NUM,MOD = map(int,raw_input().split())
M=[]
def _fib_matrix(n,m):
    global M
    if n > 1:
        _fib_matrix(n/2,m)
        M = [
            [M[0][0]*M[0][0] + M[0][1]*M[1][0],
             M[0][0]*M[0][1] + M[0][1]*M[1][1],
            ],
            [M[1][0]*M[0][0] + M[1][1]*M[1][0],
             M[1][0]*M[0][1] + M[1][1]*M[1][1],
            ],
        ]
        if m:
            M = [map(lambda x:x%m, v) for v in M]
    if n % 2 == 1:
        N= [[1,1], [1,0]]
        M = [
            [M[0][0]*N[0][0] + M[0][1]*N[1][0],
             M[0][0]*N[0][1] + M[0][1]*N[1][1],
            ],
            [M[1][0]*N[0][0] + M[1][1]*N[1][0],
             M[1][0]*N[0][1] + M[1][1]*N[1][1],
            ],
        ]
        if m:
            M = [map(lambda x:x%m, v) for v in M]

def fib_matrix(n, modulo=None):
    global M
    M = [[1,0], [0,1]]
    _fib_matrix(n, modulo)
    return M[0][1]
print(fib_matrix(NUM-1,MOD))