mod = 10**9 + 7

def multiply(a, b):
    return [
        [(a[0][0] * b[0][0] + a[0][1] * b[1][0]) % mod,
         (a[0][0] * b[0][1] + a[0][1] * b[1][1]) % mod],
        [(a[1][0] * b[0][0] + a[1][1] * b[1][0]) % mod,
         (a[1][0] * b[0][1] + a[1][1] * b[1][1]) % mod]
    ]

def matrix_power(matrix, power):
    result = [[1, 0], [0, 1]]  # Identity matrix
    while power > 0:
        if power % 2 == 1:
            result = multiply(result, matrix)
        matrix = multiply(matrix, matrix)
        power //= 2
    return result

def fib(n):
    if n == 0:
        return 0
    elif n == 1:
        return 1
    m = [[1, 1], [1, 0]]
    res = matrix_power(m, n - 1)
    return res[0][0]

n = int(input())
if n % 2 == 0:
    k = n // 2
    print(fib(k + 1) % mod)
else:
    k = (n - 1) // 2
    print(fib(k + 1) % mod)