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Gold Sponsors
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Bronze Sponsors
Christianto Handojo
Krzysztof Adamek
Fatima Broom
Browse Problems
	
	| Title | Total Submissions / Solving % | Total Users / Solving % | ||||
| 
			                                 | 
			12100 - Printer Queue | 15199 | 
			
			
	 64.30% 
	 | 
									3817 | 
	 94.03% 
	 | 
                        		|
| 
			                                 | 
			12101 - Prime Path | 2213 | 
			
			
	 73.79% 
	 | 
									897 | 
	 95.32% 
	 | 
                        		|
| 
			                                 | 
			12102 - Lineland's Airport | 23 | 
			
			
	 56.52% 
	 | 
									16 | 
	 75.00% 
	 | 
                        		|
| 
			                                 | 
			12103 - Leonardo's Notebook | 771 | 
			
			
	 52.27% 
	 | 
									306 | 
	 92.16% 
	 | 
                        		|
| 
			                                 | 
			12104 - A Rod in a Path | 31 | 
			
			
	 22.58% 
	 | 
									11 | 
	 45.45% 
	 | 
                        		|
| 
			                                 | 
			12105 - Bigger is Better | 2659 | 
			
			
	 35.16% 
	 | 
									387 | 
	 84.50% 
	 | 
                        		|
| 
			                                 | 
			12106 - Collapse!! | 96 | 
			
			
	 6.25% 
	 | 
									14 | 
	 28.57% 
	 | 
                        		|
| 
			                                 | 
			12107 - Digit Puzzle | 1228 | 
			
			
	 44.06% 
	 | 
									184 | 
	 84.24% 
	 | 
                        		|
| 
			                                 | 
			12108 - Extraordinarily Tired Students | 7227 | 
			
			
	 44.20% 
	 | 
									1170 | 
	 92.14% 
	 | 
                        		|
| 
			                                 | 
			12109 - Fairies' Defence | 286 | 
			
			
	 33.92% 
	 | 
									52 | 
	 73.08% 
	 | 
                        		|
| 
			                                 | 
			12110 - Gargoyle | 63 | 
			
			
	 33.33% 
	 | 
									24 | 
	 54.17% 
	 | 
                        		|
| 
			                                 | 
			12111 - Hidden Music Score | 72 | 
			
			
	 26.39% 
	 | 
									19 | 
	 63.16% 
	 | 
                        		|
| 
			                                 | 
			12112 - Iceman | 264 | 
			
			
	 29.55% 
	 | 
									60 | 
	 81.67% 
	 | 
                        		|
| 
			                                 | 
			12113 - Overlapping Squares | 1390 | 
			
			
	 46.69% 
	 | 
									224 | 
	 91.52% 
	 | 
                        		|
| 
			                                 | 
			12114 - Bachelor Arithmetic | 4428 | 
			
			
	 39.86% 
	 | 
									1460 | 
	 90.62% 
	 | 
                        		|
| 
			                                 | 
			12115 - Nested Squares | 393 | 
			
			
	 62.09% 
	 | 
									164 | 
	 93.29% 
	 | 
                        		|
| 
			                                 | 
			12116 - The Dumb Grocer | 215 | 
			
			
	 28.37% 
	 | 
									51 | 
	 74.51% 
	 | 
                        		|
| 
			                                 | 
			12117 - ACM Puzzles | 274 | 
			
			
	 69.71% 
	 | 
									133 | 
	 95.49% 
	 | 
                        		|
| 
			                                 | 
			12118 - Inspector's Dilemma | 3772 | 
			
			
	 35.37% 
	 | 
									483 | 
	 86.13% 
	 | 
                        		|
| 
			                                 | 
			12119 - The Bells are Ringing | 630 | 
			
			
	 30.32% 
	 | 
									114 | 
	 83.33% 
	 | 
                        		|
| 
			                                 | 
			12120 - Photographic Tour | 323 | 
			
			
	 32.51% 
	 | 
									90 | 
	 71.11% 
	 | 
                        		|
| 
			                                 | 
			12121 - You are around me ... | 217 | 
			
			
	 39.63% 
	 | 
									59 | 
	 83.05% 
	 | 
                        		|
| 
			                                 | 
			12122 - Infinite Matrix | 16 | 
			
			
	 68.75% 
	 | 
									14 | 
	 71.43% 
	 | 
                        		|
| 
			                                 | 
			12123 - Magnetic Train Tracks | 553 | 
			
			
	 36.17% 
	 | 
									113 | 
	 79.65% 
	 | 
                        		|
| 
			                                 | 
			12124 - Assemble | 4729 | 
			
