Problem:
Score : 100 points

Problem Statement

A biscuit making machine produces B biscuits at the following moments: A seconds, 2A seconds, 3A seconds and each subsequent multiple of A seconds after activation.

Find the total number of biscuits produced within T + 0.5 seconds after activation.

Constraints

All values in input are integers.

1 \leq A, B, T \leq 20

Input

Input is given from Standard Input in the following format:

A B T

Output

Print the total number of biscuits produced within T + 0.5 seconds after activation.

Sample Input 1

3 5 7

Sample Output 1

10

Five biscuits will be produced three seconds after activation.

Another five biscuits will be produced six seconds after activation.

Thus, a total of ten biscuits will be produced within 7.5 seconds after activation.

Sample Input 2

3 2 9

Sample Output 2

6

Sample Input 3

20 20 19

Sample Output 3

0

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int a = sc.nextInt();//3
        int box = a;
        int b = sc.nextInt();//2
        int t = sc.nextInt();//9
        int count = 1;
        t += 1;//t=10
        //int count = 0;
        ArrayList<Integer> time = new ArrayList<>();
        while(count <= 20){//3<10T,6<10T,9<10T
            time.add(a);//time=3,6,9
            a *= count;
            count++;
        }//time=3,6
        int countTime = 0;
        for(int x : time){
            if(x > t){
                break;
            }
            countTime++;
        }
        a = box;
        if(a < t){
            System.out.println(countTime * b);
        }else{
            System.out.println(0);
        }
    }
}