BD1005

#include<iostream>
#include<stdlib.h>
using namespace std;
int main()
{
double x=0,y=0;
int n=0;
int years;
cin>>n; 
for(int i=0;i<n;i++)
{
cin>>x>>y;
years=int(3.14*(x*x+y*y)/(2*50));
cout<<"Property "<<i+1<<": This property will begin eroding in year "<<years+1<<"."<<endl;
}
cout<<"END OF OUTPUT."<<endl;
return 0;
}