def main():
    n, m = [int(i) for i in input().split()]

    f_1 = 0
    f_2 = 1
    mod = [f_1 % m, f_2 % m]

    for i in range(2, n):
        f_n = mod[0] + mod[1]
        mod_n = f_n % m
        mod.append(mod_n)
        mod.remove(mod[0])

    ans = mod[1]

    print(ans)

if __name__ == "__main__":
    main()