const DIVISOR: u128 = 10u128.pow(6) + 7;

fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let n: u128 = n.trim().parse().unwrap();

    let max = (((n / 2) + 1) * ((n / 2) + (n & 1) + 1) - 1) % DIVISOR;

    println!("{max}");
}