![]() | Problems which can be judged (DO NOT submit them if this icon doesn't exist!). The yellow colour means a special correction program for that problem; the blue colour means multiple input; finally, the green colour (a mix of blue and yellow) means a problem with multiple inputs and a special judge program. | |
| Keys | ![]() | Click on this icon to download the problem in PostScript. On this way, you can get an high-quality printed copy. |
| nnnn (nn.n %) | Total submissions and percent of accepted. Click to get a ranklist and a summary for that problem. Color keys: latest submission in the last month (blue), week (green) or 48-hours (red) -blinks in Netscape if an author improves his score or just comes into the ranklist. |
![]() | ![]() | 100 | The 3n + 1 problem (24.9 %) |
![]() | ![]() | 101 | The Blocks Problem (29.8 %) |
![]() | ![]() | 102 | Ecological Bin Packing (38.4 %) |
![]() | ![]() | 103 | Stacking Boxes (40.9 %) |
![]() | ![]() | 104 | Arbitrage (16.8 %) |
![]() | ![]() | 105 | The Skyline Problem 7853 (41.6 %)
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![]() | ![]() | 106 | Fermat vs. Pythagoras (10.5 %)
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![]() | ![]() | 107 | The Cat in the Hat 6915 (12.6 %) |
![]() | ![]() | 108 | Maximum Sum (41.0 %) |
![]() | ![]() | 109 | SCUD Busters 1810 (29.4 %) |
![]() | ![]() | 110 | Meta-Loopless Sorts (11.7 %)
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![]() | ![]() | 111 | History Grading (26.3 %)
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![]() | ![]() | 112 | Tree Summing (19.2 %) |
![]() | ![]() | 113 | Power of Cryptography (31.3 %) |
![]() | ![]() | 114 | Simulation Wizardry (22.7 %) |
![]() | ![]() | 115 | Climbing Trees (33.4 %) |
![]() | ![]() | 116 | Unidirectional TSP (34.7 %) |
![]() | ![]() | 117 | The Postal Worker Rings Once (53.6 %) |
![]() | ![]() | 118 | Mutant Flatworld Explorers (37.1 %) |
![]() | ![]() | 119 | Greedy Gift Givers (37.3 %) |
![]() | ![]() | 120 | Stacks of Flapjacks (51.2 %) |
![]() | ![]() | 121 | Pipe Fitters (39.6 %) |
![]() | ![]() | 122 | Trees on the level (26.3 %) |
![]() | ![]() | 123 | Searching Quickly (39.0 %) |
![]() | ![]() | 124 | Following Orders (45.6 %) |
![]() | ![]() | 125 | Numbering Paths (33.6 %) |
![]() | ![]() | 126 | The Errant Physicist (40.3 %) |
![]() | ![]() | 127 | ``Accordian'' Patience 1052 (17.3 %) |
![]() | ![]() | 128 | Software CRC 2710 (32.0 %) |
![]() | ![]() | 129 | Krypton Factor 1253 (33.5 %) |
![]() | ![]() | 130 | Roman Roulette (39.2 %) |
![]() | ![]() | 131 | The Psychic Poker Player 665 (49.5 %) |
![]() | ![]() | 132 | Bumpy Objects (40.8 %) |
![]() | ![]() | 133 | The Dole Queue 1643 (58.2 %) |
![]() | ![]() | 134 | Loglan-A Logical Language 962 (22.8 %) |
![]() | ![]() | 135 | No Rectangles 673 ( 9.5 %)
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![]() | ![]() | 136 | Ugly Numbers (37.4 %) |
![]() | ![]() | 137 | Polygons 857 (24.6 %) |
![]() | ![]() | 138 | Street Numbers (55.1 %) |
![]() | ![]() | 139 | Telephone Tangles 2021 ( 2.5 %) |
