noi1.3.15

1.3.15

import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int n = scan.nextInt();
int x = scan.nextInt();
int y = scan.nextInt();
if(y > n*x) {
}
else {
int a = y / x;
if(y%x == 0) {
System.out.print(n - a);
}
else {
System.out.print(n - a - 1);
}
}