#include <cassert>
#include <cmath>
#include <algorithm>
#include <iostream>
#include <iomanip>
#include <climits>
#include <map>
#include <queue>
#include <set>
#include <cstring>
#include <vector>

using namespace std;
typedef long long ll;

int main() {
  int T;
  cin >> T;
  int N;
  cin >> N;

  vector<int> times(N);
  for (int i = 0; i < N; ++i) {
    cin >> times[i];
  }

  int L = 1 << N;
  int dp[L][N + 2];
  memset(dp, 0, sizeof(dp));
  for (int mask = 1; mask < L; ++mask) {
    for (int i = 0; i <= N; ++i) {
      dp[mask][i] = T * N + 1;
    }
  }

  for (int mask = 1; mask < L; ++mask) {
    for (int i = 0; i < N; ++i) {
      if (mask >> i & 1) {
        for (int j = 0; j <= N; ++j) {
          int nmask = mask ^ (1 << i);
          dp[mask][j] = min(dp[mask][j], dp[nmask][j] + times[i]);

          if (dp[mask][j] <= T) {
            dp[mask][j + 1] = 0;
          }
        }
      }
    }
  }

  for (int i = 0; i <= N; ++i) {
    if (!dp[L - 1][i]) {
      cout << i << endl;
      break;
    }
  }

  return 0;
}