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(void) {
	int a,b,c;
	int count = 0;

	scanf("%d%d%d",&a,&b,&c);
	if (b > c/2) {
		b = c/2;
	}
	while (a != b) {
		if (c%a++ == 0) {
			++count;
		}
	}
	printf("%d\n",count);
	return 0;
}