#include <bits/stdc++.h>

using namespace std;
const int N = 20010;

int n, m;
int v[N];
int f[N];

int main() {
    cin >> m >> n;
    for (int i = 1; i <= n; i++) cin >> v[i];

    // 01背包模板
    for (int i = 1; i <= n; i++)
        for (int j = m; j >= v[i]; j--)
            f[j] = max(f[j], f[j - v[i]] + v[i]);

    // 输出
    printf("%d", m - f[m]);
    return 0;
}