//↓見なくていいよ！ここから--------------------------------------------------
var read = require('readline').createInterface({
  input: process.stdin,
  output: process.stdout
});
var obj;
var inLine = [];
read.on('line', function(input){inLine.push(input);});
read.on('close', function(){
  obj = init(inLine);
  console.error("\n");
  var start = Date.now();
  Main();
  var end = Date.now() - start;
  myerr("time : " + (end) + "ms");
  myerr("memory : " + Math.round(process.memoryUsage().heapTotal / 1024) + "KB");
});
function makeClone(obj){return JSON.parse(JSON.stringify(obj));}
function nextInt(){return myconv(next(),1);} function nextStrArray(){return myconv(next(),2);}
function nextIntArray(){return myconv(next(),4);} function nextCharArray(){return myconv(next(),6);}
function next(){return obj.next();} function hasNext(){return obj.hasNext();}
function init(input){  
  var returnObj = {
    list : input, index : 0, max : input.length,
    hasNext : function(){return (this.index < this.max);},
    next : function(){if(!this.hasNext()){throw "ArrayIndexOutOfBoundsException これ以上ないよ";}else{var returnInput = this.list[this.index];this.index++;return returnInput;}}
  };
  return returnObj;
}
function myout(s){console.log(s);}
function myerr(s){console.error("debug:" + require("util").inspect(s,false,null));}
//[no]要素の扱い。数値型
//不明値、異常時:引数そのまま返す 1:数値へ変換
//2:半角SPで分割 4:半角SPで分割し、数値配列へ
//6:1文字で分割  7:1文字で分割し、数値配列へ
//8:半角SPで結合 9:改行で結合 0:文字なしで結合
function myconv(i,no){try{switch(no){case 1:return parseInt(i);case 2:return i.split(" ");case 4:return i.split(" ").map(Number);case 6:return i.split("");case 7:return i.split("").map(Number);case 8:return i.join(" ");case 9:return i.join("\n");case 0:return i.join("");default:return i;}}catch(e){return i;}}

//↑見なくていいよ！ここまで--------------------------------------------------
function Main(){
	var N = nextInt();
	var list = nextIntArray();
	var act = new Array(N);
	if(list[N - 2] < list[N - 1]){
		act[N - 1] = "sell";
	}
	var money = 1000;
	var kabu = 0;
	for(var i = 0; i < N - 1; i++){
		if(act[i] == null){
			for(var j = i + 1; j < N; j++){
				if(list[i] < list[j]){
					act[i] = "buy";
					act[j] = "sell";
					break;
				}else if(list[i] > list[j]){
					act[j] = "buy";
					break;
				}
			}
		}
	}
	myerr(act);
	if(act.indexOf("sell") == -1){
		myout(money);
		return;
	}
	//底と、高いところの間で売買する。
	for(var i = 0; i < N; i++){
		switch(act[i]){
			case "buy":
				var count = Math.floor(money / list[i]);
				money -= list[i] * count;
				kabu = count;
				break;
			case "sell":
				money += kabu * list[i];
				kabu = 0;
				break;
			default:
				break;
		}
	}
	myout(money);
}
