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Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
100 - The 3n + 1 problem | 947663 |
26.74%
|
146066 |
73.98%
|
|
|
|
101 - The Blocks Problem | 126880 |
26.06%
|
25582 |
70.43%
|
|
|
|
102 - Ecological Bin Packing | 111415 |
39.43%
|
32511 |
87.24%
|
|
|
103 - Stacking Boxes | 46441 |
26.81%
|
12435 |
61.38%
|
|
|
|
104 - Arbitrage | 33994 |
25.22%
|
7227 |
68.02%
|
|
|
|
105 - The Skyline Problem | 65984 |
26.10%
|
15808 |
69.27%
|
|
|
|
106 - Fermat vs. Pythagoras | 30259 |
34.12%
|
7136 |
67.39%
|
|
|
|
107 - The Cat in the Hat | 53637 |
21.72%
|
9270 |
68.25%
|
|
|
|
108 - Maximum Sum | 75688 |
44.69%
|
24234 |
83.62%
|
|
|
|
109 - SCUD Busters | 14317 |
32.37%
|
3801 |
68.48%
|
|
|
|
110 - Meta-Loopless Sorts | 13435 |
32.26%
|
3660 |
66.09%
|
|
|
|
111 - History Grading | 36657 |
45.30%
|
13695 |
77.88%
|
|
|
|
112 - Tree Summing | 39760 |
28.33%
|
8200 |
78.18%
|
|
|
|
113 - Power of Cryptography | 79561 |
40.99%
|
25256 |
89.08%
|
|
|
|
114 - Simulation Wizardry | 9114 |
32.43%
|
2636 |
75.27%
|
|
|
|
115 - Climbing Trees | 7758 |
35.23%
|
2335 |
81.28%
|
|
|
|
116 - Unidirectional TSP | 71340 |
25.52%
|
12885 |
72.81%
|
|
|
|
117 - The Postal Worker Rings Once | 10216 |
49.77%
|
4041 |
89.31%
|
|
|
|
118 - Mutant Flatworld Explorers | 30794 |
41.70%
|
10473 |
86.86%
|
|
|
|
119 - Greedy Gift Givers | 45748 |
28.97%
|
13327 |
74.95%
|
|
|
|
120 - Stacks of Flapjacks | 48603 |
41.37%
|
13289 |
87.37%
|
|
|
|
121 - Pipe Fitters | 8606 |
43.00%
|
3469 |
87.09%
|
|
|
|
122 - Trees on the level | 43440 |
29.70%
|
7736 |
74.77%
|
|
|
|
123 - Searching Quickly | 14869 |
35.75%
|
5011 |
75.45%
|
|
|
|
124 - Following Orders | 15815 |
39.26%
|
5203 |
78.90%
|
|
|
|
125 - Numbering Paths | 11397 |
29.73%
|
3261 |
74.79%
|
|
|
|
126 - The Errant Physicist | 4596 |
31.70%
|
1633 |
75.81%
|
|
|
|
127 - "Accordian" Patience | 19725 |
39.81%
|
4916 |
81.67%
|
|
|
|
128 - Software CRC | 20251 |
42.92%
|
4536 |
88.05%
|
|
|
|
129 - Krypton Factor | 16311 |
39.86%
|
3220 |
84.25%
|
|
|
|
130 - Roman Roulette | 9993 |
41.91%
|
4023 |
81.36%
|
|
|
|
131 - The Psychic Poker Player | 4378 |
50.11%
|
1892 |
88.42%
|
|
|
|
132 - Bumpy Objects | 4460 |
42.17%
|
1247 |
82.12%
|
|
|
|
133 - The Dole Queue | 29249 |
49.47%
|
8218 |
88.91%
|
|
|
|
134 - Loglan-A Logical Language | 3784 |
29.60%
|
1131 |
80.28%
|
|
|
|
135 - No Rectangles | 3396 |
27.97%
|
1272 |
53.14%
|
|
|
|
136 - Ugly Numbers | 128551 |
32.96%
|
31012 |
79.57%
|
|
|
|
137 - Polygons | 5053 |
21.77%
|
1150 |
62.17%
|
|
|
|
138 - Street Numbers | 22150 |
45.46%
|
8998 |
84.76%
|
|
|
|
139 - Telephone Tangles | 10372 |
16.18%
|
1737 |
49.11%
|
|
|
|
140 - Bandwidth | 17099 |
43.04%
|
3860 |
87.67%
|
|
|
|
141 - The Spot Game | 8981 |
44.79%
|
2747 |
89.95%
|
|
|
|
142 - Mouse Clicks | 7040 |
22.34%
|
2453 |
46.15%
|
|
|
|
143 - Orchard Trees | 20732 |
12.61%
|
2685 |
44.80%
|
|
|
|
144 - Student Grants | 7846 |
46.46%
|
3176 |
85.26%
|
|
|
|
145 - Gondwanaland Telecom | 10809 |
25.61%
|
2921 |
74.80%
|
|
|
|
146 - ID Codes | 36338 |
57.77%
|
16493 |
93.54%
|
|
|
|
147 - Dollars | 66937 |
28.99%
|
13124 |
75.50%
|
|
|
|
