#include<bits/stdc++.h>
#define int long long
using namespace std;
int n;
main(void) {
	cin>>n;
	if(n<100)
		cout<<"00";
	else if(n<1000)
		cout<<0<<n/100;
	else if(n<=5000)
		cout<<n/100;
	else if(n<=30000)
		cout<<n/1000+50;
	else if(n<=70000)
		cout<<(n/1000-30)/5+80;
	else
		cout<<89;
	return 0;
}