import java.util.Scanner;

public class Main {
	
	
	public static void main(String[] args){
		Scanner s = new Scanner(System.in);
		
		String[] str = s.nextLine().split(" ");
		int n = Integer.parseInt(str[0]);
		int m =Integer.parseInt(str[1]);
		int fib1;
		if(n == 0){
			fib1=0;
		}
		else if(n == 1){
			fib1= 1;
		}
		else{
		int n_1 = 1;
		int n_2 = 1;
		int ans = 0;
		
		for(int i = 3;i<n;i++){
			ans = n_1 + n_2;
			n_2 = n_1;
			n_1 = ans;
		}
		fib1= ans;
		}
		long ans = fib1 % m;
		System.out.println(ans);
		s.close();
	}

}