Gromah and LZR have entered the sixth level. There are nn_{}n pairwise distinct points on the wall, each can be described asPiP_i ;Pi in a 2-dimensional rectangular coordinate system. LZR finds a note board saying that four distinct pointsA,B,C,DA,B,C,D{}A,B,C,D form a flower if there exists a point among the four points strictly inside the triangle formed by the other three points, where the triangle should be non-degenerate. So the password of this level is naturally the number of tuples(1≤i
Gromah and LZR have entered the sixth level. There are nn_{}n pairwise distinct points on the wall, each can be described as Pi(xi,yi) (1≤i≤n)P_i(x_i, y_i) ;(1le ile n)Pi(xi,yi)(1≤i≤n) in a 2-dimensional rectangular coordinate system. LZR finds a note board saying that four distinct points A,B,C,DA,B,C,D{}A,B,C,D form a flower if there exists a point among the four points strictly inside the triangle formed by the other three points, where the triangle should be non-degenerate. So the password of this level is naturally the number of tuples (i,j,k,l)(1≤i
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