n, m = [int(i) for i in input().strip().split(" ")]

fib_base = [0 % m, 1 % m]
def fib(n):
    if n == 1:
        return fib_base[0]
    elif n == 2:
        return fib_base[1]
    else:
        if len(fib_base) >= n:
            return fib_base[n-1] % m
        else:
            fib_base.append((fib(n-1) % m + fib(n-2) % m) % m)
            return fib_base[-1]
fib(n)
print(fib_base[-1])