(UVA) 10696 - f91 - Solução

import java.io.*;
import java.util.*;

class Main {
    public static void main(String[] args) throws NumberFormatException, IOException {
        Main processando = new Main();
        processando.processa();

        System.exit(0);
    }
       
    static long gambis(BufferedReader br) throws NumberFormatException, IOException {
        long n;
        long resp = 0;
        while (true) {
            n = br.read();
            if (n >= '0' && n <= '9') {
                break;
            }
        }
        while (true) {
            resp = resp*10 + n-'0';
            n = br.read();
            if (n < '0' || n > '9') {
                break;
            }
        }
        return resp;
    }
   
    void processa() throws NumberFormatException, IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
       
        long valor = gambis(br);
       
        while (valor > 0) {
            long resultado = 0;
            if (valor <= 100) {
                resultado = 91;
            }
            else {
                resultado = valor-10;
            }
            bw.write("f91(" + valor + ") = " + resultado + "\n");
            bw.flush();
            valor = gambis(br);
        }
        bw.close();
     
        return;
    }
}