import sys
sys.setrecursionlimit(10**9)
# import pypyjit
# pypyjit.set_param('max_unroll_recursion=-1')

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

def fib_memo(n):
    memo = [-1] * (n+1)
    def _fib(n):
        if n == 1:
            return 0
        elif n == 2:
            return 1
        elif memo[n] != -1:
            return memo[n]
        else:
            memo[n] = _fib(n-1) + _fib(n-2)
            return memo[n]
    return _fib(n)

print(fib_memo(N) % M)