N, MOD = map(int, input().split())
 
def mul(A, B):
    r1 = len(A)
    c1 = len(A[0])
    c2 = len(B[0])
    res = [[0]*c2 for _ in range(r1)]
    for i in range(r1):
        for j in range(c2):
            for k in range(c1):
                res[i][j] += A[i][k] * B[k][j]
                res[i][j] %= MOD
    return res

def power(A, x):
    N = len(A)
    if x == 0:
        res = [[0]*N for _ in range(N)]
        for i in range(N):
            res[i][i] = 1
        return res
    
    res = power(A, x//2)
    res = mul(res, res)
    if x % 2 == 1:
        res = mul(res, A)
    return res

F = [[1, 1],
     [1, 0]]

A = [[1],
     [0]]

F = power(F, N-2)
ans = mul(F, A)
print(ans[0][0])