import java.util.Scanner;


public class Main_yukicoder249 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        for (int i = 0; i < 1000; i++) {
        	int n = sc.nextInt();
        	int k = sc.nextInt();
        }

    	System.out.println("500");
    	
        sc.close();
    }
}