#![allow(non_snake_case)]

use std::io::{BufWriter, stdout, Write};


fn main() {
    let mut scan = Scanner::default();
    let out = &mut BufWriter::new(stdout());
    macro_rules! println(($($tt:tt)*) => { writeln!(out, $($tt)*).ok(); });
    macro_rules! print(($($tt:tt)*) => { write!(out, $($tt)*).ok(); });
    macro_rules! input(($t:ty) => { scan.next::<$t>() }; ($t:ty; $n:expr) => { (0..$n).map(|_| input!($t)).collect::<Vec<_>>() });

    let N = input!(usize);
    let M = input!(usize);
    let mut dp = vec![0; N];
    dp[1] = 1;
    for i in 2..N {
        dp[i] = dp[i - 1] + dp[i - 2];
        dp[i] %= M;
    }

    println!("{}", dp[N - 1]);




}


#[derive(Default)]
struct Scanner {
    buffer: Vec<String>
}
impl Scanner {
    fn next<T: std::str::FromStr>(&mut self) -> T {
        loop {
            if let Some(token) = self.buffer.pop() {
                return token.parse().ok().expect("Failed parse");
            }
            let mut input = String::new();
            std::io::stdin().read_line(&mut input).expect("Failed read");
            self.buffer = input.split_whitespace().rev().map(String::from).collect();
        }
    }
}