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


public class Main {

	public static void main(String[] args) throws IOException {
		
		BufferedReader cin = new BufferedReader(new InputStreamReader(System.in));
		String line =cin.readLine();
		StringTokenizer st = new StringTokenizer(line);
		int n=0, x=0, y=0 , out=0;
		while(st.hasMoreTokens()) {
		    n = Integer.parseInt(st.nextToken());
		    x = Integer.parseInt(st.nextToken());
		    y = Integer.parseInt(st.nextToken());
		}
		
		out = worldOfWizards(n,x,y);
		System.out.println(out);
	}
	
	
	public static int worldOfWizards(int NoOfPeople,int NoOfWizards,int percentageOfPeopleRequired){
		int requiredClones = 0;
		int math = ((NoOfPeople * percentageOfPeopleRequired) - (100 * NoOfWizards));
		int quotient = math/100;
		int modRemainder = math % 100;
		if (quotient < 0)
			return 0;
		if (modRemainder != 0)
			requiredClones = quotient + 1;
		else 
			requiredClones = quotient;
		return requiredClones;
	}

}

 		 					 		    	   	  		 					