import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int g = n % 10;
		int s = n / 10 % 10;
		int b = n / 100 % 10;
		int q = n / 1000;
		int sum = g * 10 + s + b * 1000 + q * 100;
		System.out.println(sum);
	}
}
/**************************************************************
	Problem: 1619
	User: admin
	Language: Java
	Result: Accepted
	Time:615 ms
	Memory:40200 kb
****************************************************************/