using static System.Console;
using static System.Math;
class main{
static int Main(){
double eps=1.0/32, dx=1.0/16;
for(double x=-4+eps;x<=6;x+=dx)
	WriteLine("{0,10:f3} {1,15:f8}",x,math.gamma(x));
double truegamma=1;
for(double x=1;x<=100;x+=1)
	{
	Error.WriteLine("{0,10:f3} {1:g15} {2:g15}",x,math.gamma(x),truegamma);
	truegamma*=x;
	}
return 0;
}//Main
}//main