33789158 33791469

In first submission,I use implicit conversion:double to string.As a result,It was WA.Output is:

2 6 9,87298334620742 13,3370849613452 12,518734657272 13,3370849613452

Next,I decide to use substitute methods like this:

static string doubleToString(double d)
{
    int s = (int)d;
    string a = Convert.ToInt32((d - s) * 1000000000).ToString().PadLeft(9, '0');
    return $"{s}.{a}";
}

and it was AC.

So obviously,