
import java.util.Arrays;
import java.util.HashSet;
import java.util.Scanner;

/**
 *
 * @author koponk
 */
public class soalA {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String input[] = in.nextLine().split(" ");
        int data[] = new int[3];
        for(int a=0;a<3;a++){
            data[a] = Integer.parseInt(input[a]);
        }
        double hasil = (((double)data[2]*(double)data[0]-100.0*(double)data[1])/100.0);
        System.out.println((int)(Math.ceil(hasil)));
    }
}
