vcowflix

//#include<bits/stdc++.h>
#include<iostream>
#include<fstream>
#include<vector>
#include<algorithm>

#define long long long
#define nln '\n'

const long N = 20;

using namespace std;

// GLobal variables: cow, m, n

fstream f1,f2;

inline void openf()
{
    f1.open("vcowflix.inp", ios:: in);
    f2.open("vcowflix.out", ios:: out);
}

inline void closef()
{
    f1.close();
    f2.close();
}

long m, n;
vector<long> cow;

void data()
{
    f1.tie(0)->sync_with_stdio(0);
    f2.tie(0)->sync_with_stdio(0);
    cin.tie(0)->sync_with_stdio(0);
    cin >> m >> n;
    for (long i = 0; i != n; ++i)
    {
        long x;
        cin >> x;
        cow.push_back(x);
    }
}

long mav = 0, sum;
vector<bool> ava;

void carry(long i)
{
    if (i == n)
    {
        if (sum <= m && sum > mav)
            mav = sum;
        return;
    }
    if (ava[i])
    {
        sum += cow[i];
        ava[i] = 0;
        carry(i+1);
        ava[i] = 1;
    }
    sum -= cow[i];
    carry(i+1);
}

void process()
{
    ava.resize(n, 1);
    carry(0);
}

void view()
{
    cout << mav << nln;
}

int main()
{
    openf();
    data();
    process();
    view();
    closef();
    return 0;
}