Browse Problems 
Our Patreons
Diamond Sponsors
Steven & Felix Halim
Reinardus Pradhitya
Gold Sponsors
--- YOUR NAME HERE ----
Silver Sponsors
--- YOUR NAME HERE ----
Bronze Sponsors
Christianto Handojo
Krzysztof Adamek
Fatima Broom
Contribute
Bitcoin:
1ojudgeapLUjJcnUm
ze67a4w3TJ6WnPxo
Browse Problems
| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
|
100 - The 3n + 1 problem | 952654 |
26.78%
|
146671 |
74.02%
|
|
|
|
101 - The Blocks Problem | 127440 |
26.17%
|
25660 |
70.46%
|
|
|
|
102 - Ecological Bin Packing | 111636 |
39.47%
|
32553 |
87.24%
|
|
|
103 - Stacking Boxes | 46545 |
26.88%
|
12459 |
61.43%
|
|
|
|
104 - Arbitrage | 34048 |
25.24%
|
7247 |
68.01%
|
|
|
|
105 - The Skyline Problem | 66192 |
26.14%
|
15846 |
69.31%
|
|
|
|
106 - Fermat vs. Pythagoras | 30307 |
34.14%
|
7155 |
67.39%
|
|
|
|
107 - The Cat in the Hat | 53758 |
21.77%
|
9297 |
68.27%
|
|
|
|
108 - Maximum Sum | 76258 |
44.72%
|
24298 |
83.62%
|
|
|
|
109 - SCUD Busters | 14336 |
32.41%
|
3809 |
68.47%
|
|
|
|
110 - Meta-Loopless Sorts | 13454 |
32.29%
|
3668 |
66.09%
|
|
|
|
111 - History Grading | 36860 |
45.28%
|
13730 |
77.87%
|
|
|
|
112 - Tree Summing | 39992 |
28.39%
|
8243 |
78.18%
|
|
|
|
113 - Power of Cryptography | 79680 |
41.02%
|
25295 |
89.07%
|
|
|
|
114 - Simulation Wizardry | 9130 |
32.42%
|
2643 |
75.14%
|
|
|
|
115 - Climbing Trees | 7789 |
35.18%
|
2342 |
81.17%
|
|
|
|
116 - Unidirectional TSP | 71482 |
25.56%
|
12916 |
72.85%
|
|
|
|
117 - The Postal Worker Rings Once | 10248 |
49.84%
|
4052 |
89.29%
|
|
|
|
118 - Mutant Flatworld Explorers | 31705 |
41.77%
|
10618 |
86.98%
|
|
|
|
119 - Greedy Gift Givers | 46043 |
29.07%
|
13357 |
74.97%
|
|
|
|
120 - Stacks of Flapjacks | 48763 |
41.42%
|
13346 |
87.38%
|
|
|
|
121 - Pipe Fitters | 8624 |
42.98%
|
3474 |
87.02%
|
|
|
|
122 - Trees on the level | 43798 |
29.77%
|
7776 |
74.82%
|
|
|
|
123 - Searching Quickly | 14888 |
35.80%
|
5023 |
75.47%
|
|
|
|
124 - Following Orders | 15949 |
39.38%
|
5220 |
78.93%
|
|
|
|
125 - Numbering Paths | 11430 |
29.73%
|
3269 |
74.76%
|
|
|
|
126 - The Errant Physicist | 4600 |
31.74%
|
1635 |
75.78%
|
|
|
|
127 - "Accordian" Patience | 19871 |
39.80%
|
4932 |
81.69%
|
|
|
|
128 - Software CRC | 20274 |
42.91%
|
4542 |
88.02%
|
|
|
|
129 - Krypton Factor | 16372 |
39.87%
|
3232 |
84.25%
|
|
|
|
130 - Roman Roulette | 10011 |
41.90%
|
4030 |
81.32%
|
|
|
|
131 - The Psychic Poker Player | 4411 |
50.17%
|
1900 |
88.32%
|
|
|
|
132 - Bumpy Objects | 4470 |
42.21%
|
1252 |
82.11%
|
|
|
|
133 - The Dole Queue | 29471 |
49.39%
|
8250 |
88.90%
|
|
|
|
134 - Loglan-A Logical Language | 3787 |
29.63%
|
1133 |
80.23%
|
|
|
|
135 - No Rectangles | 3402 |
28.04%
|
1276 |
53.21%
|
|
|
|
136 - Ugly Numbers | 129447 |
32.99%
|
31067 |
79.58%
|
|
|
|
137 - Polygons | 5073 |
21.78%
|
1153 |
62.19%
|
|
|
|
138 - Street Numbers | 22162 |
45.47%
|
9006 |
84.75%
|
|
|
|
139 - Telephone Tangles | 10405 |
16.21%
|
1740 |
49.20%
|
|
|
|
140 - Bandwidth | 17148 |
43.08%
|
3872 |
87.68%
|
|
|
|
141 - The Spot Game | 9008 |
44.86%
|
2758 |
89.88%
|
|
|
|
142 - Mouse Clicks | 7048 |
22.36%
|
2457 |
46.15%
|
|
|
|
143 - Orchard Trees | 20755 |
