use proconio::input;

fn main(){
    input!{
        n:usize,
        a:[usize;9],
    }
    let mut ans=0;
    for i in (0..9).rev(){
        let c=i+1;
        for _ in (0..a[i]){
            ans*=10;ans+=c;
        }
    }
    print!("{}",ans);
}