N = int(input())
if N % 2 == 1:
    A = N//2 + 1
    B = N//2 + 1
    ans = A*B + A - 1
    ans %= 10**6+7
    print(ans)
else:
    A = N//2
    B = N//2 + 1
    ans = A*B + A
    ans %= 10**6+7
    print(ans)