# -*- coding: utf-8 -*-



def rev(k):
    cache = [0, 1]
    for w in range(k):
        cache.append(cache[w] + cache[w + 1])
    return cache[k - 1]


def solve(input):
    n = int(input.split(" ")[0])
    m = int(input.split(" ")[1])
    return rev(n) % m

if __name__ == "__main__":
    print solve(raw_input())