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: Accepted)

using System;

class Program {
    private static int Main() {
        var input = Console.ReadLine();
        var values = input.Split( ' ' );

        int a = int.Parse( values[ 0 ] );
        int b = int.Parse( values[ 1 ] );
        int c = int.Parse( values[ 2 ] );

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

        var output = string.Format( "{0}", cnt );
        Console.WriteLine( output );

        return 0;
    }
}