> #include<iostream>
> using namespace std;
> const float PI = 3.1415926;
> int main()
> {
> 	float x;float y;
> 	int n; cin>>n;int m = 1;
> 	while(m++ <= n)
> 	{
> 		cin>>x>>y;int i;
> 		for( i = 1; x*x+y*y > 100*i/PI; i++);
> 		cout<<"Property "<<m-1<<": This property will begin eroding in year "<<i<<"."<<endl;
> 	} cout<<"END OF OUTPUT."<<endl;
> }