typedef double R;
typedef unsigned int ui;
typedef struct {int d; int vc; R * wh; int sc; short * c;} bp;
typedef struct{R* a; int m; int n;} mat; // a[m, n]
typedef bp bg(void); // brane generator
bg g1, g2, g3, gx;
R smp(R *, int, int);
void rdx(ui*, ui*, ui);
void mm(mat, mat, mat);
void pm(mat, char *);
R det(R *, int, int);
typedef void dp(R);