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Diamond Sponsors
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Reinardus Pradhitya
Gold Sponsors
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Bronze Sponsors
Christianto Handojo
Krzysztof Adamek
Fatima Broom
Browse Problems
	
	| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
| 
			                                 | 
			10900 - So you want to be a 2n-aire? | 1722 | 
			
			
	 78.69% 
	 | 
									778 | 
	 93.32% 
	 | 
                        		|
| 
			                                 | 
			10901 - Ferry Loading III | 14102 | 
			
			
	 30.79% 
	 | 
									3482 | 
	 80.82% 
	 | 
                        		|
| 
			                                 | 
			10902 - Pick-up Sticks | 5077 | 
			
			
	 38.98% 
	 | 
									1222 | 
	 83.06% 
	 | 
                        		|
| 
			                                 | 
			10903 - Rock-Paper-Scissors Tournament | 12137 | 
			
			
	 32.02% 
	 | 
									2793 | 
	 83.60% 
	 | 
                        		|
| 
			                                 | 
			10904 - Structural Equivalence | 496 | 
			
			
	 35.69% 
	 | 
									131 | 
	 70.99% 
	 | 
                        		|
| 
			                                 | 
			10905 - Children's Game | 30757 | 
			
			
	 32.28% 
	 | 
									6281 | 
	 77.52% 
	 | 
                        		|
| 
			                                 | 
			10906 - Strange Integration | 869 | 
			
			
	 46.61% 
	 | 
									380 | 
	 86.84% 
	 | 
                        		|
| 
			                                 | 
			10907 - Art Gallery | 790 | 
			
			
	 20.89% 
	 | 
									170 | 
	 64.12% 
	 | 
                        		|
| 
			                                 | 
			10908 - Largest Square | 14607 | 
			
			
	 42.14% 
	 | 
									4048 | 
	 91.65% 
	 | 
                        		|
| 
			                                 | 
			10909 - Lucky Number | 4145 | 
			
			
	 32.55% 
	 | 
									658 | 
	 73.56% 
	 | 
                        		|
| 
			                                 | 
			10910 - Marks Distribution | 6758 | 
			
			
	 52.29% 
	 | 
									2505 | 
	 93.21% 
	 | 
                        		|
| 
			                                 | 
			10911 - Forming Quiz Teams | 15337 | 
			
			
	 48.20% 
	 | 
									4710 | 
	 86.28% 
	 | 
                        		|
| 
			                                 | 
			10912 - Simple Minded Hashing | 7796 | 
			
			
	 40.53% 
	 | 
									2105 | 
	 89.45% 
	 | 
                        		|
| 
			                                 | 
			10913 - Walking on a Grid | 4075 | 
			
			
	 38.82% 
	 | 
									1243 | 
	 84.71% 
	 | 
                        		|
| 
			                                 | 
			10914 - Abundance and Perfect Numbers | 1404 | 
			
			
	 43.16% 
	 | 
									355 | 
	 78.87% 
	 | 
                        		|
| 
			                                 | 
			10915 - War on Weather | 871 | 
			
			
	 53.04% 
	 | 
									353 | 
	 91.50% 
	 | 
                        		|
| 
			                                 | 
			10916 - Factstone Benchmark | 5095 | 
			
			
	 62.79% 
	 | 
									2371 | 
	 94.69% 
	 | 
                        		|
| 
			                                 | 
			10917 - Walk Through the Forest | 7362 | 
			
			
	 39.76% 
	 | 
									1428 | 
	 85.29% 
	 | 
                        		|
| 
			                                 | 
			10918 - Tri Tiling | 5709 | 
			
			
	 60.05% 
	 | 
									2421 | 
	 96.32% 
	 | 
                        		|
| 
			                                 | 
			10919 - Prerequisites? | 6649 | 
			
			
	 68.31% 
	 | 
									3516 | 
	 96.27% 
	 | 
                        		|
| 
			                                 | 
			10920 - Spiral Tap | 9241 | 
			
			
	 44.97% 
	 | 
									3408 | 
	 88.62% 
	 | 
                        		|
| 
			                                 | 
			10921 - Find the Telephone | 25748 | 
			
			
	 60.12% 
	 | 
									12399 | 
	 96.46% 
	 | 
                        		|
| 
			                                 | 
			10922 - 2 the 9s | 21056 | 
			
			
	 52.83% 
	 | 
									7801 | 
	 94.17% 
	 | 
                        		|
| 
			                                 | 
			10923 - Seven Seas | 1152 | 
			