			
	 45.78% 
	 | 
									1019 | 
	 89.11% 
	 | 
                        		|
| 
			                                 | 
			12125 - March of the Penguins | 3110 | 
			
			
	 47.59% 
	 | 
									892 | 
	 92.71% 
	 | 
                        		|
| 
			                                 | 
			12126 - Containers | 339 | 
			
			
	 30.09% 
	 | 
									96 | 
	 67.71% 
	 | 
                        		|
| 
			                                 | 
			12127 - Youth Hostel Dorm | 36 | 
			
			
	 38.89% 
	 | 
									18 | 
	 77.78% 
	 | 
                        		|
| 
			                                 | 
			12128 - Escape from Enemy Territory | 530 | 
			
			
	 34.72% 
	 | 
									129 | 
	 79.07% 
	 | 
                        		|
| 
			                                 | 
			12129 - Flight Safety | 43 | 
			
			
	 32.56% 
	 | 
									24 | 
	 50.00% 
	 | 
                        		|
| 
			                                 | 
			12130 - Summits | 316 | 
			
			
	 46.20% 
	 | 
									103 | 
	 82.52% 
	 | 
                        		|
| 
			                                 | 
			12131 - Obfuscation | 464 | 
			
			
	 31.47% 
	 | 
									102 | 
	 82.35% 
	 | 
                        		|
| 
			                                 | 
			12132 - Tower Parking | 209 | 
			
			
	 66.51% 
	 | 
									119 | 
	 91.60% 
	 | 
                        		|
| 
			                                 | 
			12133 - Walk | 45 | 
			
			
	 37.78% 
	 | 
									20 | 
	 60.00% 
	 | 
                        		|
| 
			                                 | 
			12134 - Find the Format String | 824 | 
			
			
	 32.04% 
	 | 
									155 | 
	 74.19% 
	 | 
                        		|
| 
			                                 | 
			12135 - Switch Bulbs | 1722 | 
			
			
	 47.50% 
	 | 
									372 | 
	 90.32% 
	 | 
                        		|
| 
			                                 | 
			12136 - Schedule of a Married Man | 6417 | 
			
			
	 45.15% 
	 | 
									2174 | 
	 91.81% 
	 | 
                        		|
| 
			                                 | 
			12137 - Puzzles of Triangles | 341 | 
			
			
	 54.55% 
	 | 
									104 | 
	 89.42% 
	 | 
                        		|
| 
			                                 | 
			12138 - Chemical Plant | 226 | 
			
			
	 23.89% 
	 | 
									52 | 
	 69.23% 
	 | 
                        		|
| 
			                                 | 
			12139 - Clicking Checkboxes | 145 | 
			
			
	 63.45% 
	 | 
									58 | 
	 86.21% 
	 | 
                        		|
| 
			                                 | 
			12140 - Magic Rings | 260 | 
			
			
	 27.69% 
	 | 
									47 | 
	 65.96% 
	 | 
                        		|
| 
			                                 | 
			12141 - Line Chart | 415 | 
			
			
	 26.99% 
	 | 
									97 | 
	 73.20% 
	 | 
                        		|
| 
			                                 | 
			12142 - Mobile Tower | 53 | 
			
			
	 33.96% 
	 | 
									20 | 
	 65.00% 
	 | 
                        		|
| 
			                                 | 
			12143 - Stopping Doom's Day | 253 | 
			
			
	 60.87% 
	 | 
									112 | 
	 88.39% 
	 | 
                        		|
| 
			                                 | 
			12144 - Almost Shortest Path | 3408 | 
			
			
	 45.75% 
	 | 
									798 | 
	 87.34% 
	 | 
                        		|
| 
			                                 | 
			12145 - Bases | 197 | 
			
			
	 22.84% 
	 | 
									44 | 
	 68.18% 
	 | 
                        		|
| 
			                                 | 
			12146 - Candy | 1142 | 
			
			
	 56.04% 
	 | 
									343 | 
	 87.76% 
	 | 
                        		|
| 
			                                 | 
			12147 - DNA Sequences | 687 | 
			
			
	 39.59% 
	 | 
									198 | 
	 79.29% 
	 | 
                        		|
| 
			                                 | 
			12148 - Electricity | 5108 | 
			
			
	 45.22% 
	 | 
									1859 | 
	 89.73% 
	 | 
                        		|
| 
			                                 | 
			12149 - Feynman | 16851 | 
			
