ssss["x:map(int,x.split())"mT"x:[x[3]-x[i]for i in range(3)]"m]u]u]u][["x:(x[3]*(x[7]*x[2]-x[1]*x[8])+x[6]*(x[1]*x[5]-x[4]*x[2])+x[0]*(x[4]*x[8]-x[7]*x[5]))/6"m]