			
	 22.40% 
	 | 
									319 | 
	 54.86% 
	 | 
                        		|
| 
			                                 | 
			10924 - Prime Words | 46652 | 
			
			
	 39.01% 
	 | 
									12039 | 
	 93.22% 
	 | 
                        		|
| 
			                                 | 
			10925 - Krakovia | 9411 | 
			
			
	 37.13% 
	 | 
									2944 | 
	 88.18% 
	 | 
                        		|
| 
			                                 | 
			10926 - How Many Dependencies? | 9712 | 
			
			
	 36.80% 
	 | 
									2512 | 
	 88.69% 
	 | 
                        		|
| 
			                                 | 
			10927 - Bright Lights | 5535 | 
			
			
	 28.67% 
	 | 
									1149 | 
	 82.16% 
	 | 
                        		|
| 
			                                 | 
			10928 - My Dear Neighbours | 9312 | 
			
			
	 43.01% 
	 | 
									2732 | 
	 90.52% 
	 | 
                        		|
| 
			                                 | 
			10929 - You can say 11 | 59747 | 
			
			
	 35.50% 
	 | 
									15468 | 
	 87.56% 
	 | 
                        		|
| 
			                                 | 
			10930 - A-Sequence | 8487 | 
			
			
	 23.97% 
	 | 
									1896 | 
	 74.63% 
	 | 
                        		|
| 
			                                 | 
			10931 - Parity | 33186 | 
			
			
	 57.99% 
	 | 
									12385 | 
	 96.27% 
	 | 
                        		|
| 
			                                 | 
			10932 - Calculator | 1407 | 
			
			
	 25.59% 
	 | 
									347 | 
	 67.72% 
	 | 
                        		|
| 
			                                 | 
			10933 - Volleyball | 1239 | 
			
			
	 25.83% 
	 | 
									355 | 
	 71.83% 
	 | 
                        		|
| 
			                                 | 
			10934 - Dropping water balloons | 4792 | 
			
			
	 44.85% 
	 | 
									1001 | 
	 90.51% 
	 | 
                        		|
| 
			                                 | 
			10935 - Throwing cards away I | 86538 | 
			
			
	 30.32% 
	 | 
									11713 | 
	 87.58% 
	 | 
                        		|
| 
			                                 | 
			10936 - Land surveyor's job | 595 | 
			
			
	 25.38% 
	 | 
									174 | 
	 70.69% 
	 | 
                        		|
| 
			                                 | 
			10937 - Blackbeard the Pirate | 4186 | 
			
			
	 37.70% 
	 | 
									732 | 
	 87.84% 
	 | 
                        		|
| 
			                                 | 
			10938 - Flea circus | 5997 | 
			
			
	 37.65% 
	 | 
									1323 | 
	 88.36% 
	 | 
                        		|
| 
			                                 | 
			10939 - Ants, Aphids and a Ladybug | 576 | 
			
			
	 23.78% 
	 | 
									112 | 
	 66.07% 
	 | 
                        		|
| 
			                                 | 
			10940 - Throwing cards away II | 12508 | 
			
			
	 49.62% 
	 | 
									4371 | 
	 86.11% 
	 | 
                        		|
| 
			                                 | 
			10941 - Words adjustment | 811 | 
			
			
	 27.74% 
	 | 
									172 | 
	 69.77% 
	 | 
                        		|
| 
			                                 | 
			10942 - Can of Beans | 1325 | 
			
			
	 45.58% 
	 | 
									527 | 
	 87.10% 
	 | 
                        		|
| 
			                                 | 
			10943 - How do you add? | 20726 | 
			
			
	 49.27% 
	 | 
									6096 | 
	 93.80% 
	 | 
                        		|
| 
			                                 | 
			10944 - Nuts for nuts.. | 4253 | 
			
			
	 36.61% 
	 | 
									943 | 
	 85.26% 
	 | 
                        		|
| 
			                                 | 
			10945 - Mother bear | 30556 | 
			
			
	 46.19% 
	 | 
									9863 | 
	 93.45% 
	 | 
                        		|
| 
			                                 | 
			10946 - You want what filled? | 11796 | 
			
			
	 41.98% 
	 | 
									3486 | 
	 94.00% 
	 | 
                        		|
| 
			                                 | 
			10947 - Bear with me, again.. | 2228 | 
			
			
	 55.70% 
	 | 
									802 | 
	 91.15% 
	 | 
                        		|
| 
			                                 | 
			10948 - The primary problem | 14216 | 
			
			
	 42.97% 
	 | 
									4268 | 
	 91.05% 
	 | 
                        		|
| 
			                                 | 
			10949 - Kids in a Grid | 3902 | 
			
