include stdafx include math include iostream using namespace std float

#include "stdafx.h" 
//#include "math.h" 
#include <iostream> 
using namespace std; 



float f (char* s, int n)
{	
	return (float)(atof(s));

  }

	

void main() 
{  int n;
cin>>n;
	char * s = new char [n];

	for (int i=0;i<n;i++) cin>>s[i];
	 
	cout<<f(s,n);

}