import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		Main main = new Main();
		main.solveB();
	}

	private void solveB() {
		Scanner sc = new Scanner(System.in);
		long N = sc.nextLong();
		long M = sc.nextLong();

		long pp = 0;
		long p = 1;
		for (int n = 3; n <= N; n++) {
			long now = (pp + p) % M;
			pp = p;
			p = now;
		}
		System.out.println(p);
	}
}