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 | 955127 |
26.82%
|
147130 |
74.07%
|
|
|
|
101 - The Blocks Problem | 127610 |
26.20%
|
25708 |
70.48%
|
|
|
|
102 - Ecological Bin Packing | 111745 |
39.49%
|
32585 |
87.25%
|
|
|
103 - Stacking Boxes | 46580 |
26.91%
|
12478 |
61.46%
|
|
|
|
104 - Arbitrage | 34091 |
25.26%
|
7255 |
68.04%
|
|
|
|
105 - The Skyline Problem | 66304 |
26.17%
|
15874 |
69.35%
|
|
|
|
106 - Fermat vs. Pythagoras | 30347 |
34.14%
|
7165 |
67.40%
|
|
|
|
107 - The Cat in the Hat | 53805 |
21.78%
|
9312 |
68.26%
|
|
|
|
108 - Maximum Sum | 76448 |
44.74%
|
24336 |
83.63%
|
|
|
|
109 - SCUD Busters | 14351 |
32.44%
|
3814 |
68.51%
|
|
|
|
110 - Meta-Loopless Sorts | 13468 |
32.32%
|
3673 |
66.10%
|
|
|
|
111 - History Grading | 36919 |
45.30%
|
13745 |
77.87%
|
|
|
|
112 - Tree Summing | 40123 |
28.40%
|
8250 |
78.19%
|
|
|
|
113 - Power of Cryptography | 79760 |
41.03%
|
25312 |
89.08%
|
|
|
|
114 - Simulation Wizardry | 9143 |
32.48%
|
2649 |
75.08%
|
|
|
|
115 - Climbing Trees | 7797 |
35.22%
|
2345 |
81.19%
|
|
|
|
116 - Unidirectional TSP | 71546 |
25.58%
|
12931 |
72.86%
|
|
|
|
117 - The Postal Worker Rings Once | 10283 |
49.88%
|
4057 |
89.30%
|
|
|
|
118 - Mutant Flatworld Explorers | 32050 |
41.95%
|
10663 |
87.00%
|
|
|
|
119 - Greedy Gift Givers | 46086 |
29.09%
|
13369 |
74.99%
|
|
|
|
120 - Stacks of Flapjacks | 49083 |
41.59%
|
13516 |
87.49%
|
|
|
|
121 - Pipe Fitters | 8635 |
43.02%
|
3477 |
87.03%
|
|
|
|
122 - Trees on the level | 43948 |
29.83%
|
7797 |
74.85%
|
|
|
|
123 - Searching Quickly | 14899 |
35.82%
|
5027 |
75.47%
|
|
|
|
124 - Following Orders | 16028 |
39.45%
|
5231 |
78.93%
|
|
|
|
125 - Numbering Paths | 11466 |
29.78%
|
3275 |
74.81%
|
|
|
|
126 - The Errant Physicist | 4618 |
31.75%
|
1639 |
75.78%
|
|
|
|
127 - "Accordian" Patience | 19911 |
39.84%
|
4937 |
81.71%
|
|
|
|
128 - Software CRC | 20284 |
42.93%
|
4546 |
88.03%
|
|
|
|
129 - Krypton Factor | 16418 |
39.89%
|
3237 |
84.28%
|
|
|
|
130 - Roman Roulette | 10053 |
41.81%
|
4035 |
81.31%
|
|
|
|
131 - The Psychic Poker Player | 4432 |
50.09%
|
1903 |
88.33%
|
|
|
|
132 - Bumpy Objects | 4477 |
42.28%
|
1254 |
82.14%
|
|
|
|
133 - The Dole Queue | 29548 |
49.40%
|
8264 |
88.90%
|
|
|
|
134 - Loglan-A Logical Language | 3801 |
29.65%
|
1136 |
80.37%
|
|
|
|
135 - No Rectangles | 3406 |
28.13%
|
1278 |
53.29%
|
|
|
|
136 - Ugly Numbers | 129629 |
33.00%
|
31101 |
79.59%
|
|
|
|
137 - Polygons | 5090 |
21.85%
|
1157 |
62.32%
|
|
|
|
138 - Street Numbers | 22185 |
45.49%
|
9012 |
84.75%
|
|
|
|
139 - Telephone Tangles | 10452 |
16.15%
|
1742 |
49.14%
|
|
|
|
140 - Bandwidth | 17168 |
43.07%
|
3876 |
87.67%
|
|
|
|
141 - The Spot Game | 9055 |
44.90%
|
2765 |
89.91%
|
|
|
|
142 - Mouse Clicks | 7055 |
22.44%
|
2460 |
46.22%
|
|
|
|
143 - Orchard Trees | 20773 |
12.64%
|
2693 |
44.82%
|
|
|
|
144 - Student Grants | 7876 |
46.43%
|
3185 |
85.24%
|
|
|
|
145 - Gondwanaland Telecom | 10945 |
25.78%
|
2947 |
74.86%
|
|
|
|
146 - ID Codes | 36531 |
57.85%
|
16534 |
93.53%
|
|
|
|
147 - Dollars | 67432 |
29.11%
|
13190 |
75.58%
|
|
|
|
148 - Anagram checker | 5592 |
35.66%
|
