fn main() {
    let mut nk = String::new();
    std::io::stdin().read_line(&mut nk).ok();
    let nk: Vec<usize> = nk.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let n = nk[0];
    let k = nk[1];
    let mut a = String::new();
    std::io::stdin().read_line(&mut a).ok();
    let a: Vec<usize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();

    let mut dp = vec![0usize; 1<<n];
    dp[0] = k;
    for i in 0..1<<n {
        for j in 0..n {
            if ((i >> j) & 1) == 1 { continue; }
            let idx = i | (1 << j);
            dp[idx] = dp[idx].max(dp[i] % a[j]);
        }
    }
    println!("{}", dp[(1<<n)-1]);
}