			
	 15.53% 
	 | 
									439 | 
	 43.28% 
	 | 
                        		|
| 
			                                 | 
			10950 - Bad Code | 2959 | 
			
			
	 27.00% 
	 | 
									617 | 
	 82.66% 
	 | 
                        		|
| 
			                                 | 
			10951 - Polynomial GCD | 996 | 
			
			
	 38.55% 
	 | 
									226 | 
	 84.07% 
	 | 
                        		|
| 
			                                 | 
			10952 - Pattern Transformations | 311 | 
			
			
	 32.48% 
	 | 
									61 | 
	 77.05% 
	 | 
                        		|
| 
			                                 | 
			10953 - Stochastic Digit Generator | 576 | 
			
			
	 42.53% 
	 | 
									237 | 
	 79.32% 
	 | 
                        		|
| 
			                                 | 
			10954 - Add All | 61158 | 
			
			
	 42.86% 
	 | 
									14458 | 
	 85.57% 
	 | 
                        		|
| 
			                                 | 
			10955 - Playfair Cipher | 179 | 
			
			
	 20.67% 
	 | 
									27 | 
	 59.26% 
	 | 
                        		|
| 
			                                 | 
			10956 - Prime Suspect | 964 | 
			
			
	 42.01% 
	 | 
									199 | 
	 71.36% 
	 | 
                        		|
| 
			                                 | 
			10957 - So Doku Checker | 2991 | 
			
			
	 50.42% 
	 | 
									718 | 
	 88.30% 
	 | 
                        		|
| 
			                                 | 
			10958 - How Many Solutions? | 1837 | 
			
			
	 35.71% 
	 | 
									463 | 
	 83.59% 
	 | 
                        		|
| 
			                                 | 
			10959 - The Party, Part I | 9740 | 
			
			
	 44.58% 
	 | 
									2961 | 
	 91.79% 
	 | 
                        		|
| 
			                                 | 
			10960 - The Party, Part II | 329 | 
			
			
	 33.43% 
	 | 
									103 | 
	 73.79% 
	 | 
                        		|
| 
			                                 | 
			10961 - Chasing After Don Giovanni | 634 | 
			
			
	 35.33% 
	 | 
									204 | 
	 77.94% 
	 | 
                        		|
| 
			                                 | 
			10962 - Don Giovanni's Last Dinner | 565 | 
			
			
	 28.85% 
	 | 
									181 | 
	 72.93% 
	 | 
                        		|
| 
			                                 | 
			10963 - The Swallowing Ground | 24393 | 
			
			
	 28.51% 
	 | 
									5936 | 
	 89.29% 
	 | 
                        		|
| 
			                                 | 
			10964 - Strange Planet | 1123 | 
			
			
	 48.00% 
	 | 
									480 | 
	 90.21% 
	 | 
                        		|
| 
			                                 | 
			10965 - Khepel's Problem | 491 | 
			
			
	 25.87% 
	 | 
									132 | 
	 67.42% 
	 | 
                        		|
| 
			                                 | 
			10966 - 3KP-BASH Project | 777 | 
			
			
	 12.74% 
	 | 
									74 | 
	 64.86% 
	 | 
                        		|
| 
			                                 | 
			10967 - The Great Escape | 1157 | 
			
			
	 29.04% 
	 | 
									247 | 
	 82.59% 
	 | 
                        		|
| 
			                                 | 
			10968 - KuPellaKeS | 1409 | 
			
			
	 29.95% 
	 | 
									311 | 
	 79.74% 
	 | 
                        		|
| 
			                                 | 
			10969 - Sweet Dream | 1088 | 
			
			
	 29.50% 
	 | 
									189 | 
	 55.56% 
	 | 
                        		|
| 
			                                 | 
			10970 - Big Chocolate | 35515 | 
			
			
	 67.98% 
	 | 
									16222 | 
	 97.39% 
	 | 
                        		|
| 
			                                 | 
			10971 - Building Construction | 108 | 
			
			
	 8.33% 
	 | 
									41 | 
	 19.51% 
	 | 
                        		|
| 
			                                 | 
			10972 - RevolC FaeLoN | 2672 | 
			
			
	 36.68% 
	 | 
									332 | 
	 83.13% 
	 | 
                        		|
| 
			                                 | 
			10973 - Triangle Counting | 2848 | 
			
			
	 33.18% 
	 | 
									641 | 
	 81.59% 
	 | 
                        		|
| 
			                                 | 
			10974 - The Ridiculous Game | 168 | 
			
