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Problem ▴ Category Points AC % Users
Back From Summer '17 P5: Confusing Codeforces Contest Seasonal 25p 14.0% 29
Back From Summer '17 P6: Crowded Cities Seasonal 20p 11.9% 120
Back From Summer '19 P1: Winnie's Orphans Seasonal 3 43.5% 332
Back From Summer '19 P2: Straying From God's Light Seasonal 7p 17.5% 170
Back From Summer '19 P3: ASDFGHJKL Seasonal 10p 8.6% 60
Back From Summer '19 P4: Wesley And Cake Seasonal 25p 23.1% 8
Back From Summer '19 P5: ABC123E Seasonal 17p 30.1% 32
Back From Summer '19 P6: Composite Zeyu Seasonal 15p 37.6% 41
Back To School '16: Cherry Tree Seasonal 12p 42.0% 315
Back To School '16: Contest Practice Seasonal 20p 41.8% 43
Back To School '16: Dodgeball Seasonal 7p 16.3% 197
Back To School '16: Harambe Seasonal 3p 30.5% 912
Back To School '16: Paradox Seasonal 5 33.7% 286
Back To School '16: Screensaver Seasonal 10 13.2% 97
Back To School '16: Textbooks Seasonal 20p 23.0% 79
Back To School '16: Times Table Seasonal 17p 9.5% 53
Back To School '17: Avalon Seasonal 5p 29.1% 345
Back To School '17: Big Integer Seasonal 35p 5.9% 27
Back To School '17: Hot and Cold Seasonal 20p 19.9% 66
Back To School '17: New English Seasonal 12p 10.3% 81
Back To School '17: Physics Seasonal 7 6.8% 69
Back To School '17: Sour Candy Seasonal 15p 28.5% 81
Back To School '17: Wet Mud Seasonal 10p 19.7% 329
Back To School '17: 🅱aram🅱e Seasonal 3p 41.5% 408
Back To School '18: An FFT Problem Seasonal 10p 25.9% 111
Back To School '18: Beautiful Trees Seasonal 10p 15.2% 102
Back To School '18: Function Maximization Seasonal 25p 13.6% 32
Back To School '18: Harambe Seasonal 3 23.1% 380
Back To School '18: Letter Frequency Seasonal 7p 19.0% 543
Back To School '18: Making Friends Seasonal 7p 18.1% 142
Back To School '18: The Golden Porcupine Seasonal 15p 32.8% 209
Back To School '18: Trucking Troubles II Seasonal 20p 29.7% 31
Back To School '19: A Circular Game Seasonal 10p 7.3% 43
Back To School '19: Beautiful_Times' Fruit Scam Seasonal 35p 19.4% 4
Back To School '19: Chemistry Seasonal 7p 13.2% 96
Back To School '19: FFT Fun Seasonal 20p 14.6% 16
Back To School '19: Heist Night Seasonal 15p 14.4% 31
Back To School '19: H🅰️r🅰️mbe Seasonal 3 34.1% 258
Back To School '19: Parkour Seasonal 5p 12.2% 174
Back To School '19: Unstable Books Seasonal 15p 29.9% 32
Bad Paths Uncategorized 12p 21.4% 48
Balkan OI '11 P1 - Two Circles Balkan OI 30p 11.5% 11
Balkan OI '11 P2 - Decrypt Balkan OI 15p 57.9% 9
Balkan OI '11 P3 - Medians Balkan OI 12p 27.6% 37
Balkan OI '11 P4 - Compare Balkan OI 25p 28.8% 17
Balkan OI '11 P5 - Time Is Money Balkan OI 30p 16.1% 46
Balkan OI '11 P6 - Trapezoids Balkan OI 20p 26.3% 22
Baltic OI '01 P1 - Postman Baltic OI 10p 18.7% 25
Baltic OI '01 P2 - Crack the Code Baltic OI 20p 8.3% 1
Baltic OI '01 P3 - Box of Mirrors Baltic OI 20p 12.5% 7