solve h=x-(63790420)/2-7454 , [2*(h-1)*(h-1+1)] < (390644893234047643-3)/8-(63790420)/2*(4*x+1-2*(y-1)) <= [2*h*(h+1)] , 2*(x)*(x+1)-y*(y-1)/2=(390644893234047643-3)/8 ,h ,y