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Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
|
100 - The 3n + 1 problem | 893390 |
26.54%
|
137260 |
73.60%
|
|
|
|
101 - The Blocks Problem | 119161 |
25.21%
|
24007 |
69.98%
|
|
|
|
102 - Ecological Bin Packing | 108445 |
39.29%
|
31557 |
87.27%
|
|
|
103 - Stacking Boxes | 45233 |
26.33%
|
12009 |
60.80%
|
|
|
|
104 - Arbitrage | 32744 |
24.99%
|
6888 |
68.48%
|
|
|
|
105 - The Skyline Problem | 62116 |
25.89%
|
15037 |
68.80%
|
|
|
|
106 - Fermat vs. Pythagoras | 29586 |
34.32%
|
6956 |
67.55%
|
|
|
|
107 - The Cat in the Hat | 52586 |
21.48%
|
9050 |
68.11%
|
|
|
|
108 - Maximum Sum | 69761 |
44.48%
|
23011 |
83.46%
|
|
|
|
109 - SCUD Busters | 13822 |
32.35%
|
3625 |
69.43%
|
|
|
|
110 - Meta-Loopless Sorts | 12364 |
31.18%
|
3408 |
64.94%
|
|
|
|
111 - History Grading | 34855 |
45.29%
|
13233 |
77.71%
|
|
|
|
112 - Tree Summing | 38926 |
27.97%
|
7945 |
77.99%
|
|
|
|
113 - Power of Cryptography | 74520 |
40.89%
|
23743 |
89.12%
|
|
|
|
114 - Simulation Wizardry | 8890 |
32.36%
|
2560 |
75.23%
|
|
|
|
115 - Climbing Trees | 7565 |
35.00%
|
2249 |
81.28%
|
|
|
|
116 - Unidirectional TSP | 65940 |
24.58%
|
11875 |
71.56%
|
|
|
|
117 - The Postal Worker Rings Once | 9715 |
49.55%
|
3812 |
89.66%
|
|
|
|
118 - Mutant Flatworld Explorers | 25725 |
40.96%
|
9383 |
86.56%
|
|
|
|
119 - Greedy Gift Givers | 43346 |
28.74%
|
12774 |
74.50%
|
|
|
|
120 - Stacks of Flapjacks | 45070 |
40.87%
|
12107 |
87.15%
|
|
|
|
121 - Pipe Fitters | 8180 |
42.56%
|
3269 |
87.03%
|
|
|
|
122 - Trees on the level | 39174 |
29.20%
|
7140 |
74.45%
|
|
|
|
123 - Searching Quickly | 14451 |
35.24%
|
4805 |
75.34%
|
|
|
|
124 - Following Orders | 14208 |
39.02%
|
4897 |
78.31%
|
|
|
|
125 - Numbering Paths | 10903 |
29.08%
|
3087 |
74.08%
|
|
|
|
126 - The Errant Physicist | 4504 |
31.44%
|
1598 |
75.72%
|
|
|
|
127 - "Accordian" Patience | 18633 |
39.67%
|
4670 |
81.33%
|
|
|
|
128 - Software CRC | 19828 |
42.83%
|
4352 |
88.69%
|
|
|
|
129 - Krypton Factor | 14457 |
39.31%
|
2983 |
84.21%
|
|
|
|
130 - Roman Roulette | 9623 |
42.27%
|
3922 |
81.77%
|
|
|
|
131 - The Psychic Poker Player | 4168 |
50.65%
|
1839 |
88.69%
|
|
|
|
132 - Bumpy Objects | 4365 |
41.33%
|
1173 |
81.59%
|
|
|
|
133 - The Dole Queue | 26473 |
49.37%
|
7645 |
88.84%
|
|
|
|
134 - Loglan-A Logical Language | 3716 |
29.09%
|
1091 |
80.20%
|
|
|
|
135 - No Rectangles | 3267 |
27.00%
|
1195 |
51.97%
|
|
|
|
136 - Ugly Numbers | 118222 |
32.64%
|
29322 |
79.12%
|
|
|
|
137 - Polygons | 4852 |
21.37%
|
1121 |
62.00%
|
|
|
|
138 - Street Numbers | 21597 |
45.61%
|
8801 |
84.77%
|
|
|
|
139 - Telephone Tangles | 10183 |
16.19%
|
1662 |
50.06%
|
|
|
|
140 - Bandwidth | 15929 |
43.22%
|
3595 |
88.93%
|
|
|
|
141 - The Spot Game | 8579 |
44.00%
|
2588 |
89.88%
|
|
|
|
142 - Mouse Clicks | 6961 |
22.17%
|
2426 |
45.75%
|
|
|
|
143 - Orchard Trees | 20495 |
12.43%
|
2614 |
43.92%
|
|
|
|
144 - Student Grants | 7435 |
46.43%
|
3000 |
85.17%
|
|
|
|
145 - Gondwanaland Telecom | 10284 |
24.94%
|
2790 |
74.19%
|
|
|
|
146 - ID Codes | 34643 |
57.37%
|
15927 |
93.55%
|
|
|
|
147 - Dollars | 61760 |
28.36%
|
12540 |
74.82%
|
|
|
|
