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Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
100 - The 3n + 1 problem | 929026 |
26.64%
|
143354 |
73.84%
|
|
|
|
101 - The Blocks Problem | 124425 |
25.74%
|
25096 |
70.22%
|
|
|
|
102 - Ecological Bin Packing | 110779 |
39.39%
|
32318 |
87.26%
|
|
|
103 - Stacking Boxes | 46087 |
26.69%
|
12332 |
61.23%
|
|
|
|
104 - Arbitrage | 33674 |
25.20%
|
7149 |
68.00%
|
|
|
|
105 - The Skyline Problem | 64956 |
26.05%
|
15625 |
69.18%
|
|
|
|
106 - Fermat vs. Pythagoras | 29928 |
34.25%
|
7083 |
67.30%
|
|
|
|
107 - The Cat in the Hat | 53192 |
21.70%
|
9204 |
68.27%
|
|
|
|
108 - Maximum Sum | 74139 |
44.63%
|
23947 |
83.56%
|
|
|
|
109 - SCUD Busters | 14169 |
32.32%
|
3763 |
68.32%
|
|
|
|
110 - Meta-Loopless Sorts | 13074 |
32.12%
|
3618 |
66.14%
|
|
|
|
111 - History Grading | 35933 |
45.58%
|
13619 |
77.88%
|
|
|
|
112 - Tree Summing | 39529 |
28.29%
|
8156 |
78.16%
|
|
|
|
113 - Power of Cryptography | 78421 |
40.98%
|
24921 |
89.13%
|
|
|
|
114 - Simulation Wizardry | 8979 |
32.60%
|
2612 |
75.34%
|
|
|
|
115 - Climbing Trees | 7703 |
35.21%
|
2316 |
81.39%
|
|
|
|
116 - Unidirectional TSP | 70480 |
25.38%
|
12732 |
72.67%
|
|
|
|
117 - The Postal Worker Rings Once | 10104 |
49.68%
|
3990 |
89.35%
|
|
|
|
118 - Mutant Flatworld Explorers | 28738 |
41.84%
|
10129 |
86.84%
|
|
|
|
119 - Greedy Gift Givers | 45096 |
28.93%
|
13207 |
74.83%
|
|
|
|
120 - Stacks of Flapjacks | 47491 |
41.22%
|
12893 |
87.30%
|
|
|
|
121 - Pipe Fitters | 8432 |
43.20%
|
3431 |
87.32%
|
|
|
|
122 - Trees on the level | 42374 |
29.52%
|
7580 |
74.59%
|
|
|
|
123 - Searching Quickly | 14749 |
35.64%
|
4956 |
75.48%
|
|
|
|
124 - Following Orders | 15064 |
39.11%
|
5110 |
78.81%
|
|
|
|
125 - Numbering Paths | 11267 |
29.74%
|
3235 |
74.81%
|
|
|
|
126 - The Errant Physicist | 4532 |
31.71%
|
1619 |
75.85%
|
|
|
|
127 - "Accordian" Patience | 19290 |
40.14%
|
4861 |
81.63%
|
|
|
|
128 - Software CRC | 20150 |
42.88%
|
4503 |
88.01%
|
|
|
|
129 - Krypton Factor | 16080 |
39.77%
|
3160 |
84.30%
|
|
|
|
130 - Roman Roulette | 9806 |
42.23%
|
3995 |
81.48%
|
|
|
|
131 - The Psychic Poker Player | 4347 |
49.99%
|
1876 |
88.49%
|
|
|
|
132 - Bumpy Objects | 4437 |
42.12%
|
1239 |
82.16%
|
|
|
|
133 - The Dole Queue | 28613 |
49.51%
|
8090 |
89.00%
|
|
|
|
134 - Loglan-A Logical Language | 3757 |
29.54%
|
1123 |
80.23%
|
|
|
|
135 - No Rectangles | 3364 |
27.85%
|
1261 |
53.13%
|
|
|
|
136 - Ugly Numbers | 125278 |
32.87%
|
30594 |
79.46%
|
|
|
|
137 - Polygons | 4934 |
21.56%
|
1134 |
62.08%
|
|
|
|
138 - Street Numbers | 21988 |
45.57%
|
8958 |
84.77%
|
|
|
|
139 - Telephone Tangles | 10320 |
16.14%
|
1727 |
48.93%
|
|
|
|
140 - Bandwidth | 16851 |
43.04%
|
3809 |
87.71%
|
|
|
|
141 - The Spot Game | 8875 |
44.60%
|
2711 |
89.89%
|
|
|
|
142 - Mouse Clicks | 7017 |
22.25%
|
2443 |
45.97%
|
|
|
|
143 - Orchard Trees | 20661 |
12.59%
|
2669 |
44.74%
|
|
|
|
144 - Student Grants | 7719 |
46.60%
|
3132 |
85.38%
|
|
|
|
145 - Gondwanaland Telecom | 10615 |
25.62%
|
2898 |
74.78%
|
|
|
|
146 - ID Codes | 35743 |
57.67%
|
16366 |
93.55%
|
|
|
|
147 - Dollars | 65220 |
28.77%
|
12960 |
75.29%
|
|
|
|
