import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int alreadyProcessed_Percent = scan.nextInt();
		int remainMinute = scan.nextInt();

		double alreadyProcessed_Decimal = alreadyProcessed_Percent / 100.0;
		double remainProcess_Decimal = 1.0 - alreadyProcessed_Decimal;
		double totalMinute_Decimal = remainMinute / remainProcess_Decimal;
		int totalMinute = (int)Math.floor(totalMinute_Decimal);

		System.out.println(totalMinute);
		scan.close();
	}

}