import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Scanner;
import java.util.Set;

public class Main {
	
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		final int TRY = 1000;
		
		for(int i = 0; i < TRY; i++){
			final int N = sc.nextInt();
			final int K = sc.nextInt();
		
		}
		
		System.out.println(500);
	}
	
}