import java.util.Scanner;

public class WizardsAndDemonstration {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        double people = scan.nextInt();
        double wizard = scan.nextInt();
        double p = scan.nextInt();
        p /= 100;
        people *= p;

        if (people == (int) people) {
            wizard = people - wizard;
            System.out.println((int) wizard);
        } else {
            wizard = (people - wizard) + 1;
            System.out.println((int) wizard);
        }
    }

}