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