Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users
NOI '17 P3 - Pool China NOI 30p 30.6% 6
NOI '17 P4 - Game China NOI 25p 27.3% 5
NOI '17 P5 - Vegetables China NOI 25p 70.0% 7
NOI '17 P6 - Magic China NOI 40p 25.0% 2
NOI '18 P1 - Return China NOI 17p 20.3% 13
NOI '18 P2 - Inverse China NOI 25p 13.5% 5
NOI '18 P3 - Name China NOI 25p 5.5% 3
NOI '19 P1 - Route China NOI 25p 12.4% 58
NOI '19 P2 - Robot China NOI 25p 6.5% 8
NOI '19 P3 - Sequence China NOI 25p 8.8% 13
NOI '19 P4 - Jump China NOI 25p 13.2% 44
NOI '19 P5 - Landlords China NOI 25p 22.3% 17
NOI '19 P6 - Explore China NOI 25p 2.5% 11
NOI '20 P1 - Delicacy China NOI 25p 13.4% 34
NOI '20 P2 - Destiny China NOI 25p 16.1% 13
NOI '20 P3 - Tears China NOI 40p 11.0% 8
NOI '20 P4 - Dish China NOI 20p 8.2% 23
NOI '20 P5 - Surreal China NOI 17p 11.3% 19
NOI '20 P6 - Road China NOI 45p 3.3% 1
NOI '21 P1 - Light Heavy Edges China NOI 25p 9.3% 28
NOI '21 P2 - Intersecting Paths China NOI 25p 24.2% 18
NOI '21 P3 - Celebration China NOI 25p 10.3% 24
NOI '21 P4 - Quantum Communication China NOI 25p 9.1% 23
NOI '21 P5 - The Locked Box China NOI 25p 12.8% 10
NOI '21 P6 - Robot Game China NOI 25p 22.5% 4
NOI '22 P1 - Major China NOI 25p 5.5% 14
NOI '22 P2 - Stone China NOI 30p 25.0% 3
NOI '22 P3 - Count China NOI 40p 0.0% 0
NOI '22 P4 - Challenge NPC China NOI 25p 30.0% 7
NOI '22 P5 - Bubble Sort China NOI 35p 1.7% 1
NOI '22 P6 - Quadratic Integer Program China NOI 40p 0.0% 0
NOI '23 P1 - Square Coloring China NOI 17p 24.3% 14
NOI '23 P2 - Osmanthus Tree China NOI 25p 20.7% 6
NOI '23 P3 - Depth First Search China NOI 35p 27.3% 2
NOI '23 P4 - Trade China NOI 20p 32.4% 10
NOI '23 P5 - String China NOI 25p 16.7% 9
NOI '23 P6 - Merge the Books China NOI 30p 14.3% 3
NOI '97 P1 - Competition Ranking China NOI 7 32.4% 40
NOI '97 P2 - Optimal Routing China NOI 7p 26.3% 60
NOI '97 P3 - File Matching China NOI 25p 2.7% 2
NOI '97 P4 - Perfect Tour China NOI 5 31.6% 148
NOI '97 P5 - Building Game China NOI 15p 27.4% 25
NOI '97 P6 - Satellite Coverage China NOI 12p 38.4% 28
NOI '98 P1 - Personal Income Tax China NOI 7 55.6% 22
NOI '98 P2 - Free Pizza China NOI 15p 18.8% 13
NOI '98 P3 - Software Installation Disk China NOI 15p 43.8% 3
NOI '98 P4 - Scarf Cutting China NOI 15p 28.8% 10
NOI '98 P5 - SERNET Simulation China NOI 12p 8.5% 14
NOI '98 P6 - Parallel Computing China NOI 25p 0.0% 0
NOI '99 P1 - 01 Sequence China NOI 20p 27.3% 15