import java.util.*;

public class Run {
    public static void main (String arg[]) {
        Scanner scan = new Scanner(System.in);
        int ans = 500;
        int n = 1000;

        double N, K;

        for (int i = 0; i < n; i++) {
            N = scan.nextDouble();
            K = scan.nextDouble();
       }
       System.out.println(ans);
    }
}