from functools import lru_cache
import sys
sys.setrecursionlimit(1000000)

@lru_cache(maxsize=1024)
def fib(n):
    if n == 1:
        return 0
    elif n == 2:
        return 1
    else:
        return fib(n-1) + fib(n-2)

n, m = map(int, input().split())
print(fib(n) % m)