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- a b
- c d
- 3 1 4 1
- 5 9 2 6
- 5 3 5 8
- 9 7 9 3
- (3*9 - 1*5) (4*6 - 1*2) = 22 22
- (5*7 - 3*9) (5*3 - 8*9) 8 -57
- (22*-57 - 22*8) = -1430
- [[1,0],[0,1]] -> 1
- [[1,9],[8,4]] -> -68
- [[0,1,2,3],[4,5,6,7],[8,9,0,1],[2,3,4,5]] -> 40
- [[3,1,4,1],[5,9,2,6],[5,3,5,8],[9,7,9,3]] -> -1430
- [[1,0,0,0,0,0,0,0],[2,1,0,0,0,0,0,0],[3,2,1,0,0,0,0,0],[4,3,2,1,0,0,0,0],[5,4,3,2,1,0,0,0],[6,5,4,3,2,1,0,0],[7,6,5,4,3,2,1,0],[8,7,6,5,4,3,2,1]] -> 1
- [[7,1,0,5,8,0,1,5],[9,9,6,6,1,2,4,8],[4,8,7,3,8,7,4,7],[4,6,1,9,7,0,1,7],[7,6,7,1,9,4,1,6],[8,0,0,8,5,5,9,9],[4,6,4,8,9,4,8,6],[9,0,8,7,6,2,1,5]] -> 2937504
- [[1,2,3,4,5,6,7,8],[2,3,4,5,6,7,8,1],[3,4,5,6,7,8,1,2],[4,5,6,7,8,1,2,3],[5,6,7,8,1,2,3,4],[6,7,8,1,2,3,4,5],[7,8,1,2,3,4,5,6],[8,1,2,3,4,5,6,7]] -> -10549504
- [[1,1,1,0,1,1,1,1,1,1,1,1,1,1,1,0],[0,1,1,1,1,0,0,1,0,1,1,1,1,1,1,0],[1,1,0,1,1,0,1,1,1,1,1,1,1,1,1,0],[0,1,1,1,1,0,0,0,0,1,1,1,1,1,0,1],[1,0,1,0,1,1,1,0,0,1,1,1,1,0,1,0],[0,0,1,1,1,0,1,1,1,1,1,1,1,0,0,0],[1,1,1,1,1,0,1,0,1,1,1,1,1,1,1,1],[1,1,0,1,1,1,1,1,1,1,1,1,0,1,0,1],[1,1,1,1,1,1,1,1,1,1,0,1,1,1,1,1],[0,1,1,1,1,1,1,1,1,0,0,1,0,1,0,1],[1,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1],[1,1,0,1,1,0,1,1,1,1,1,0,0,1,1,0],[1,1,1,1,1,1,1,1,0,1,1,1,1,1,1,0],[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1],[1,0,1,0,0,1,0,1,0,1,1,1,1,1,0,1],[1,1,1,1,1,1,1,1,1,0,0,1,1,1,0,1]] -> -8
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