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

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