Problem:
How Many Divisors?

Write a program which reads three integers a, b and c, and prints the number of divisors of c between a and b.

Input

Three integers a, b and c are given in a line separated by a single space.

Output

Print the number of divisors in a line.

Constraints

1 ≤ a, b, c ≤ 10000

a ≤ b

Sample Input 1

5 14 80

Sample Output 1

3

Solution in C# (judge verdict: Wrong Answer)

using System;

namespace AOJ
{
    class Program
    {
        static void Main(string[] args)
        {

            {
                var read = Console.ReadLine();
                var temp_string = read.Split(' ');
                int a = int.Parse(temp_string[0]), b = int.Parse(temp_string[1]),c=int.Parse(temp_string[2]),ans=0;

                for (int i = a; i <= b;i++ )
                {
                    if(i%c==0)
                    {
                        ans++;
                    }
                }

                Console.WriteLine(ans);
            }
        }
    }
}