n, m = map(int, input().split())
def fib(n):
  memo = {}
  if n == 1:
    return 0
  elif n == 2:
    return 1
  else:
    if str(n) in memo:
      return memo[str(n)]
    else:
      memo[str(n)] = fib(n-2) + fib(n-1)
      return memo[str(n)]
print(fib(n)%m)