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Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
100 - The 3n + 1 problem | 928116 |
26.64%
|
143278 |
73.83%
|
|
|
|
101 - The Blocks Problem | 124146 |
25.70%
|
25054 |
70.19%
|
|
|
|
102 - Ecological Bin Packing | 110619 |
39.39%
|
32297 |
87.26%
|
|
|
103 - Stacking Boxes | 46074 |
26.68%
|
12329 |
61.21%
|
|
|
|
104 - Arbitrage | 33661 |
25.19%
|
7146 |
67.98%
|
|
|
|
105 - The Skyline Problem | 64787 |
26.02%
|
15598 |
69.20%
|
|
|
|
106 - Fermat vs. Pythagoras | 29893 |
34.25%
|
7075 |
67.29%
|
|
|
|
107 - The Cat in the Hat | 53183 |
21.69%
|
9201 |
68.26%
|
|
|
|
108 - Maximum Sum | 73890 |
44.63%
|
23908 |
83.55%
|
|
|
|
109 - SCUD Busters | 14156 |
32.29%
|
3759 |
68.32%
|
|
|
|
110 - Meta-Loopless Sorts | 13062 |
32.07%
|
3612 |
66.11%
|
|
|
|
111 - History Grading | 35882 |
45.58%
|
13604 |
77.86%
|
|
|
|
112 - Tree Summing | 39475 |
28.30%
|
8148 |
78.19%
|
|
|
|
113 - Power of Cryptography | 78260 |
40.97%
|
24884 |
89.11%
|
|
|
|
114 - Simulation Wizardry | 8969 |
32.58%
|
2608 |
75.35%
|
|
|
|
115 - Climbing Trees | 7661 |
35.30%
|
2309 |
81.42%
|
|
|
|
116 - Unidirectional TSP | 70364 |
25.35%
|
12717 |
72.64%
|
|
|
|
117 - The Postal Worker Rings Once | 10096 |
49.64%
|
3987 |
89.34%
|
|
|
|
118 - Mutant Flatworld Explorers | 28575 |
41.88%
|
10110 |
86.83%
|
|
|
|
119 - Greedy Gift Givers | 45030 |
28.93%
|
13198 |
74.83%
|
|
|
|
120 - Stacks of Flapjacks | 47425 |
41.21%
|
12884 |
87.29%
|
|
|
|
121 - Pipe Fitters | 8427 |
43.19%
|
3429 |
87.31%
|
|
|
|
122 - Trees on the level | 42121 |
29.50%
|
7560 |
74.58%
|
|
|
|
123 - Searching Quickly | 14724 |
35.62%
|
4951 |
75.46%
|
|
|
|
124 - Following Orders | 14970 |
39.19%
|
5100 |
78.78%
|
|
|
|
125 - Numbering Paths | 11250 |
29.72%
|
3232 |
74.78%
|
|
|
|
126 - The Errant Physicist | 4531 |
31.69%
|
1618 |
75.83%
|
|
|
|
127 - "Accordian" Patience | 19198 |
40.07%
|
4840 |
81.59%
|
|
|
|
128 - Software CRC | 20137 |
42.88%
|
4499 |
88.00%
|
|
|
|
129 - Krypton Factor | 15888 |
39.84%
|
3147 |
84.33%
|
|
|
|
130 - Roman Roulette | 9797 |
42.23%
|
3990 |
81.50%
|
|
|
|
131 - The Psychic Poker Player | 4343 |
49.99%
|
1875 |
88.48%
|
|
|
|
132 - Bumpy Objects | 4436 |
42.11%
|
1238 |
82.15%
|
|
|
|
133 - The Dole Queue | 28405 |
49.58%
|
8071 |
89.01%
|
|
|
|
134 - Loglan-A Logical Language | 3755 |
29.56%
|
1122 |
80.30%
|
|
|
|
135 - No Rectangles | 3363 |
27.86%
|
1260 |
53.17%
|
|
|
|
136 - Ugly Numbers | 124654 |
32.88%
|
30528 |
79.44%
|
|
|
|
137 - Polygons | 4926 |
21.56%
|
1133 |
62.05%
|
|
|
|
138 - Street Numbers | 21982 |
45.56%
|
8956 |
84.77%
|
|
|
|
139 - Telephone Tangles | 10307 |
16.14%
|
1725 |
48.87%
|
|
|
|
140 - Bandwidth | 16781 |
43.01%
|
3800 |
87.68%
|
|
|
|
141 - The Spot Game | 8868 |
44.59%
|
2710 |
89.89%
|
|
|
|
142 - Mouse Clicks | 7013 |
22.23%
|
2442 |
45.95%
|
|
|
|
143 - Orchard Trees | 20631 |
12.59%
|
2668 |
44.72%
|
|
|
|
144 - Student Grants | 7693 |
46.68%
|
3128 |
85.39%
|
|
|
|
145 - Gondwanaland Telecom | 10598 |
25.62%
|
2895 |
74.78%
|
|
|
|
146 - ID Codes | 35695 |
57.67%
|
16349 |
93.56%
