Problems
| Problem Name | Code | Points | Users | AC Rate | Date Added |
|---|---|---|---|---|---|
| NOI '06 - Network Charges | noi06p1 | 20p | 14 | 24.39% | 2014-07-23 |
| NOI '06 - Millennium Worm | noi06p3 | 25p | 4 | 19.35% | 2014-07-23 |
| NOI '06 - Maximum Profit | noi06p4 | 20p | 35 | 21.59% | 2014-07-23 |
| NOI '06 - The Clever Tour Guide | noi06p5 | 30p | 3 | 2.90% | 2014-07-23 |
| NOI '06 - The Magical Bag | noi06p6 | 20p | 3 | 15.38% | 2014-07-24 |
| NOI '07 - Social Network | noi07p1 | 15p | 49 | 26.70% | 2014-07-24 |
| NOI '07 - Cash Exchange | noi07p2 | 30p | 12 | 8.46% | 2014-07-25 |
| NOI '07 - Surrounding Battalions | noi07p3 | 40p | 0 | 0.00% | 2014-07-26 |
| NOI '07 - Necklace Factory | noi07p4 | 30p | 18 | 13.31% | 2014-07-27 |
| NOI '07 - Counting Spanning Trees | noi07p5 | 30p | 5 | 10.34% | 2014-07-27 |
| NOI '07 - Thief Catching | noi07p6 | 40p | 0 | 0.00% | 2014-07-28 |
| NOI '08 - Masquerade Party | noi08p1 | 25p | 13 | 7.57% | 2014-08-01 |
| NOI '08 - Course Design | noi08p2 | 30p | 7 | 3.35% | 2014-08-01 |
| NOI '08 - Hiring Employees | noi08p3 | 25p | 22 | 40.70% | 2014-08-01 |
| NOI '08 - Olympic Logistics | noi08p4 | 25p | 7 | 23.68% | 2014-08-01 |
| NOI '08 - Candy Rain | noi08p5 | 30p | 7 | 9.72% | 2014-08-01 |
| NOI '08 - Tournament Matching | noi08p6 | 40p | 1 | 1.06% | 2014-08-01 |
| NOI '09 - Transformed Sequence | noi09p1 | 20p | 16 | 25.37% | 2014-08-04 |
| NOI '09 - Little G the Poet | noi09p2 | 25p | 6 | 6.54% | 2014-08-04 |
| NOI '09 - Modified Treap | noi09p3 | 20p | 16 | 18.87% | 2014-08-04 |
| NOI '09 - Plants vs. Zombies | noi09p4 | 25p | 14 | 28.57% | 2014-08-04 |
| NOI '09 - Pipe Marbles | noi09p5 | 17p | 33 | 10.61% | 2014-08-04 |
| NOI '09 - Tracing | noi09p6 | 50p | 0 | 0.00% | 2014-08-04 |
| NOI '10 - Energy Harvesting | noi10p1 | 17p | 25 | 28.26% | 2014-08-07 |
| NOI '10 - Super Piano | noi10p2 | 25p | 48 | 11.79% | 2014-08-07 |
| NOI '10 - Altitude | noi10p3 | 20p | 5 | 15.91% | 2014-08-07 |
| NOI '10 - Flight Control | noi10p4 | 20p | 10 | 17.19% | 2014-08-08 |
| NOI '10 - Route Planning | noi10p5 | 35p | 2 | 13.33% | 2014-08-08 |
| NOI '10 - Happily Growing | noi10p6 | 50p | 0 | - | 2014-08-08 |
| NOI '11 - Rabbit Farming | noi11p1 | 20p | 4 | 9.62% | 2014-08-10 |
| NOI '11 - Intelligent Car Racing | noi11p2 | 25p | 6 | 12.70% | 2014-08-10 |
| NOI '11 - Ali's Typewriter | noi11p3 | 30p | 21 | 32.58% | 2014-08-10 |
| NOI '11 - Road Construction | noi11p4 | 15p | 55 | 41.89% | 2014-08-10 |
| NOI '11 - NOI Carnival | noi11p5 | 25p | 11 | 14.29% | 2014-08-10 |
| NOI '11 - Bunny and Eggy's Game | noi11p6 | 25p | 5 | 12.00% | 2014-08-10 |
| NOI '12 - Random Number Generator | noi12p1 | 15p | 33 | 19.49% | 2014-08-13 |
| NOI '12 - Highway Cycling | noi12p2 | 25p | 10 | 13.91% | 2014-08-13 |
| NOI '12 - Magic Chessboard | noi12p3 | 40p | 6 | 3.73% | 2014-08-13 |
| NOI '12 - Lost in the Park | noi12p4 | 20p | 7 | 9.64% | 2014-08-13 |
| NOI '12 - Food Festival | noi12p5 | 30p | 4 | 11.67% | 2014-08-13 |
| NOI '12 - Triple Town | noi12p6 | 40p | 0 | 0.00% | 2014-08-19 |
| NOI '13 - Inner Product | noi13p1 | 20p | 8 | 5.56% | 2015-05-18 |
| NOI '13 - Tree Count | noi13p2 | 25p | 13 | 8.95% | 2015-05-18 |
| NOI '13 - Little Q's Training | noi13p3 | 25p | 0 | - | 2015-05-18 |
| NOI '13 - Matrix Game | noi13p4 | 20p | 15 | 21.92% | 2015-05-18 |
| NOI '13 - Calligrapher | noi13p5 | 30p | 2 | 26.32% | 2015-05-18 |
| NOI '13 - Fast Food Restaurant | noi13p6 | 30p | 4 | 15.56% | 2015-05-18 |
| NOI '14 - Getting-Up Syndrome | noi14p1 | 10p | 62 | 24.12% | 2015-05-19 |
| NOI '14 - Enchanted Forest | noi14p2 | 20p | 40 | 9.92% | 2015-05-19 |
| NOI '14 - Deletion Game | noi14p3 | 30p | 0 | 0.00% | 2015-05-19 |
