import java.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		double n = scan.nextDouble(), x = scan.nextDouble(), y = scan.nextDouble();
		int aftern = (int)n, afterx = (int)x, aftery=(int)y, required = 0, answer = 0;
		if(((y/100)*n)%1!=0){
			required = ((int)((y/100)*n))+1;
			answer = (int) (required- (n-(n-x)));
			System.out.println(answer);
		}else {
			required = ((int)((y/100)*n));
			answer = (int) (required- (n-(n-x)));
			System.out.println(answer);
		}
	}
}