#include<iostream>
#include<cmath>
using namespace std;
int main(){
	int n;
	cin>>n;
	if(n<100)n=0;
	else if(n<=5000)floor(n/100);
	else if(n<=30000)n=(floor(n/1000)+50);
	else if(n<=70000)n=((floor(n/1000)-30)/5+80);
	else n=89;
	printf("%.2d",n);
	return 0;
}