UVA 10696 - f91

#include<bits/stdc++.h>
using namespace std;
int main()
{
    ios_base::sync_with_stdio(0);
    long long num;
    while(cin>>num){
        if(num==0)break;
        if(num>=101) cout<<"f91("<<num<<") = "<<num-10<<"\n";
        else cout<<"f91("<<num<<") = "<<91<<"\n";
    }
    return 0;
}