use std::cmp;

fn main() {
    let (n, k): (usize, usize) = {
        let mut buf = String::new();
        std::io::stdin().read_line(&mut buf).unwrap();
        let mut iter = buf.split_whitespace();
        (
            iter.next().unwrap().parse().unwrap(),
            iter.next().unwrap().parse().unwrap(),
        )
    };

    let a: Vec<usize> = {
        let mut buf = String::new();
        std::io::stdin().read_line(&mut buf).unwrap();
        let iter = buf.split_whitespace();
        iter.map(|x| x.parse().unwrap()).collect()
    };

    let mut dp = vec![0; 1 << n];
    dp[0] = k;
    for _ in 0..n {
        for s in (0..(1 << n)).rev() {
            for i in 0..n {
                if ((1 << i) & s) != 0 { continue; }
                dp[(1 << i) | s] = {
                    cmp::max(
                        dp[(1 << i) | s],
                        dp[s] % a[i],
                    )
                };
            }
        }
    }
    
    let ans = dp[(1 << n) - 1];
    println!("{}", ans);
}