import java.io.*;

public class Test {
	public static void main(String args[]) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		long N = Long.parseLong(br.readLine());
		
		int antfirst = 316;
		int antsecond = 368;
		
		long antN = antfirst + (antsecond - antfirst)*(N-1);
		
		System.out.println(antN);
	}
}