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

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] first = br.readLine().split(" ", 2);
        int n = Integer.parseInt(first[0]);
        int m = Integer.parseInt(first[1]);
        long prepre = 0;
        long pre = 1;
        for (int i = 3; i <= n; i++) {
            long now = (pre + prepre) % m;
            prepre = pre;
            pre = now;
        }
        System.out.println(pre);
    }
}