poj1131

高精度

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import java.io.*;

import java.util.*;

import java.math.*;

public class Main {

    public static void main(String[] args) throws FileNotFoundException

    {

//        Scanner cin = new Scanner(new FileInputStream("t.txt"));

        Scanner cin = new Scanner(System.in);

        while (cin.hasNext())

        {

            String st = cin.next();

            BigDecimal a = new BigDecimal("0");

            BigDecimal b = new BigDecimal("1");

            for (int i = 2; i < st.length(); i++)

            {

                b = b.multiply(BigDecimal.valueOf(8));

                a = a.add(BigDecimal.valueOf(st.charAt(i) - '0').divide(b));

            }

            System.out.println(st + " [8] = " + a + " [10]");

        }

    }

}