N, K = input().split()
N = int(N)
cnt = [0] + list(map(int, input().split()))
K = list(map(int, K))
ans = []
if N > len(K):
    for i in range(1, 10):
        ans.extend([i] * cnt[i])
    print(*ans, sep="")
    exit()
elif N < len(K):
    print(-1)
    exit()

for i in range(N):
    if cnt[K[i]]:
        ans.append(K[i])
        cnt[K[i]] -= 1
    else:
        break

for i in range(len(ans), -1, -1):
    if i == N:
        cnt[ans.pop()] += 1
    else:
        for j in range(K[i] + 1, 10):
            if cnt[j]:
                ans.append(j)
                cnt[j] -= 1
                for k in range(1, 10):
                    ans.extend([k] * cnt[k])
                print(*ans, sep="")
                exit()
        if ans:
            cnt[ans.pop()] += 1
        else:
            print(-1)
            exit()