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

/**************************************************************
	Problem: 1391
	User: huangcanwu
	Language: C++
	Result: Wrong Answer
****************************************************************/