import java.io.IOException;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) throws IOException {
		Scanner scanner = new Scanner(System.in);
		int n = scanner.nextInt();
		int m = scanner.nextInt();
		System.out.println(calc(n,m));
	}

	static int calc(int n, int m){
		if(n == 2){
			return 1;
		}
		else if (n == 1) {
			return 0;
		}else{
			return (calc(n-1, m) + calc(n-2, m)) % m;
		}
	}
}