java大数

Posted 2021-02-14 Tonyyy

public class Main{
    public static void main(String[] args)
    {
        Scanner input = new Scanner(System.in);
        BigInteger a = input.nextBigInteger();
        int count=0;
        for(BigInteger i=BigInteger.valueOf(1);;i = (i.multiply(BigInteger.valueOf(10)).add(BigInteger.valueOf(1))))
        {
            count++;
            if((i.mod(a)).equals(BigInteger.valueOf(0))) {
                System.out.print(i.divide(a)+" "+count);
                break;
            }
        }
  }
}