ABC001-B.cpp

#include "bits/stdc++.h"
using namespace std;
static const int inf = 1<<30;

int VV(int val){
    if(val < 100) return 0;
    if(val <= 5000) return val/100;
    if(val <= 30000) return 50+val/1000;
    if(val <= 70000) return (val-30000)/5000 + 80;
    return 89;
}

int main(void){
    int m;
    cin >> m;
    cout << setw(2) << setfill('0') << VV(m) << endl;
    return 0;
}