import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int s = (n + 1) * 10;
		int b = (n + 2) * 100;
		int q = (n + 3) * 1000;
		int w = (n + 4) * 10000;
		int sum = n + s + b + q + w;
		System.out.println(sum);
	}
}
/**************************************************************
	Problem: 1621
	User: admin
	Language: Java
	Result: Accepted
	Time:662 ms
	Memory:40316 kb
****************************************************************/