#include <bits/stdc++.h>
using namespace std;
#define LL long long
const int N = 1e5 + 10;
const int INF = 0x3f3f3f3f;
string a , b , c;
bool flag;
int main()
{
	cin >> a >> b >> c;
	for ( int i = 0 ; i < b.size() ; i++ )
	{
		if ( b[i] == '.' ) 
		{
			flag = 1;
		}
	}
	if ( flag ) 
	{
		cout << b;
	}
	else 
	{
		cout << b << ".0";
	}
	return 0;
}
//菜鸟驿站
//老六专属