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;
    scanf("%d %d %d",&a,&b,&c);
    int i, ans;
    i=a;
    while(i<=b){
        if(c%i==0){
            ans++;
            i++;
        }
    }
    printf("%d/n", ans);
    return 0;
}