r= x^56 + x^55 - x^53 - x^52 + x^50 + x^49 - x^47 - x^46 + x^44 + x^43 - x^41 - x^40 + x^38 + x^37 - x^35 - x^34 + x^32 + x^31 - x^29 - x^28 - x^27 + x^25 + x^24 - x^22 - x^21 + x^19 + x^18 - x^16 - x^15 + x^13 + x^12 - x^10 - x^9 + x^7 + x^6 - x^4 - x^3 + x + 1 q= (x^60 - x^59 + x^58 - x^31 + 4*x^30 - x^29 + x^2 - x + 1)/3 P= 3*q_k29method66 v= x