CodeForces #160A Twins [java]

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

public class Twins_160A {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);

		int n = scan.nextInt();
		List<Integer> a = new ArrayList<>();
		int sum = 0;

		for (int i = 0; i < n; i++) {
			a.add(scan.nextInt());
			sum += a.get(i);
		}

		Collections.sort(a, Collections.reverseOrder());
		int s = 0;
		for (int i = 0; i < a.size(); i++) {
			s += a.get(i);
			if (s > (sum / (double) 2)) {
				System.out.println(i + 1);
				return;
			}
		}
	}
}