import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.StringTokenizer;


public class Wiz {

	public static int t = 0;
	public static BufferedReader in;
	public static StringTokenizer st;
	
	public static String nextToken() throws IOException {
		while (st == null || !st.hasMoreTokens())
			st = new StringTokenizer(in.readLine());
		return st.nextToken();
	}
	
	public static int nextInt() throws IOException {
		return Integer.parseInt(nextToken());
	}
	
	public static double nextDouble() throws IOException{
		
		return Double.parseDouble(nextToken());
	}
	
	public static void main(String[] args) throws Exception {
		in = new BufferedReader(new InputStreamReader(System.in));
		PrintWriter out  =new PrintWriter(new OutputStreamWriter(System.out));
		int n = nextInt();
		int x  = nextInt();
		int y = nextInt();	
		int wiz = (int)(n*0.01*y);
		int ans = 0;
		
		if(wiz <= x)
			out.println((int)ans);
		else{
			out.println((int)(wiz-x));
		}
		out.flush();
}
}
