from functools import lru_cache
import sys

sys.setrecursionlimit(5 * 10**6)

N, M = map(int, input().split())


@lru_cache(maxsize=1000)
def fib(n):
    if n < 2:
        return n
    else:
        return fib(n - 1) + fib(n - 2)


print(fib(N-1) % M)