POJ--1004

#include <iostream>
using namespace std;
float financial[12];
int main(void)
{
int n = 0;
float sum = 0;
while((cin>>financial
) && (++n!=12))
continue;
for (int i=0; i<12; i++)
{
sum += financial[i];
}
cout<<'$'<<sum/12<<endl;
system("pause");
return 0;
}