poj 1005 I Think I Need a Houseboat

 1 #include <iostream>
 2 using namespace std;
 3 const double pi = 3.1415926535;
 4 
 5 int main()
 6 {
 7     int t,time = 0;;
 8     double x,y;
 9     cin >> t;
10     while(t--)
11     {
12         ++time;
13         cin >> x >> y;
14         double area = pi*(x*x + y*y);
15         int res = (int)(area/100.0) + 1;
16         cout<<"Property "<<time<<": This property will begin eroding in year "<<res<<‘.‘<<endl;
17     }
18     cout<<"END OF OUTPUT."<<endl;
19     return 0;
20 }