> #include <iostream.h>
> #include <math.h>
> const double PI=3.1415;
> class point
> {
> 	double X,Y;
> public:
> 	point(double xx,double yy){X=xx;Y=yy;}
> 	double GetX(){return X;}
> 	double GetY(){return Y;}
> };
> double radius(int n)
> {
> 	
> 	if(n==0)
> 	return 0.0;
> 	else
> 		return sqrt(100/PI+radius(n-1)*radius(n-1));
> }
> void main()
> {
> 	int N;
> 	cin>>N;
> 	double *M;
> 		M=new double [N];
> 	for(int  i=1;i<=N;i++)
> 	{   
> 		double x,y,R;
> 		
> 		cin>>x>>y;
> 		point p(x,y);
>         R=sqrt(x*x+y*y);
> 		for(int m=0;;m++)
> 		{
> 		if(R<radius(m+1)&&R>radius(m))
> 		{
> 			M[i]=m+1;
> 			break;}
> 		}
> 	}
> 		for(  i=1;i<=N;i++)
> 			cout<<"property"<<' '<<i<<":"<<' '<<' '<<"This property will begin eroding in year"<<' '<<M[i]<<"."<<endl;
> 		cout<<"END OF OUTPUT."<<endl;
> }
> 
> 
>