func (gp *GFPoly) GetCoefficient(degree int) int {
	return gp.Coefficients[gp.Degree()-degree]
}
GetCoefficient returns the coefficient of x ^ degree
package utils
type GFPoly struct {
	gf           *GaloisField
	Coefficients []int
}
func (gp *GFPoly) Degree() int {
	return len(gp.Coefficients) - 1
}
func (gp *GFPoly) Zero() bool {
	return gp.Coefficients[0] == 0
}