#include <iostream>
#include <vector>
using namespace std;
int main() {
    int H, N;
    cin >> H >> N;
    vector<int> dp(H + 1, 0);
    for (int i = 0; i < N; ++i) {
        int s;
        cin >> s;
        for (int j = H; j >= s; --j) {
            if (dp[j - s] + s > dp[j]) {
                dp[j] = dp[j - s] + s;
            }
        }
    }
    cout << dp[H];
    return 0;
}