148 - Anagram checker | 5464 |
35.23%
|
1543 |
76.99%
|
|
|
|
149 - Forests | 1267 |
44.83%
|
422 |
75.36%
|
|
|
|
150 - Double Time | 2601 |
31.45%
|
813 |
64.58%
|
|
|
|
151 - Power Crisis | 25848 |
60.36%
|
11608 |
93.05%
|
|
|
|
152 - Tree's a Crowd | 12314 |
39.13%
|
3550 |
86.96%
|
|
|
|
153 - Permalex | 7881 |
29.04%
|
2594 |
70.35%
|
|
|
|
154 - Recycling | 7065 |
53.55%
|
3548 |
89.74%
|
|
|
|
155 - All Squares | 7280 |
49.85%
|
3316 |
86.04%
|
|
|
|
156 - Ananagrams | 33198 |
65.40%
|
11181 |
94.44%
|
|
|
|
157 - Route Finding | 2108 |
31.69%
|
683 |
79.36%
|
|
|
|
158 - Calendar | 3258 |
15.99%
|
736 |
57.61%
|
|
|
|
159 - Word Crosses | 5578 |
24.29%
|
1801 |
60.47%
|
|
|
|
160 - Factors and Factorials | 45332 |
31.78%
|
12670 |
82.87%
|
|
|
|
161 - Traffic Lights | 10080 |
38.38%
|
3369 |
88.87%
|
|
|
|
162 - Beggar My Neighbour | 6188 |
33.56%
|
1858 |
81.11%
|
|
|
|
163 - City Directions | 1845 |
14.80%
|
338 |
60.06%
|
|
|
|
164 - String Computer | 13608 |
31.29%
|
2975 |
75.06%
|
|
|
|
165 - Stamps | 4268 |
40.51%
|
1419 |
80.48%
|
|
|
|
166 - Making Change | 11213 |
38.80%
|
3088 |
86.01%
|
|
|
|
167 - The Sultan's Successors | 26338 |
48.05%
|
8486 |
90.61%
|
|
|
|
168 - Theseus and the Minotaur | 9391 |
33.50%
|
2030 |
73.55%
|
|
|
|
169 - Xenosemantics | 2105 |
20.00%
|
327 |
65.14%
|
|
|
|
170 - Clock Patience | 7258 |
45.34%
|
2692 |
90.34%
|
|
|
|
171 - Car Trialling | 3468 |
14.10%
|
565 |
69.91%
|
|
|
|
172 - Calculator Language | 2681 |
25.74%
|
771 |
69.91%
|
|
|
|
173 - Network Wars | 3050 |
16.75%
|
635 |
44.25%
|
|
|
|
174 - Strategy | 1308 |
38.99%
|
543 |
79.74%
|
|
|
|
175 - Keywords | 2348 |
17.38%
|
567 |
47.27%
|
|
|
|
176 - City Navigation | 976 |
31.86%
|
304 |
80.92%
|
|
|
|
177 - Paper Folding | 3557 |
39.33%
|
1143 |
71.39%
|
|
|
|
178 - Shuffling Patience | 1191 |
38.79%
|
442 |
77.38%
|
|
|
|
179 - Code Breaking | 2358 |
25.40%
|
637 |
73.00%
|
|
|
|
180 - Eeny Meeny | 2642 |
22.56%
|
686 |
43.15%
|
|
|
|
181 - Hearts | 1234 |
48.54%
|
603 |
84.08%
|
|
|
|
182 - Bonus Bonds | 900 |
42.89%
|
434 |
79.95%
|
|
|
|
183 - Bit Maps | 6867 |
26.27%
|
1908 |
76.26%
|
|
|
|
184 - Laser Lines | 4737 |
44.46%
|
1377 |
85.26%
|
|
|
|
185 - Roman Numerals | 2864 |
42.07%
|
954 |
83.86%
|
|
|
|
186 - Trip Routing | 4730 |
31.18%
|
1557 |
70.20%
|
|
|
|
187 - Transaction Processing | 3751 |
37.54%
|
1381 |
79.29%
|
|
|
|
188 - Perfect Hash | 5259 |
48.98%
|
1786 |
88.80%
|
|
|
|
189 - Pascal Program Lengths | 1067 |
22.96%
|
310 |
61.61%
|
|
|
|
190 - Circle Through Three Points | 18394 |
35.17%
|
5693 |
78.41%
|
|
|
|
191 - Intersection | 30165 |
22.81%
|
6078 |
69.10%
|
|
|
|
192 - Synchronous Design | 1175 |
30.47%
|
424 |
69.81%
|
|
|
|
193 - Graph Coloring | 22867 |
28.70%
|
5601 |
70.72%
|
|
|
|
194 - Triangle | 2727 |
16.24%
|
553 |
47.20%
|
|
|
|
195 - Anagram | 43850 |
25.66%
|
10577 |
69.48%
|
|
|
|
196 - Spreadsheet | 13058 |
25.39%
|
2235 |
76.02%
|
|
|
|
197 - Cube | 1553 |
19.64%
|
380 |
45.53%
|
|
|
|
198 - Peter's Calculator | 2969 |
19.54%
|
634 |
64.04%
|
|
|
|
199 - Partial differential equations | 1016 |
21.56%
|
388 |
43.81%
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |