using System;
using System.Collections.Generic;
using System.Linq;

class Program {
    static void Main(string[] args) {
        //入力
        int trial = 1000;

        //int[] N = new int[trial];
        //int[] K = new int[trial];
        //for (int i = 0; i < trial; i++) {
        //    string s = Console.ReadLine();
        //    string[] t = s.Split(' ');
        //    N[i] = int.Parse(t[0]);
        //    K[i] = int.Parse(t[1]);
        //}

        Console.WriteLine("500");
    }
}