def main():
    N = int(input())
    C = list(map(int,input().split()))
    A = []
    for i in range(9):
        for j in range(C[i]):
            A.append(str(i+1))

    A.sort(reverse=True)
    ans = A[:N]
    ans = "".join(ans)
    print(ans)

if __name__ == '__main__':
    main()