|
|
|
|
147 - Dollars | 64948 |
28.76%
|
12949 |
75.26%
|
|
|
|
148 - Anagram checker | 5544 |
35.39%
|
1595 |
76.30%
|
|
|
|
149 - Forests | 1316 |
45.82%
|
461 |
75.92%
|
|
|
|
150 - Double Time | 2681 |
32.60%
|
869 |
66.28%
|
|
|
|
151 - Power Crisis | 27362 |
60.55%
|
12114 |
93.16%
|
|
|
|
152 - Tree's a Crowd | 12517 |
39.23%
|
3636 |
87.13%
|
|
|
|
153 - Permalex | 7965 |
29.48%
|
2642 |
70.74%
|
|
|
|
154 - Recycling | 7323 |
53.27%
|
3676 |
89.23%
|
|
|
|
155 - All Squares | 7487 |
50.42%
|
3414 |
86.20%
|
|
|
|
156 - Ananagrams | 35340 |
65.98%
|
11855 |
94.53%
|
|
|
|
157 - Route Finding | 2145 |
32.68%
|
711 |
80.17%
|
|
|
|
158 - Calendar | 3421 |
16.08%
|
782 |
57.16%
|
|
|
|
159 - Word Crosses | 5636 |
24.41%
|
1821 |
60.74%
|
|
|
|
160 - Factors and Factorials | 46600 |
31.80%
|
12924 |
83.04%
|
|
|
|
161 - Traffic Lights | 10641 |
38.69%
|
3572 |
89.05%
|
|
|
|
162 - Beggar My Neighbour | 6419 |
33.51%
|
1920 |
81.20%
|
|
|
|
163 - City Directions | 1873 |
14.74%
|
355 |
58.03%
|
|
|
|
164 - String Computer | 13968 |
31.47%
|
3071 |
75.35%
|
|
|
|
165 - Stamps | 4470 |
41.23%
|
1502 |
80.83%
|
|
|
|
166 - Making Change | 11929 |
39.27%
|
3210 |
86.07%
|
|
|
|
167 - The Sultan's Successors | 28884 |
46.84%
|
8725 |
90.48%
|
|
|
|
168 - Theseus and the Minotaur | 9596 |
33.72%
|
2093 |
73.58%
|
|
|
|
169 - Xenosemantics | 2120 |
19.95%
|
334 |
64.37%
|
|
|
|
170 - Clock Patience | 7346 |
45.45%
|
2744 |
90.23%
|
|
|
|
171 - Car Trialling | 3480 |
14.22%
|
569 |
70.12%
|
|
|
|
172 - Calculator Language | 2701 |
25.81%
|
781 |
69.65%
|
|
|
|
173 - Network Wars | 3081 |
16.91%
|
643 |
44.95%
|
|
|
|
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 | 3781 |
39.65%
|
1194 |
72.28%
|
|
|
|
178 - Shuffling Patience | 1193 |
38.89%
|
444 |
77.48%
|
|
|
|
179 - Code Breaking | 2392 |
25.29%
|
642 |
72.90%
|
|
|
|
180 - Eeny Meeny | 2663 |
22.57%
|
694 |
43.37%
|
|
|
|
181 - Hearts | 1251 |
48.92%
|
618 |
83.98%
|
|
|
|
182 - Bonus Bonds | 913 |
42.72%
|
444 |
79.05%
|
|
|
|
183 - Bit Maps | 7384 |
26.76%
|
1982 |
76.39%
|
|
|
|
184 - Laser Lines | 4912 |
44.65%
|
1393 |
85.28%
|
|
|
|
185 - Roman Numerals | 3136 |
40.85%
|
1026 |
82.75%
|
|
|
|
186 - Trip Routing | 4786 |
31.45%
|
1583 |
70.31%
|
|
|
|
187 - Transaction Processing | 3797 |
37.63%
|
1403 |
79.40%
|
|
|
|
188 - Perfect Hash | 5359 |
49.19%
|
1851 |
88.38%
|
|
|
|
189 - Pascal Program Lengths | 1117 |
22.83%
|
320 |
62.50%
|
|
|
|
190 - Circle Through Three Points | 18670 |
35.27%
|
5741 |
78.47%
|
|
|
|
191 - Intersection | 30675 |
22.92%
|
6166 |
69.36%
|
|
|
|
192 - Synchronous Design | 1180 |
30.51%
|
429 |
69.46%
|
|
|
|
193 - Graph Coloring | 24025 |
28.54%
|
5799 |
70.89%
|
|
|
|
194 - Triangle | 2763 |
17.08%
|
559 |
48.48%
|
|
|
|
195 - Anagram | 45341 |
25.87%
|
10792 |
69.64%
|
|
|
|
196 - Spreadsheet | 13394 |
25.53%
|
2298 |
76.11%
|
|
|
|
197 - Cube | 1571 |
19.80%
|
384 |
46.09%
|
|
|
|
198 - Peter's Calculator | 2981 |
19.62%
|
645 |
63.57%
|
|
|
|
199 - Partial differential equations | 1031 |
22.21%
|
401 |
44.89%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |