#![allow(unused_mut)]

use std::io::{self, BufWriter, Write};
use std::error::Error;

macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let mut s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};

    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };

    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };

    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };

    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };

    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}

fn main() -> Result<(), Box<dyn Error>> {
    let sout = io::stdout();
    let mut o = BufWriter::new(sout.lock());
  
    input! {
        // input
        n : usize,
        a : [i32; n],
    }

    let mut m = 1000;
    let mut s = 0;

    // operate
    for i in 0 .. n {
        let now = a[i];
        let next = a.get(i + 1);
        match next {
            Some(x) => if x < &now {
                m += s * now;
                s = 0;
            } else if x > &now {
                let k = m / now;
                s += k;
                m -= k * now;
            } else {

            },
            None => {
                m += s * now;
                s = 0
            },
        };
    };

    let line = format!("{}\n", m);
    o.write(line.as_bytes())?;
    Ok(())
  }