12.62%
|
2688 |
44.83%
|
|
|
|
144 - Student Grants | 7856 |
46.46%
|
3182 |
85.23%
|
|
|
|
145 - Gondwanaland Telecom | 10885 |
25.73%
|
2936 |
74.86%
|
|
|
|
146 - ID Codes | 36464 |
57.82%
|
16522 |
93.53%
|
|
|
|
147 - Dollars | 67256 |
29.07%
|
13157 |
75.53%
|
|
|
|
148 - Anagram checker | 5574 |
35.61%
|
1610 |
76.40%
|
|
|
|
149 - Forests | 1396 |
44.41%
|
479 |
75.16%
|
|
|
|
150 - Double Time | 2717 |
32.61%
|
886 |
65.91%
|
|
|
|
151 - Power Crisis | 28634 |
60.41%
|
12392 |
93.09%
|
|
|
|
152 - Tree's a Crowd | 12726 |
39.11%
|
3676 |
87.11%
|
|
|
|
153 - Permalex | 8081 |
29.56%
|
2674 |
70.72%
|
|
|
|
154 - Recycling | 7456 |
53.10%
|
3725 |
89.21%
|
|
|
|
155 - All Squares | 7560 |
50.36%
|
3437 |
86.18%
|
|
|
|
156 - Ananagrams | 36745 |
66.17%
|
12151 |
94.58%
|
|
|
|
157 - Route Finding | 2166 |
32.83%
|
721 |
80.17%
|
|
|
|
158 - Calendar | 3472 |
16.24%
|
794 |
57.30%
|
|
|
|
159 - Word Crosses | 5671 |
24.58%
|
1837 |
60.86%
|
|
|
|
160 - Factors and Factorials | 47430 |
31.88%
|
13040 |
83.13%
|
|
|
|
161 - Traffic Lights | 10875 |
38.60%
|
3642 |
88.88%
|
|
|
|
162 - Beggar My Neighbour | 6768 |
33.04%
|
1976 |
80.82%
|
|
|
|
163 - City Directions | 1895 |
14.83%
|
365 |
57.53%
|
|
|
|
164 - String Computer | 14316 |
31.52%
|
3093 |
75.43%
|
|
|
|
165 - Stamps | 4809 |
40.76%
|
1553 |
80.62%
|
|
|
|
166 - Making Change | 12537 |
39.52%
|
3288 |
86.25%
|
|
|
|
167 - The Sultan's Successors | 30408 |
46.70%
|
8868 |
90.54%
|
|
|
|
168 - Theseus and the Minotaur | 9798 |
34.07%
|
2127 |
73.91%
|
|
|
|
169 - Xenosemantics | 2142 |
19.98%
|
342 |
64.04%
|
|
|
|
170 - Clock Patience | 7457 |
45.30%
|
2773 |
90.23%
|
|
|
|
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 | 4138 |
40.43%
|
1234 |
72.77%
|
|
|
|
178 - Shuffling Patience | 1207 |
38.69%
|
455 |
76.26%
|
|
|
|
179 - Code Breaking | 2401 |
25.24%
|
647 |
72.49%
|
|
|
|
180 - Eeny Meeny | 2690 |
22.57%
|
701 |
43.37%
|
|
|
|
181 - Hearts | 1265 |
48.93%
|
626 |
83.87%
|
|
|
|
182 - Bonus Bonds | 924 |
42.75%
|
449 |
78.62%
|
|
|
|
183 - Bit Maps | 7696 |
26.85%
|
2028 |
76.38%
|
|
|
|
184 - Laser Lines | 5004 |
44.38%
|
1407 |
85.07%
|
|
|
|
185 - Roman Numerals | 3236 |
40.54%
|
1044 |
82.66%
|
|
|
|
186 - Trip Routing | 4807 |
31.50%
|
1592 |
70.29%
|
|
|
|
187 - Transaction Processing | 3830 |
37.55%
|
1414 |
79.28%
|
|
|
|
188 - Perfect Hash | 5473 |
49.00%
|
1877 |
88.44%
|
|
|
|
189 - Pascal Program Lengths | 1136 |
22.71%
|
329 |
61.40%
|
|
|
|
190 - Circle Through Three Points | 18785 |
35.34%
|
5768 |
78.50%
|
|
|
|
191 - Intersection | 31153 |
22.99%
|
6215 |
69.40%
|
|
|
|
192 - Synchronous Design | 1203 |
30.34%
|
434 |
69.35%
|
|
|
|
193 - Graph Coloring | 24702 |
28.50%
|
5911 |
71.07%
|
|
|
|
194 - Triangle | 2807 |
17.31%
|
563 |
48.31%
|
|
|
|
195 - Anagram | 46541 |
25.93%
|
10865 |
69.60%
|
|
|
|
196 - Spreadsheet | 13585 |
25.60%
|
2331 |
76.06%
|
|
|
|
197 - Cube | 1603 |
19.84%
|
389 |
46.27%
|
|
|
|
198 - Peter's Calculator | 3002 |
19.85%
|
653 |
63.86%
|
|
|
|
199 - Partial differential equations | 1040 |
22.50%
|
407 |
44.96%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |