//=================================
// Created on: 2018/09/07 21:49:21
//=================================
#include <bits/stdc++.h>
#define show(x) std::cerr << #x << " = " << x << std::endl
using ll = long long;
int main()
{
    int T, N;
    std::cin >> T >> N;
    std::vector<int> t(N);
    for (int i = 0; i < N; i++) { std::cin >> t[i]; }
    const int mask = 1 << N;
    constexpr int INF = 1 << 30;
    std::vector<int> sum(mask, 0);
    for (int i = 0; i < mask; i++) {
        for (int j = 0; j < N; j++) {
            if (i & (1 << j)) {
                sum[i] = sum[i - (1 << j)] + t[j];
                break;
            }
        }
    }
    std::vector<int> dp(mask, INF);
    dp[0] = 0;
    for (int j = 1; j <= N; j++) {
        std::vector<int> tmp(mask, INF);
        for (int i = 0; i < mask; i++) {
            if (dp[i] > T) { continue; }
            const int comp = mask - i - 1;
            for (int j = comp; j > 0; j = (j - 1) & comp) {
                if (dp[i] > tmp[i + j] or sum[j] > std::min(T, tmp[i + j])) { continue; }
                tmp[i + j] = std::min(tmp[i + j], std::max(dp[i], sum[j]));
            }
        }
        dp = tmp;
        if (dp[mask - 1] <= T) { return std::cout << j << std::endl, 0; }
    }
    return 0;
}