import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int box = sc.nextInt();
        int num = sc.nextInt();
        int[] width = new int[num];
        int r = 0;
        
        for(int i=0; i<num; i++){
            width[i] = sc.nextInt();
        }
        //Arrays.sort(width);
        int tmp;
        // bubble sort
        for(int i=0;i<num;i++){
            for(int j=0;j<num -i -1;j++){
                if(width[j] > width[j+1]){
                    tmp = width[j];
                    width[j] = width[j + 1];
                    width[j + 1] = tmp;
                }
            }
        }
        tmp = 0;
        for(int n : width){
            tmp += n;
            if(box > tmp){
                r += n;
            } else {
                break;
            }
        }
        System.out.println(r);
    }
}