nk1002

#include <iostream>
using namespace std;
int n;
int fn(int n);
int main()
{
	cin>>n;
	while (!cin.eof())
	{
		int ret =fn(n);
		cout<<ret<<endl;
		cin>>n;
	}

	return 0;
}

int fn(int n)
{
	int counter = 1;
	while (counter!=0)
	{
		if (n>=50025002)
		{
			n -= 5;
		}	 
		else
		{


			counter+=2;
			n+=2005;



		}
		counter--;
	}
	return n;
}