mod = 10**6 + 7
N = int(input())
if N % 2 == 0:
    k = N // 2
    m = k % mod
    result = (m * (m + 2)) % mod
else:
    k = (N - 1) // 2
    m = k % mod
    result = (m * m + 3 * m + 1) % mod
print(result)