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


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