package yukicoder;

import java.math.BigInteger;
import java.util.Scanner;

public class No526 {
    private int n;
    private BigInteger m;
    private BigInteger[] fibonacci;

    public static void main(String[] args) {
        No526 main = new No526();
        main.run();
    }

    private void run() {
        Scanner sc = new Scanner(System.in);
        n = sc.nextInt();
        m = new BigInteger(sc.next());

        fibonacci = new BigInteger[n + 2];
        fibonacci[1] = new BigInteger("0");
        fibonacci[2] = new BigInteger("1");
        for(int i = 3; i < n + 1; i++) {
            fibonacci[i] = fibonacci[i - 1].add(fibonacci[i - 2]);
        }

        System.out.println(fibonacci[n].mod(m));
    }
}