botanics

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Numerics;

namespace Q10290
{
    class Program
    {
        static private BigInteger n; static private bool ntof; static private BigInteger sum; static private int count;
        static void Main(string[] args)
        {
            for (; ; )
            {
            labeln: Console.Write("n>>>");
                ntof = BigInteger.TryParse(Console.ReadLine(), out n);
                if (!ntof) goto labeln;
                sum = 0; count = 0;
                for (BigInteger i = 1; i <= n; i++)
                {
                    sum = 0;
                    for (BigInteger j = i; j <= n; j++)
                    {
                        sum += j;
                        if (sum == n) count++;
                        else if (sum > n) break;
                    }
                }
                Console.WriteLine("Ans={0}", count);
            }
        }
    }
}