import java.io.*;
import java.util.*;


public class Main_yukicoder526 {

	private static Scanner sc;
	private static Printer pr;

	private static void solve() {
		int n = sc.nextInt();
		int m = sc.nextInt();

		int[] f = new int[n];
		f[0] = 0;
		f[1] = 1;

		for (int i = 2; i < n; i++) {
			f[i] = (int)(((long)f[i - 1] + f[i - 2]) % m);
		}

		pr.println(f[n - 1]);
	}

	// ---------------------------------------------------
	public static void main(String[] args) {
		sc = new Scanner(System.in);
		pr = new Printer(System.out);

		solve();

		pr.close();
		sc.close();
	}

	private static class Printer extends PrintWriter {
		Printer(PrintStream out) {
			super(out);
		}
	}
}