#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a=0,n;
	cin>>n;
	if(n>=200&&n<=299)
	{
		a=50;
	}else if(n>=300&&n<=499)
	{
		a=100;
	}else if(n>=500)
	{
		a=200;
	}
	cout<<n+a;
	return 0;
}

/**************************************************************
	Problem: 1391
	User: lzc
	Language: C++
	Result: Accepted
	Time:22 ms
	Memory:2072 kb
****************************************************************/