148 - Anagram checker | 5572 |
35.61%
|
1609 |
76.44%
|
|
|
|
149 - Forests | 1358 |
45.36%
|
474 |
75.32%
|
|
|
|
150 - Double Time | 2713 |
32.62%
|
883 |
66.14%
|
|
|
|
151 - Power Crisis | 28432 |
60.39%
|
12344 |
93.11%
|
|
|
|
152 - Tree's a Crowd | 12705 |
39.10%
|
3672 |
87.15%
|
|
|
|
153 - Permalex | 8064 |
29.53%
|
2670 |
70.71%
|
|
|
|
154 - Recycling | 7420 |
53.13%
|
3710 |
89.22%
|
|
|
|
155 - All Squares | 7551 |
50.36%
|
3434 |
86.23%
|
|
|
|
156 - Ananagrams | 36298 |
66.23%
|
12087 |
94.56%
|
|
|
|
157 - Route Finding | 2164 |
32.81%
|
720 |
80.28%
|
|
|
|
158 - Calendar | 3457 |
16.20%
|
792 |
57.32%
|
|
|
|
159 - Word Crosses | 5664 |
24.58%
|
1835 |
60.93%
|
|
|
|
160 - Factors and Factorials | 47149 |
31.87%
|
13019 |
83.12%
|
|
|
|
161 - Traffic Lights | 10851 |
38.60%
|
3630 |
88.98%
|
|
|
|
162 - Beggar My Neighbour | 6704 |
33.14%
|
1967 |
80.99%
|
|
|
|
163 - City Directions | 1893 |
14.79%
|
363 |
57.58%
|
|
|
|
164 - String Computer | 14087 |
31.50%
|
3090 |
75.44%
|
|
|
|
165 - Stamps | 4769 |
40.64%
|
1543 |
80.56%
|
|
|
|
166 - Making Change | 12427 |
39.40%
|
3272 |
86.22%
|
|
|
|
167 - The Sultan's Successors | 29886 |
46.56%
|
8831 |
90.52%
|
|
|
|
168 - Theseus and the Minotaur | 9750 |
34.01%
|
2122 |
73.89%
|
|
|
|
169 - Xenosemantics | 2138 |
19.97%
|
340 |
64.12%
|
|
|
|
170 - Clock Patience | 7439 |
45.29%
|
2769 |
90.25%
|
|
|
|
171 - Car Trialling | 3510 |
14.39%
|
580 |
69.83%
|
|
|
|
172 - Calculator Language | 2722 |
26.08%
|
789 |
69.96%
|
|
|
|
173 - Network Wars | 3128 |
17.49%
|
651 |
46.08%
|
|
|
|
174 - Strategy | 1333 |
39.46%
|
560 |
79.46%
|
|
|
|
175 - Keywords | 2388 |
17.71%
|
582 |
47.77%
|
|
|
|
176 - City Navigation | 985 |
31.88%
|
310 |
80.32%
|
|
|
|
177 - Paper Folding | 4121 |
40.35%
|
1228 |
72.72%
|
|
|
|
178 - Shuffling Patience | 1206 |
38.72%
|
454 |
76.43%
|
|
|
|
179 - Code Breaking | 2400 |
25.25%
|
646 |
72.60%
|
|
|
|
180 - Eeny Meeny | 2682 |
22.60%
|
698 |
43.41%
|
|
|
|
181 - Hearts | 1263 |
48.93%
|
625 |
83.84%
|
|
|
|
182 - Bonus Bonds | 923 |
42.80%
|
448 |
78.79%
|
|
|
|
183 - Bit Maps | 7601 |
26.65%
|
2021 |
76.30%
|
|
|
|
184 - Laser Lines | 4991 |
44.40%
|
1402 |
85.24%
|
|
|
|
185 - Roman Numerals | 3233 |
40.55%
|
1042 |
82.73%
|
|
|
|
186 - Trip Routing | 4799 |
31.49%
|
1588 |
70.28%
|
|
|
|
187 - Transaction Processing | 3826 |
37.53%
|
1412 |
79.32%
|
|
|
|
188 - Perfect Hash | 5468 |
48.99%
|
1874 |
88.47%
|
|
|
|
189 - Pascal Program Lengths | 1130 |
22.83%
|
327 |
61.77%
|
|
|
|
190 - Circle Through Three Points | 18759 |
35.32%
|
5766 |
78.51%
|
|
|
|
191 - Intersection | 31030 |
22.93%
|
6212 |
69.40%
|
|
|
|
192 - Synchronous Design | 1201 |
30.31%
|
432 |
69.44%
|
|
|
|
193 - Graph Coloring | 24562 |
28.43%
|
5870 |
70.94%
|
|
|
|
194 - Triangle | 2767 |
17.13%
|
561 |
48.31%
|
|
|
|
195 - Anagram | 46393 |
25.90%
|
10850 |
69.60%
|
|
|
|
196 - Spreadsheet | 13568 |
25.60%
|
2328 |
76.07%
|
|
|
|
197 - Cube | 1591 |
19.80%
|
387 |
45.99%
|
|
|
|
198 - Peter's Calculator | 3001 |
19.83%
|
652 |
63.80%
|
|
|
|
199 - Partial differential equations | 1038 |
22.45%
|
405 |
44.94%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |