#include <iostream.h>
#include <math.h>
int main(void)
{
	float a,b,c,r;
	a=0;
	while(1)
	{
		cout<<"please input x y z(9999 to exit)"<<endl;
		cin>>a;
		cin>>b;
		cin>>c;
		if(a==9999.0)
			break;

		r=a*a+b*b+c*c;
		r=(float)sqrt(r);
		a/=r;
		b/=r;
		c/=r;
		cout<<a<<"f,"<<b<<"f,"<<c<<"f"<<endl;
	}
	return 0;
}