148 - Anagram checker | 5549 |
35.45%
|
1596 |
76.32%
|
|
|
|
149 - Forests | 1316 |
45.82%
|
461 |
75.92%
|
|
|
|
150 - Double Time | 2681 |
32.60%
|
869 |
66.28%
|
|
|
|
151 - Power Crisis | 27419 |
60.61%
|
12125 |
93.17%
|
|
|
|
152 - Tree's a Crowd | 12546 |
39.22%
|
3641 |
87.15%
|
|
|
|
153 - Permalex | 7966 |
29.49%
|
2643 |
70.75%
|
|
|
|
154 - Recycling | 7326 |
53.28%
|
3677 |
89.23%
|
|
|
|
155 - All Squares | 7491 |
50.41%
|
3415 |
86.21%
|
|
|
|
156 - Ananagrams | 35506 |
66.04%
|
11881 |
94.54%
|
|
|
|
157 - Route Finding | 2145 |
32.68%
|
711 |
80.17%
|
|
|
|
158 - Calendar | 3421 |
16.08%
|
782 |
57.16%
|
|
|
|
159 - Word Crosses | 5638 |
24.42%
|
1822 |
60.76%
|
|
|
|
160 - Factors and Factorials | 46670 |
31.79%
|
12931 |
83.03%
|
|
|
|
161 - Traffic Lights | 10679 |
38.71%
|
3584 |
89.09%
|
|
|
|
162 - Beggar My Neighbour | 6423 |
33.52%
|
1922 |
81.22%
|
|
|
|
163 - City Directions | 1873 |
14.74%
|
355 |
58.03%
|
|
|
|
164 - String Computer | 14001 |
31.48%
|
3074 |
75.37%
|
|
|
|
165 - Stamps | 4489 |
41.19%
|
1504 |
80.78%
|
|
|
|
166 - Making Change | 11982 |
39.23%
|
3212 |
86.08%
|
|
|
|
167 - The Sultan's Successors | 29033 |
46.75%
|
8735 |
90.48%
|
|
|
|
168 - Theseus and the Minotaur | 9613 |
33.79%
|
2097 |
73.63%
|
|
|
|
169 - Xenosemantics | 2120 |
19.95%
|
334 |
64.37%
|
|
|
|
170 - Clock Patience | 7352 |
45.46%
|
2747 |
90.24%
|
|
|
|
171 - Car Trialling | 3483 |
14.21%
|
570 |
70.00%
|
|
|
|
172 - Calculator Language | 2701 |
25.81%
|
781 |
69.65%
|
|
|
|
173 - Network Wars | 3085 |
16.99%
|
644 |
45.03%
|
|
|
|
174 - Strategy | 1317 |
39.26%
|
552 |
79.71%
|
|
|
|
175 - Keywords | 2362 |
17.57%
|
574 |
47.56%
|
|
|
|
176 - City Navigation | 979 |
31.97%
|
307 |
80.78%
|
|
|
|
177 - Paper Folding | 3819 |
39.59%
|
1202 |
72.38%
|
|
|
|
178 - Shuffling Patience | 1193 |
38.89%
|
444 |
77.48%
|
|
|
|
179 - Code Breaking | 2392 |
25.29%
|
642 |
72.90%
|
|
|
|
180 - Eeny Meeny | 2667 |
22.61%
|
695 |
43.45%
|
|
|
|
181 - Hearts | 1256 |
48.89%
|
620 |
84.03%
|
|
|
|
182 - Bonus Bonds | 913 |
42.72%
|
444 |
79.05%
|
|
|
|
183 - Bit Maps | 7408 |
26.74%
|
1987 |
76.35%
|
|
|
|
184 - Laser Lines | 4946 |
44.42%
|
1394 |
85.29%
|
|
|
|
185 - Roman Numerals | 3150 |
40.95%
|
1027 |
82.77%
|
|
|
|
186 - Trip Routing | 4792 |
31.45%
|
1584 |
70.33%
|
|
|
|
187 - Transaction Processing | 3806 |
37.60%
|
1405 |
79.43%
|
|
|
|
188 - Perfect Hash | 5372 |
49.18%
|
1854 |
88.35%
|
|
|
|
189 - Pascal Program Lengths | 1117 |
22.83%
|
320 |
62.50%
|
|
|
|
190 - Circle Through Three Points | 18676 |
35.28%
|
5745 |
78.49%
|
|
|
|
191 - Intersection | 30750 |
22.92%
|
6172 |
69.38%
|
|
|
|
192 - Synchronous Design | 1194 |
30.15%
|
430 |
69.30%
|
|
|
|
193 - Graph Coloring | 24169 |
28.49%
|
5810 |
70.84%
|
|
|
|
194 - Triangle | 2763 |
17.08%
|
559 |
48.48%
|
|
|
|
195 - Anagram | 45371 |
25.87%
|
10799 |
69.65%
|
|
|
|
196 - Spreadsheet | 13399 |
25.55%
|
2299 |
76.12%
|
|
|
|
197 - Cube | 1571 |
19.80%
|
384 |
46.09%
|
|
|
|
198 - Peter's Calculator | 2981 |
19.62%
|
645 |
63.57%
|
|
|
|
199 - Partial differential equations | 1032 |
22.29%
|
401 |
44.89%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |