N = int(input())



def fib(n):
    a, b = 0, 1
    for i in range(n):
        a, b = b, a + b
    return b

L = [(fib(i)**2)%1000000007 for i in range(N)]
A = []
#print(L)
for j in range(len(L)) :
    a = L[j]%1000000007
    A.append(a)
sum(A)