import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int up=200;
        int min = Integer.MAX_VALUE;
        for(int i=0; i<up; i++){
            for(int j=0; j<up; j++){
                int x = (int)Math.round(i/(double)(i+j)*100);
                int y = (int)Math.round(j/(double)(i+j)*100);
                if(x==A && y==B){
                    min=Math.min(min,i+j);
                }
            }
        }
        System.out.println(min);
        
    }
}