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: Time Limit Exceeded)

#include <stdio.h>

int main()
{
    int a, b, c;
    int i, cnt;
    scanf("%d %d %d", &a, &b, &c);
    
    cnt = 0;
    for (i=a; i=b; i++) {
        if(i/c == 0) cnt++;
    }
    return 0;
}