import sys
def input(): return sys.stdin.readline().strip()
def mapint(): return map(int, input().split())
sys.setrecursionlimit(10**9)

N, M = mapint()
# 行列累乗
memo = [0]*60
memo[0] = [[1, 1], [1, 0]]

def dot(mat1, mat2):
    ret = [[0]*2 for _ in range(2)]
    ret[0][0] = (mat1[0][0]*mat2[0][0] + mat1[0][1]*mat2[1][0])%M
    ret[0][1] = (mat1[0][0]*mat2[0][1] + mat1[0][1]*mat2[1][1])%M
    ret[1][0] = (mat1[1][0]*mat2[0][0] + mat1[1][1]*mat2[1][0])%M
    ret[1][1] = (mat1[1][0]*mat2[0][1] + mat1[1][1]*mat2[1][1])%M
    return ret
    

for i in range(1, 60):
    memo[i] = dot(memo[i-1], memo[i-1])

base = [[1, 0], [0, 1]]
for i in range(60):
    if ((N-1)>>i)&1:
        base = dot(memo[i], base)
print(base[1][0])