			
	 7.14% 
	 | 
									30 | 
	 26.67% 
	 | 
                        		|
| 
			                                 | 
			10975 - Dueue's Quiz | 1470 | 
			
			
	 20.20% 
	 | 
									156 | 
	 57.05% 
	 | 
                        		|
| 
			                                 | 
			10976 - Fractions Again?! | 28446 | 
			
			
	 49.37% 
	 | 
									7189 | 
	 94.32% 
	 | 
                        		|
| 
			                                 | 
			10977 - Enchanted Forest | 6716 | 
			
			
	 28.89% 
	 | 
									1095 | 
	 87.03% 
	 | 
                        		|
| 
			                                 | 
			10978 - Let's Play Magic! | 4945 | 
			
			
	 50.05% 
	 | 
									1850 | 
	 92.27% 
	 | 
                        		|
| 
			                                 | 
			10979 - How Many Triangles? | 613 | 
			
			
	 29.53% 
	 | 
									180 | 
	 76.67% 
	 | 
                        		|
| 
			                                 | 
			10980 - Lowest Price in Town | 5537 | 
			
			
	 34.59% 
	 | 
									1170 | 
	 88.38% 
	 | 
                        		|
| 
			                                 | 
			10981 - String Morphing | 1096 | 
			
			
	 25.46% 
	 | 
									239 | 
	 64.85% 
	 | 
                        		|
| 
			                                 | 
			10982 - Troublemakers | 2259 | 
			
			
	 38.03% 
	 | 
									526 | 
	 84.79% 
	 | 
                        		|
| 
			                                 | 
			10983 - Buy one, get the rest free | 2473 | 
			
			
	 37.04% 
	 | 
									597 | 
	 83.25% 
	 | 
                        		|
| 
			                                 | 
			10984 - Double NP-hard | 1124 | 
			
			
	 21.98% 
	 | 
									251 | 
	 58.17% 
	 | 
                        		|
| 
			                                 | 
			10985 - Rings'n'Ropes | 1194 | 
			
			
	 49.41% 
	 | 
									337 | 
	 86.94% 
	 | 
                        		|
| 
			                                 | 
			10986 - Sending email | 44765 | 
			
			
	 42.46% 
	 | 
									8817 | 
	 89.29% 
	 | 
                        		|
| 
			                                 | 
			10987 - Antifloyd | 1754 | 
			
			
	 33.07% 
	 | 
									491 | 
	 82.28% 
	 | 
                        		|
| 
			                                 | 
			10988 - From G to H and back | 429 | 
			
			
	 11.66% 
	 | 
									112 | 
	 29.46% 
	 | 
                        		|
| 
			                                 | 
			10989 - Bomb, Divide and Conquer | 2438 | 
			
			
	 35.36% 
	 | 
									514 | 
	 81.13% 
	 | 
                        		|
| 
			                                 | 
			10990 - Another New Function | 4506 | 
			
			
	 64.00% 
	 | 
									1495 | 
	 95.52% 
	 | 
                        		|
| 
			                                 | 
			10991 - Region | 3343 | 
			
			
	 72.00% 
	 | 
									1746 | 
	 96.91% 
	 | 
                        		|
| 
			                                 | 
			10992 - The Ghost of Programmers | 2957 | 
			
			
	 25.13% 
	 | 
									809 | 
	 72.19% 
	 | 
                        		|
| 
			                                 | 
			10993 - Ignoring Digits | 1092 | 
			
			
	 34.98% 
	 | 
									302 | 
	 75.50% 
	 | 
                        		|
| 
			                                 | 
			10994 - Simple Addition | 12015 | 
			
			
	 29.36% 
	 | 
									2745 | 
	 64.88% 
	 | 
                        		|
| 
			                                 | 
			10995 - Educational Journey | 299 | 
			
			
	 57.86% 
	 | 
									151 | 
	 88.74% 
	 | 
                        		|
| 
			                                 | 
			10996 - Go | 224 | 
			
			
	 48.66% 
	 | 
									110 | 
	 81.82% 
	 | 
                        		|
| 
			                                 | 
			10997 - Medals | 658 | 
			
			
	 39.67% 
	 | 
									246 | 
	 83.33% 
	 | 
                        		|
| 
			                                 | 
			10998 - Flipping Colors | 611 | 
			
			
	 58.92% 
	 | 
									327 | 
	 91.44% 
	 | 
                        		|
| 
			                                 | 
			10999 - Crabbles | 2022 | 
			
			
	 34.72% 
	 | 
									467 | 
	 78.37% 
	 | 
                        		|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |
	
   Browse Problems 