			
	 76.99% 
	 | 
									8656 | 
	 98.46% 
	 | 
                        		|
| 
			                                 | 
			12150 - Pole Position | 6762 | 
			
			
	 38.04% 
	 | 
									1922 | 
	 90.89% 
	 | 
                        		|
| 
			                                 | 
			12151 - Higgs Boson | 158 | 
			
			
	 13.92% 
	 | 
									36 | 
	 47.22% 
	 | 
                        		|
| 
			                                 | 
			12152 - Traveling Shoemaker Problem | 145 | 
			
			
	 20.00% 
	 | 
									43 | 
	 55.81% 
	 | 
                        		|
| 
			                                 | 
			12153 - Bora Bora | 221 | 
			
			
	 37.56% 
	 | 
									80 | 
	 75.00% 
	 | 
                        		|
| 
			                                 | 
			12154 - Shrinking Polygons | 324 | 
			
			
	 50.62% 
	 | 
									112 | 
	 79.46% 
	 | 
                        		|
| 
			                                 | 
			12155 - ASCII Diamondi | 515 | 
			
			
	 66.99% 
	 | 
									244 | 
	 94.67% 
	 | 
                        		|
| 
			                                 | 
			12156 - Match Maker | 87 | 
			
			
	 27.59% 
	 | 
									31 | 
	 54.84% 
	 | 
                        		|
| 
			                                 | 
			12157 - Tariff Plan | 14288 | 
			
			
	 61.05% 
	 | 
									7429 | 
	 96.15% 
	 | 
                        		|
| 
			                                 | 
			12158 - Irreducible Fractions | 88 | 
			
			
	 31.82% 
	 | 
									34 | 
	 67.65% 
	 | 
                        		|
| 
			                                 | 
			12159 - Gun Fight | 674 | 
			
			
	 35.01% 
	 | 
									214 | 
	 84.11% 
	 | 
                        		|
| 
			                                 | 
			12160 - Unlock the Lock | 4577 | 
			
			
	 70.44% 
	 | 
									1862 | 
	 97.42% 
	 | 
                        		|
| 
			                                 | 
			12161 - Ironman Race in Treeland | 960 | 
			
			
	 39.38% 
	 | 
									150 | 
	 86.67% 
	 | 
                        		|
| 
			                                 | 
			12162 - Shooting the Monster | 89 | 
			
			
	 13.48% 
	 | 
									26 | 
	 30.77% 
	 | 
                        		|
| 
			                                 | 
			12163 - Addition-Subtraction Game | 386 | 
			
			
	 32.12% 
	 | 
									55 | 
	 90.91% 
	 | 
                        		|
| 
			                                 | 
			12164 - The Great Game | 147 | 
			
			
	 21.77% 
	 | 
									46 | 
	 52.17% 
	 | 
                        		|
| 
			                                 | 
			12165 - Triangle Hazard | 266 | 
			
			
	 75.19% 
	 | 
									92 | 
	 96.74% 
	 | 
                        		|
| 
			                                 | 
			12166 - Equilibrium Mobile | 4602 | 
			
			
	 43.16% 
	 | 
									682 | 
	 92.23% 
	 | 
                        		|
| 
			                                 | 
			12167 - Proving Equivalences | 2882 | 
			
			
	 37.68% 
	 | 
									653 | 
	 90.51% 
	 | 
                        		|
| 
			                                 | 
			12168 - Cat vs. Dog | 1472 | 
			
			
	 46.26% 
	 | 
									448 | 
	 87.95% 
	 | 
                        		|
| 
			                                 | 
			12169 - Disgruntled Judge | 4311 | 
			
			
	 60.29% 
	 | 
									734 | 
	 94.41% 
	 | 
                        		|
| 
			                                 | 
			12170 - Easy Climb | 1743 | 
			
			
	 38.38% 
	 | 
									303 | 
	 88.12% 
	 | 
                        		|
| 
			                                 | 
			12171 - Sculpture | 2533 | 
			
			
	 46.39% 
	 | 
									451 | 
	 86.03% 
	 | 
                        		|
| 
			                                 | 
			12172 - Matchsticks | 732 | 
			
			
	 45.22% 
	 | 
									243 | 
	 88.89% 
	 | 
                        		|
| 
			                                 | 
			12173 - White Water Rafting | 154 | 
			
			
	 51.95% 
	 | 
									74 | 
	 87.84% 
	 | 
                        		|
| 
			                                 | 
			12174 - Shuffle | 3150 | 
			
