n,mod=map(int,input().split())
n-=1
x=[[0,1],[1,1]]
y=[0,1]
while n:
	if n&1:
		z=[0,0]
		for i in range(2):
			z[i]+=x[i][0]*y[0]+x[i][1]*y[1]
			z[i]%=mod
		y=z
	n>>=1
	z=[[0,0],[0,0]]
	for i in range(2):
		for j in range(2):
			for l in range(2):
				z[i][j]+=x[l][i]*x[j][l]
				z[i][j]%=mod
	x=z
print(y[0])