题解 | #KiKi和酸奶#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int h = sc.nextInt();
        int m = sc.nextInt();
        System.out.println(n - (int)Math.ceil(m/(float)h));
    }
}