import java.util.*;
public class candy{
	public static void main(String... args){
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		int m = scan.nextInt();
		System.out.println(docandy(n,m,scan));
	}
	public static int docandy(int n,int m,Scanner scan){
		int[] candyBox = new int[n];
		for(int i = 0; i < n; i++){
			candyBox[i] = scan.nextInt();
		}
		Arrays.sort(candyBox);
		int count=0;
		int now=0;
		while(count==m){
			if(candyBox[now]!=0){
				count++;
				candyBox[now]--;
			}
			if(candyBox[now]==0)now++;
		}
		return count;
	}
}