#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pb push_back
#define fi first
#define se second
#define rep(i,s,n) for(int i = s;i<n;i++)
#define rrep(i,s,n) for(int i = (n)-1;i>=(s);i--)
#define all(v) (v).begin(),(v).end()
#define chmin(a,b) a=min((a),(b))
#define chmax(a,b) a=max((a),(b))
#define endl '\n'
#define IOS() ios_base::sync_with_stdio(0);cin.tie(0)
typedef long long ll;
typedef pair<int,int>pint;
typedef vector<int>vint;
const ll MOD=1000000007,INF=1e18;

int T,N;
int t[100010];
int dp[1ll<<20][20];


signed main() {
    IOS();
    cin>>T>>N;
    rep(i,0,N)cin>>t[i];
    rep(i,1,(1ll<<N))rep(j,0,N)dp[i][j]=INF;
    rep(i,1,(1ll<<N)){
        rep(j,0,N){
            if(i&(1ll<<j)){
                rep(k,0,N+1){
                    chmin(dp[i][k],dp[i^(1ll<<j)][k]+t[j]);
                    if(dp[i][k]<=T){
                        dp[i][k+1]=0;
                    }
                }
            }
        }
    }
    rep(i,1,N+1){
        if(!dp[(1ll<<N)-1][i]){
            cout<<i<<endl;
            return 0;
        }
    }
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    return 0;
}