北大ACM(POJ1005-I Think I Need a Houseboat)

Question：http://poj.org/problem?id=1005
问题点:计算半圆面积及向上取整。

 Memory: 256K        Time: 0MS
 Language: C++        Result: Accepted

 #include <iostream>

 using namespace std;
 #define pi 3.1415926
 #define Num 200

 int main()
 {
     int N;
     double pos[Num][];
     cin>>N;
     for(int i=;i<N;i++)
     {
         cin>>pos[i][]>>pos[i][];
     }
     for(int i=;i<N;i++)
     {
         cout<<"Property "<<i+<<": This property will begin eroding in year "<<(int)(pi*(pos[i][]*pos[i][]+pos[i][]*pos[i][])/)+<<"."<<endl;
     }
     cout<<"END OF OUTPUT."<<endl;
     return ;
 }