#include <bits/stdc++.h>
using namespace std;
signed main(){
	int n;cin>>n;
	if(n<100){
		cout<<"00";
		return 0;
	}else if(n>=100&&n<=5000){
		n=n/100;
	}else if(n>5000&&n<=30000){
		n=n/1000+50;
	}else if(n>30000&&n<=70000){
		n=(n/1000-30)/5+80;
	}else{
		n=89;
	}
	if(n<10){
		cout<<"0"<<n<<'\n';
	}else{
		cout<<n<<'\n';
	}
	return 0;
}