import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Test2{
	public static void main(String[] args) {
		try{
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			long num = Long.parseLong(br.readLine());
			System.out.println(num + "0");
		}catch(IOException e){
			e.getStackTrace();
		}catch(NumberFormatException e){
			e.getStackTrace();
		}
	}
}