import java.io.*;
import java.util.Arrays;

public class Main01 {
  public static void main(String[] args) {
    try {
      InputStreamReader inputStreamReader = new InputStreamReader(System.in);
      BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

      String strBoxLength = bufferedReader.readLine();
      int boxLength = Integer.parseInt(strBoxLength);
      String strBlockNum = bufferedReader.readLine();
      int blockNum = Integer.parseInt(strBlockNum);
      String strBoxsWidth = bufferedReader.readLine();
      String[] strBoxWidths = strBoxsWidth.split(" ");
      int[] boxWidths = new int[strBoxWidths.length];
      for (int i = 0; i < blockNum; i++) {
        boxWidths[i] = Integer.parseInt(strBoxWidths[i]);
      }
      
      // ソート
      Arrays.sort(boxWidths);
      
      int width = 0; // 幅
      int boxNum = 0; // 箱の個数
      for (int i = 0; i < strBoxWidths.length; i++) {
          if (width + boxWidths[i] > boxLength) {
            boxNum = i;
            break;
          }
          width += boxWidths[i];
      }
      
      // 結果出力
      System.out.println(boxNum);
    } catch (Throwable th) {
      th.printStackTrace();
    }
   }
}