Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▴ Users
NOI '14 P5 - Random Number Generator China NOI 12p 24.3% 52
NOI '98 P6 - Parallel Computing China NOI 25p 0.0% 0
NOI '98 P1 - Personal Income Tax China NOI 7 57.5% 20
NOI '00 P4 - Trie China NOI 7 50.3% 120
NOI '99 P2 - Nails and Ball China NOI 15p 20.3% 15
NOI '06 P3 - Millennium Worm China NOI 25p 15.9% 7
NOI '97 P2 - Optimal Routing China NOI 7p 28.5% 59
NOI '01 P5 - Equation Solutions China NOI 15p 8.4% 67
NOI '99 P3 - Birthday Cake China NOI 20p 12.7% 6
NOI '14 P1 - Getting-Up Syndrome China NOI 10p 27.0% 153
NOI '06 P4 - Maximum Profit China NOI 20p 26.3% 79
NOI '01 P3 - The Clever Typist China NOI 15p 31.1% 39
NOI '00 P1 - Ceramic Necklace China NOI 5 32.1% 59
NOI '98 P4 - Scarf Cutting China NOI 15p 24.5% 8
NOI '99 P4 - Chessboard Division China NOI 15p 20.3% 14
NOI '01 P6 - Secret of the Meteorite China NOI 15p 27.4% 26
NOI '00 P5 - Frogs Crossing the River China NOI 10p 29.7% 24
NOI '98 P2 - Free Pizza China NOI 15p 17.7% 12
NOI '97 P1 - Competition Ranking China NOI 7 32.3% 38
NOI '97 P3 - File Matching China NOI 25p 0.0% 0
NOI '13 P4 - Matrix Game China NOI 20p 17.6% 30
NOI '14 P4 - Zoo China NOI 15p 27.8% 77
NOI '14 P2 - Enchanted Forest China NOI 20p 9.3% 59
NOI '00 P6 - Symbol Deciphering China NOI 40p 1.6% 1
NOI '03 P2 - Text Editor China NOI 10p 23.8% 40
NOI '97 P4 - Perfect Tour China NOI 5 32.2% 136
NOI '05 P4 - CongCong and KoKo China NOI 15p 19.7% 57
NOI '97 P5 - Building Game China NOI 15p 27.1% 23
NOI '98 P5 - SERNET Simulation China NOI 12p 8.5% 14
NOI '00 P2 - Program Parser China NOI 12p 11.5% 10
NOI '06 P5 - The Clever Tour Guide China NOI 30p 1.2% 7
NOI '08 P4 - Olympic Logistics China NOI 25p 27.0% 12
NOI '07 P4 - Necklace Factory China NOI 20p 10.1% 25
NOI '08 P6 - Tournament Matching China NOI 40p 17.8% 4
NOI '08 P2 - Course Design China NOI 30p 7.9% 12
NOI '08 P1 - Masquerade Party China NOI 15p 9.1% 23
NOI '07 P3 - Surrounding Battalions China NOI 40p 0.0% 0
NOI '07 P6 - Thief Catching China NOI 40p 23.7% 4
NOI '07 P5 - Counting Spanning Trees China NOI 30p 13.5% 11
NOI '08 P5 - Candy Rain China NOI 30p 14.7% 10
NOI '02 P6 - Robot No. M China NOI 25p 33.3% 17
NOI '08 P3 - Hiring Employees China NOI 25p 46.4% 41
NOI '10 P4 - Flight Control China NOI 20p 21.7% 25
Good Debugging Uncategorized 17 26.4% 129
Good Code Uncategorized 15 12.3% 24
Good Predictions Uncategorized 10 33.0% 73
Good Strategy Uncategorized 10 25.0% 68
Good Travels Uncategorized 17 20.6% 70
NOI '12 P5 - Food Festival China NOI 30p 20.9% 6
NOI '09 P1 - Transformed Sequence China NOI 20p 19.6% 37