![]() | ![]() | 140 | Bandwidth (41.2 %) |
![]() | ![]() | 141 | The Spot Game 798 (48.7 %) |
![]() | ![]() | 142 | Mouse Clicks (65.5 %) |
![]() | ![]() | 143 | Orchard Trees 2486 ( 3.3 %) |
![]() | ![]() | 144 | Student Grants (52.7 %) |
![]() | ![]() | 145 | Gondwanaland Telecom 1614 (28.4 %) |
![]() | ![]() | 146 | ID Codes 1912 (49.4 %) |
![]() | ![]() | 147 | Dollars 2856 (39.1 %) |
![]() | ![]() | 148 | Anagram checker (34.8 %) |
![]() | ![]() | 149 | Forests (29.9 %) |
![]() | ![]() | 150 | Double Time 553 (17.5 %) |
![]() | ![]() | 151 | Power Crisis (61.5 %) |
![]() | ![]() | 152 | Tree's a Crowd (49.8 %) |
![]() | ![]() | 153 | Permalex 1351 (37.9 %) |
![]() | ![]() | 154 | Recycling 1052 (55.0 %) |
![]() | ![]() | 155 | All Squares (70.2 %) |
![]() | ![]() | 156 | Ananagrams 1221 (46.5 %) |
![]() | ![]() | 157 | Route Finding 622 (26.2 %) |
![]() | ![]() | 158 | Calendar 674 (15.9 %) |
![]() | ![]() | 159 | Word Crosses (51.1 %) |
![]() | ![]() | 160 | Factors and Factorials (39.9 %) |
![]() | ![]() | 161 | Traffic Lights 1272 (32.9 %) |
![]() | ![]() | 162 | Beggar My Neighbour 499 (41.3 %) |
![]() | ![]() | 163 | City Directions 248 (20.2 %) |
![]() | ![]() | 164 | String Computer (21.6 %) |
![]() | ![]() | 165 | Stamps 829 (25.3 %) |
![]() | ![]() | 166 | Making Change 1237 (33.7 %) |
![]() | ![]() | 167 | The Sultan's Successors 1446 (55.1 %) |
![]() | ![]() | 168 | Theseus and the Minotaur 503 (52.5 %) |
![]() | ![]() | 169 | Xenosemantics 877 ( 8.7 %) |
![]() | ![]() | 170 | Clock Patience 855 (46.5 %) |
![]() | ![]() | 171 | Car Trialling 760 (18.7 %) |
![]() | ![]() | 172 | Calculator Language 680 (22.8 %) |
![]() | ![]() | 173 | Network Wars 812 ( 3.1 %) |
![]() | ![]() | 174 | Strategy 303 (31.7 %) |
![]() | ![]() | 175 | Keywords 312 (36.9 %) |
![]() | ![]() | 176 | City Navigation 238 (19.7 %) |
![]() | ![]() | 177 | Paper Folding 428 (59.3 %) |
![]() | ![]() | 178 | Shuffling Patience 269 (42.8 %) |
![]() | ![]() | 179 | Code Breaking 694 (21.5 %) |
![]() | ![]() | 180 | Eeny Meeny 505 (24.0 %) |
![]() | ![]() | 181 | Hearts (51.0 %) |
![]() | ![]() | 182 | Bonus Bonds 220 (51.4 %) |
![]() | ![]() | 183 | Bit Maps 1021 (30.5 %) |
![]() | ![]() | 184 | Laser Lines 659 (42.5 %) |
![]() | ![]() | 185 | Roman Numerals 218 (57.8 %) |
![]() | ![]() | 186 | Trip Routing 609 (42.9 %) |
![]() | ![]() | 187 | Transaction Processing (46.7 %) |
![]() | ![]() | 188 | Perfect Hash (62.0 %) |
![]() | ![]() | 189 | Pascal Program Lengths |
![]() | ![]() | 190 | Circle Through Three Points 2138 (42.0 %) |
![]() | ![]() | 191 | Intersection (15.4 %) |
![]() | ![]() | 192 | Synchronous Design 352 (31.0 %) |
![]() | ![]() | 193 | Graph Coloring (26.8 %) |
![]() | ![]() | 194 | Triangle 686 (12.4 %) |
![]() | ![]() | 195 | Anagram ( 7.8 %) |
![]() | ![]() | 196 | Spreadsheet 1093 (22.7 %) |
![]() | ![]() | 197 | Cube ( 4.0 %)
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![]() | ![]() | 198 | Peter's Calculator 442 (19.7 %) |
![]() | ![]() | 199 | Partial differential equations 282 (18.4 %) |