package main

import "fmt"

func main() {
	var N, M int
	fmt.Scan(&N, &M)
	a, b, c := 1, 0, 0
	for i := 0; i < N-2; i++ {
		c = (a + b) % M
		b = a
		a = c
	}
	fmt.Println(a)
}