1616 |
76.42%
|
|
|
|
149 - Forests | 1410 |
44.47%
|
481 |
75.47%
|
|
|
|
150 - Double Time | 2730 |
32.56%
|
889 |
65.92%
|
|
|
|
151 - Power Crisis | 28739 |
60.45%
|
12427 |
93.11%
|
|
|
|
152 - Tree's a Crowd | 12737 |
39.15%
|
3680 |
87.12%
|
|
|
|
153 - Permalex | 8096 |
29.58%
|
2678 |
70.72%
|
|
|
|
154 - Recycling | 7473 |
53.14%
|
3734 |
89.23%
|
|
|
|
155 - All Squares | 7568 |
50.41%
|
3440 |
86.19%
|
|
|
|
156 - Ananagrams | 36790 |
66.18%
|
12167 |
94.60%
|
|
|
|
157 - Route Finding | 2176 |
32.90%
|
724 |
80.25%
|
|
|
|
158 - Calendar | 3483 |
16.34%
|
797 |
57.34%
|
|
|
|
159 - Word Crosses | 5685 |
24.61%
|
1841 |
60.89%
|
|
|
|
160 - Factors and Factorials | 47508 |
31.88%
|
13049 |
83.13%
|
|
|
|
161 - Traffic Lights | 10897 |
38.65%
|
3651 |
88.91%
|
|
|
|
162 - Beggar My Neighbour | 6783 |
33.05%
|
1982 |
80.78%
|
|
|
|
163 - City Directions | 1919 |
14.85%
|
368 |
57.61%
|
|
|
|
164 - String Computer | 14359 |
31.51%
|
3103 |
75.41%
|
|
|
|
165 - Stamps | 4826 |
40.84%
|
1559 |
80.56%
|
|
|
|
166 - Making Change | 12560 |
39.59%
|
3298 |
86.29%
|
|
|
|
167 - The Sultan's Successors | 30649 |
46.86%
|
8883 |
90.52%
|
|
|
|
168 - Theseus and the Minotaur | 9806 |
34.11%
|
2131 |
73.96%
|
|
|
|
169 - Xenosemantics | 2155 |
19.91%
|
345 |
63.77%
|
|
|
|
170 - Clock Patience | 7463 |
45.32%
|
2775 |
90.23%
|
|
|
|
171 - Car Trialling | 3528 |
14.40%
|
584 |
69.69%
|
|
|
|
172 - Calculator Language | 2748 |
26.20%
|
795 |
69.69%
|
|
|
|
173 - Network Wars | 3139 |
17.52%
|
654 |
46.02%
|
|
|
|
174 - Strategy | 1341 |
39.45%
|
564 |
79.26%
|
|
|
|
175 - Keywords | 2410 |
17.59%
|
586 |
47.61%
|
|
|
|
176 - City Navigation | 996 |
31.83%
|
315 |
79.68%
|
|
|
|
177 - Paper Folding | 4156 |
40.59%
|
1245 |
72.93%
|
|
|
|
178 - Shuffling Patience | 1211 |
38.56%
|
457 |
75.93%
|
|
|
|
179 - Code Breaking | 2426 |
25.10%
|
651 |
72.35%
|
|
|
|
180 - Eeny Meeny | 2700 |
22.59%
|
703 |
43.39%
|
|
|
|
181 - Hearts | 1271 |
48.86%
|
628 |
83.76%
|
|
|
|
182 - Bonus Bonds | 931 |
42.75%
|
453 |
78.37%
|
|
|
|
183 - Bit Maps | 7830 |
26.99%
|
2037 |
76.39%
|
|
|
|
184 - Laser Lines | 5015 |
44.47%
|
1409 |
85.10%
|
|
|
|
185 - Roman Numerals | 3245 |
40.55%
|
1049 |
82.55%
|
|
|
|
186 - Trip Routing | 4812 |
31.46%
|
1594 |
70.20%
|
|
|
|
187 - Transaction Processing | 3836 |
37.64%
|
1416 |
79.31%
|
|
|
|
188 - Perfect Hash | 5489 |
49.10%
|
1888 |
88.51%
|
|
|
|
189 - Pascal Program Lengths | 1142 |
23.12%
|
332 |
62.05%
|
|
|
|
190 - Circle Through Three Points | 18804 |
35.35%
|
5772 |
78.52%
|
|
|
|
191 - Intersection | 31222 |
23.00%
|
6222 |
69.41%
|
|
|
|
192 - Synchronous Design | 1211 |
30.47%
|
436 |
69.50%
|
|
|
|
193 - Graph Coloring | 24793 |
28.54%
|
5922 |
71.09%
|
|
|
|
194 - Triangle | 2815 |
17.30%
|
566 |
48.23%
|
|
|
|
195 - Anagram | 46684 |
25.97%
|
10872 |
69.61%
|
|
|
|
196 - Spreadsheet | 13598 |
25.64%
|
2337 |
76.12%
|
|
|
|
197 - Cube | 1612 |
20.04%
|
392 |
46.43%
|
|
|
|
198 - Peter's Calculator | 3007 |
19.85%
|
655 |
63.82%
|
|
|
|
199 - Partial differential equations | 1044 |
22.61%
|
410 |
45.12%
|
|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |