POJ 1005

#include<iostream>using namespace std;const double pi = 3.141592653;int main(){    int num;    cin>> num;    double x,y;    for (int i = 0; i<num; i++)    {        cin>>x>>y;        double are = pi*(x*x+y*y);        int year = (int)(are/100+1);        cout<<"Property "<<i+1<<": This property will begin eroding in year "<<year<<'.'<<endl;    } cout<<"END OF OUTPUT."<<endl;    return 0;   }