			
	 42.38% 
	 | 
									509 | 
	 89.98% 
	 | 
                        		|
| 
			                                 | 
			12175 - Videopoker | 64 | 
			
			
	 45.31% 
	 | 
									30 | 
	 60.00% 
	 | 
                        		|
| 
			                                 | 
			12176 - Bring Your Own Horse | 1352 | 
			
			
	 37.20% 
	 | 
									303 | 
	 77.89% 
	 | 
                        		|
| 
			                                 | 
			12177 - First Knight | 579 | 
			
			
	 36.61% 
	 | 
									95 | 
	 77.89% 
	 | 
                        		|
| 
			                                 | 
			12178 - Postal Charges | 288 | 
			
			
	 34.72% 
	 | 
									90 | 
	 71.11% 
	 | 
                        		|
| 
			                                 | 
			12179 - Randomly-priced Tickets | 787 | 
			
			
	 52.22% 
	 | 
									131 | 
	 87.79% 
	 | 
                        		|
| 
			                                 | 
			12180 - The Game | 53 | 
			
			
	 56.60% 
	 | 
									30 | 
	 70.00% 
	 | 
                        		|
| 
			                                 | 
			12181 - The Merchant Guild | 54 | 
			
			
	 57.41% 
	 | 
									28 | 
	 71.43% 
	 | 
                        		|
| 
			                                 | 
			12182 - Toll Road | 676 | 
			
			
	 28.85% 
	 | 
									153 | 
	 76.47% 
	 | 
                        		|
| 
			                                 | 
			12183 - Top Secret | 1319 | 
			
			
	 46.40% 
	 | 
									82 | 
	 78.05% 
	 | 
                        		|
| 
			                                 | 
			12184 - Transcribed Books | 1787 | 
			
			
	 23.67% 
	 | 
									303 | 
	 82.84% 
	 | 
                        		|
| 
			                                 | 
			12185 - Wizards | 447 | 
			
			
	 14.99% 
	 | 
									63 | 
	 73.02% 
	 | 
                        		|
| 
			                                 | 
			12186 - Another Crisis | 7067 | 
			
			
	 60.85% 
	 | 
									1488 | 
	 96.71% 
	 | 
                        		|
| 
			                                 | 
			12187 - Brothers | 2299 | 
			
			
	 57.33% 
	 | 
									909 | 
	 94.72% 
	 | 
                        		|
| 
			                                 | 
			12188 - Code Lock | 393 | 
			
			
	 36.39% 
	 | 
									95 | 
	 61.05% 
	 | 
                        		|
| 
			                                 | 
			12189 - Dinner Hall | 291 | 
			
			
	 62.54% 
	 | 
									145 | 
	 90.34% 
	 | 
                        		|
| 
			                                 | 
			12190 - Electric Bill | 3136 | 
			
			
	 43.56% 
	 | 
									885 | 
	 89.94% 
	 | 
                        		|
| 
			                                 | 
			12191 - File Recover | 701 | 
			
			
	 43.08% 
	 | 
									214 | 
	 83.64% 
	 | 
                        		|
| 
			                                 | 
			12192 - Grapevine | 7741 | 
			
			
	 38.48% 
	 | 
									1839 | 
	 87.66% 
	 | 
                        		|
| 
			                                 | 
			12193 - Hooligan | 223 | 
			
			
	 47.09% 
	 | 
									76 | 
	 84.21% 
	 | 
                        		|
| 
			                                 | 
			12194 - Isosceles Triangles | 950 | 
			
			
	 36.32% 
	 | 
									256 | 
	 76.56% 
	 | 
                        		|
| 
			                                 | 
			12195 - Jingle Composing | 4327 | 
			
			
	 70.88% 
	 | 
									1950 | 
	 97.18% 
	 | 
                        		|
| 
			                                 | 
			12196 - Klingon Levels | 231 | 
			
			
	 62.34% 
	 | 
									119 | 
	 82.35% 
	 | 
                        		|
| 
			                                 | 
			12197 - Trick or Treat | 1465 | 
			
			
	 40.68% 
	 | 
									341 | 
	 81.23% 
	 | 
                        		|
| 
			                                 | 
			12198 - Working at the Restaurant | 442 | 
			
			
	 40.50% 
	 | 
									146 | 
	 85.62% 
	 | 
                        		|
| 
			                                 | 
			12199 - Lights | 85 | 
			
			
	 51.76% 
	 | 
									37 | 
	 81.08% 
	 | 
                        		|
| << Start < Prev 1 Next > End >> | ||
| Display # | Results 1 - 100 of 100 | |
	
   Browse Problems 

