import java.util.*;

public class Exercise119{
  public static void main (String[] args){

    Scanner sc = new Scanner(System.in);

    int ca = sc.nextInt();
    int cb = sc.nextInt();
    int min = 200;
    for(double i = 1; i < 200; i++){
      for(double j = 1; j < 200; j++){
        if(ca == (int)Math.round(i * 100 / (i + j)) && cb == (int)Math.round(j * 100 / (i + j))){
          min = Math.min(min, (int)(i + j));
        }
      }
    }
    System.out.println(min);
  }
}