//
//
//  Codeforces: ganariya
//  AtCoder: ganariya2525
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//include
//------------------------------------------
#include <vector>
#include <list>
#include <map>
#include <unordered_map>
#include <climits>
#include <set>
#include <unordered_set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <queue>
#include <random>
#include <complex>
#include <regex>
#include <locale>
#include <random>
#include <type_traits>

using namespace std;

#define SHOW_VECTOR(v) {std::cerr << #v << "\t:";for(const auto& xxx : v){std::cerr << xxx << " ";}std::cerr << "\n";}
#define SHOW_MAP(v){std::cerr << #v << endl; for(const auto& xxx: v){std::cerr << xxx.first << " " << xxx.second << "\n";}}

using LL = long long;

//~~~~~~~~~~~~~~~~~~~~~_(＾～＾ ｣ ∠)_~~~~~~~~~~~~~~~~~~~~~


int main() {

    int N, M;
    cin >> N >> M;

    map<int, int> use;
    use[1] = 2;
    use[2] = 5;
    use[3] = 5;
    use[4] = 4;
    use[5] = 5;
    use[6] = 6;
    use[7] = 3;
    use[8] = 7;
    use[9] = 6;

    vector<int> A(M);
    for (int i = 0; i < M; i++) cin >> A[i];

    vector<int> dp(N + 20, -1);
    dp[0] = 0;
    for (int i = 0; i <= N; i++) {
        if (dp[i] == -1) continue;
        for (int j = 0; j < M; j++) {
            int to = i + use[A[j]];
            dp[to] = max(dp[to], dp[i] + 1);
        }
    }

    string ans = "";
    int x = N;
    while (dp[x] != 0) {
        int maxV = -1;
        for (int i = 0; i < M; i++) {
            if (x - use[A[i]] < 0) continue;
            if (dp[x] - dp[x - use[A[i]]] == 1) {
                maxV = max(A[i], maxV);
            }
        }
        ans += (char) ('0' + maxV);
        x -= use[maxV];
    }

    cout << ans;

    return 0;
}
















































Measured memory_bytes: 256