const MOD: usize = 1e9 as usize + 7;

fn power(base: usize, times: usize) -> usize {
    if times == 0 { return 1usize; }
    if times == 1 { return base; }
    let temp = power(base, times/2);
    temp * temp % MOD * power(base, times%2) % MOD
}

fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let n: usize = n.trim().parse().unwrap();
    
    if n == 1 {
        println!("2");
        return;
    }
    let mut result = if n % 2 == 1 { 3 } else { 1 };
    if n > 1 {
        result *= 4;
    }
    if n > 3 {
        result *= power(5, n / 2 - 1);
    }
    result %= MOD;
    println!("{}", result);
}