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Problem ▾ Category Points AC % Users
CCO Preparation Test 4 P3 - Dynamic MST Mock CCO 25p 22.1% 49
CCO Preparation Test 3 P3 - Arrow Mock CCO 30p 18.1% 58
CCO Preparation Test 3 P2 - Packing Up Mock CCO 25p 14.9% 117
CCO Preparation Test 3 P1 - Primitive Pythagorean Pairs Mock CCO 25p 13.7% 20
CCO Preparation Test 2 P3 - Subsets Mock CCO 20p 16.7% 39
CCO Preparation Test 2 P2 - Forest Area Mock CCO 25p 3.8% 5
CCO Preparation Test 2 P1 - Concatenation Mock CCO 17p 13.1% 32
CCO Preparation Test 1 P3 - K-th Rank Student Mock CCO 17p 34.9% 152
CCO Preparation Test 1 P2 - Escape Maze Mock CCO 20p 12.0% 39
CCO Preparation Test 1 P1 - Double Cross Mock CCO 20p 12.1% 10
CCO '99 P6 - Fast Food CCO 15 34.4% 10
CCO '99 P5 - Sum Of Products CCO 15 4.3% 1
CCO '99 P4 - Maple Roundup CCO 10 21.8% 19
CCO '99 P3 - Manelzuma's Revenge CCO 10 28.6% 2
CCO '99 P2 - Common Words CCO 10 12.3% 315
CCO '99 P1 - You Can't Get There From Here CCO 7 26.5% 16
CCO '98 P6 - Derek's Dilemma CCO 12 46.7% 4
CCO '98 P5 - Text Segmentation CCO 10 23.7% 18
CCO '98 P4 - Scoring Curling CCO 7p 25.0% 8
CCO '98 P3 - Bus Schedule CCO 12 12.5% 2
CCO '98 P2 - Message Deciphering CCO 7 51.9% 20
CCO '98 P1 - Fibonacci Numbers CCO 7 26.2% 158
CCO '97 P6 - Aligning DNA CCO 7 19.1% 11
CCO '97 P5 - Space Aliens CCO 10 46.7% 3
CCO '97 P4 - High Tide CCO 10 11.8% 3
CCO '97 P3 - Porous Stone CCO 10 33.3% 2
CCO '97 P2 - Alien Invasion CCO 10 43.4% 54
CCO '97 P1 - Palindromes CCO 10 11.0% 21
CCO '96 P6 - Hoppers CCO 15 15.5% 29
CCO '96 P5 - All Roads Lead Where? CCO 7 62.6% 271
CCO '96 P4 - Where's Waldorf? CCO 7 47.2% 81
CCO '96 P3 - Quadtrees CCO 15 48.4% 84
CCO '96 P2 - SafeBreaker CCO 10 36.2% 89
CCO '96 P1 - Train Swapping CCO 5 26.9% 212
CCO '23 P6 - Triangle Collection CCO 25p 16.7% 18
CCO '23 P5 - Travelling Trader CCO 30p 7.9% 17
CCO '23 P4 - Flip it and Stick it CCO 17p 6.9% 51
CCO '23 P3 - Line Town CCO 30p 9.9% 22
CCO '23 P2 - Real Mountains CCO 17p 13.8% 68
CCO '23 P1 - Binaria CCO 12p 23.3% 170
CCO '22 P6 - Good Game CCO 35p 19.6% 12
CCO '22 P5 - Phone Plans CCO 20p 12.9% 32
CCO '22 P4 - Bi-ing Lottery Treekets CCO 20p 20.6% 29
CCO '22 P3 - Double Attendance CCO 25p 7.4% 28
CCO '22 P2 - Rainy Markets CCO 17p 18.6% 104
CCO '22 P1 - Alternating Heights CCO 12p 27.6% 138
CCO '21 P6 - Loop Town CCO 50p 4.7% 13
CCO '21 P5 - Bread First Search CCO 20p 23.0% 63
CCO '21 P4 - Travelling Merchant CCO 25p 19.0% 53
CCO '21 P3 - Through Another Maze Darkly CCO 25p 20.5% 49