18%
|
1738 |
49.08%
|
|
|
|
140 - Bandwidth | 17108 |
43.04%
|
3866 |
87.64%
|
|
|
|
141 - The Spot Game | 8982 |
44.79%
|
2748 |
89.92%
|
|
|
|
142 - Mouse Clicks | 7041 |
22.34%
|
2454 |
46.13%
|
|
|
|
143 - Orchard Trees | 20733 |
12.61%
|
2686 |
44.79%
|
|
|
|
144 - Student Grants | 7847 |
46.45%
|
3177 |
85.24%
|
|
|
|
145 - Gondwanaland Telecom | 10812 |
25.61%
|
2922 |
74.78%
|
|
|
|
146 - ID Codes | 36354 |
57.77%
|
16496 |
93.54%
|
|
|
|
147 - Dollars | 66977 |
29.00%
|
13134 |
75.50%
|
|
|
|
148 - Anagram checker | 5573 |
35.60%
|
1610 |
76.40%
|
|
|
|
149 - Forests | 1359 |
45.33%
|
475 |
75.16%
|
|
|
|
150 - Double Time | 2714 |
32.61%
|
884 |
66.06%
|
|
|
|
151 - Power Crisis | 28478 |
60.38%
|
12357 |
93.11%
|
|
|
|
152 - Tree's a Crowd | 12715 |
39.09%
|
3674 |
87.13%
|
|
|
|
153 - Permalex | 8065 |
29.52%
|
2671 |
70.69%
|
|
|
|
154 - Recycling | 7422 |
53.13%
|
3712 |
89.20%
|
|
|
|
155 - All Squares | 7554 |
50.36%
|
3436 |
86.20%
|
|
|
|
156 - Ananagrams | 36352 |
66.25%
|
12096 |
94.56%
|
|
|
|
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 | 47323 |
31.87%
|
13024 |
83.12%
|
|
|
|
161 - Traffic Lights | 10856 |
38.59%
|
3633 |
88.93%
|
|
|
|
162 - Beggar My Neighbour | 6744 |
33.05%
|
1970 |
80.91%
|
|
|
|
163 - City Directions | 1894 |
14.78%
|
364 |
57.42%
|
|
|
|
164 - String Computer | 14088 |
31.49%
|
3091 |
75.41%
|
|
|
|
165 - Stamps | 4774 |
40.59%
|
1544 |
80.51%
|
|
|
|
166 - Making Change | 12457 |
39.44%
|
3277 |
86.21%
|
|
|
|
167 - The Sultan's Successors | 30210 |
46.63%
|
8852 |
90.52%
|
|
|
|
168 - Theseus and the Minotaur | 9751 |
34.01%
|
2123 |
73.86%
|
|
|
|
169 - Xenosemantics | 2140 |
19.95%
|
342 |
63.74%
|
|
|
|
170 - Clock Patience | 7443 |
45.28%
|
2771 |
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 | 7650 |
26.72%
|
2025 |
76.30%
|
|
|
|
184 - Laser Lines | 4992 |
44.39%
|
1403 |
85.17%
|
|
|
|
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 | 5469 |
48.99%
|
1875 |
88.43%
|
|
|
|
189 - Pascal Program Lengths | 1134 |
22.75%
|
328 |
61.59%
|
|
|
|
190 - Circle Through Three Points | 18760 |
35.32%
|
5767 |
78.50%
|
|
|
|
191 - Intersection | 31100 |
22.96%
|
6214 |
69.39%
|
|
|
|
192 - Synchronous Design | 1202 |
30.28%
|
433 |
69.28%
|
|
|
|
193 - Graph Coloring | 24584 |
28.44%
|
5875 |
70.94%
|
|
|
|
194 - Triangle | 2768 |
17.12%
|
562 |
48.22%
|
|
|
|
195 - Anagram | 46412 |
25.90%
|
10855 |
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 | |