//2?????¢?´¢????????£????§£????????????????????????????????§??????
#include<cstdio>
#include<iostream>

using namespace std;

int gcd(int m, int n)
{
	if ((0 == m) || (0 == n))
		return 1;
	while (m != n)
	{
		if (m > n) m = m - n;
		else         n = n - m;
	}
	return m;
}




int main(void) {

	while (1) {

		int floor, n, book[1000] = { 0 };
		cin >> floor >> n;

		if (floor == 0)return 0;

		for (int i = 0; i < n; i++) {
			cin >> book[i];
		}

		//?????§??¬?´???°????±???????
		int m = book[0];
		int w_avr = book[0];
		for (int i = 1; i < n; i++) {
			m = gcd(m, book[i]);
			w_avr += book[i];
		}
		//?????????????????§?????¬??????????????????????????°??§?????£?????°??????????????¬????????§?????????
		int ans = w_avr / floor;

		for (int i = 0; i < n; i++) {
			if (ans < book[i]) {
				ans = book[i];
			}
		}
		while (ans%m != 0) {
			ans=ans-1;
		}
		while (1) {
			int count = floor;
			int length = ans;
			int i = 0;
			while (count != 0 && i < n) {
				if (length >= book[i]) {
					length -= book[i];
					i++;
				}
				else {
					length = ans;
					count = count - 1;
				}
			}
			if (count != 0) {
				break;
			}
			ans += m;
		}
		cout << ans << endl;

	}
}