var input = require("fs").readFileSync("/dev/stdin", "utf8").trim().split("\n"); var obj = { "list" : input, "index" : 0, "max" : input.length, "hasNext" : function(){return (this.index < this.max);}, "next" : function(){ if(!this.hasNext()){throw "NoSuchElementException:次に要素は無いよ";} var returnObj = this.list[this.index]; this.index++; return returnObj; } } Main(); function next(){return obj.next();} function nextInt(){return myconv(next(),1);} function nextStrArray(){return myconv(next(),2);}//半角スペース分割 function nextIntArray(){return myconv(next(),4);}//半角スペース + 数値化 function nextCharArray(){return myconv(next(),6);}//1文字分割 function hasNext(){return obj.hasNext();} function myout(t){console.log(t);}//標準出力 function myerr(t){console.error(t);}//標準エラー出力 //[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((a)=>Number(a));case 6:return i.split("");case 7:return i.split("").map((a)=>Number(a));case 8:return i.join(" ");case 9:return i.join("\n");case 0:return i.join("");default:return i;}}catch(e){return i;}} function Main(){ var L = nextInt(); var N = nextInt(); var list = nextIntArray(); list.sort(function(a,b){ return a - b; }); for(var i = 0; i < N; i++){ L -= list[i]; if(L < 0){ myout(i); return; }else if(L == 0){ myout(i + 1); return; } } myout(N); }