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 Rust (1.15.1) (judge verdict: Accepted)


fn main() {
    let mut line = String::new();
    std::io::stdin().read_line(&mut line).unwrap();
    let mut words = line.split_whitespace();
    let a = words.next().unwrap().parse::<i64>().unwrap();
    let b = words.next().unwrap().parse::<i64>().unwrap();
    let t = words.next().unwrap().parse::<i64>().unwrap();
    let n = ((t as f64 + 0.5) / a as f64).floor() as i64;
    println!("{}", n * b);
}