N,INTK = map(int, input().split())
INTK+=1
K = str(INTK)
K = K.zfill(N)
A = [0] + list(map(int, input().split())) 
for i in range(int(K[0]),10):
    if A[i]>0:
        break
else:
    print(-1)
    exit()

ANS = []
for i in range(N):
    v = int(K[i])
    for j in range(v,10):
        if A[j]>0:
            ANS.append(j)
            A[j]-=1
            if j!=v:
                for k in range(len(ANS),N):
                    for j in range(10):
                        if A[j]>0:
                            ANS.append(j)
                            A[j]-=1
                print(''.join(map(str, ANS)))
                exit()

            break
    else:
        while len(ANS)>0:
            v = ANS.pop()
            A[v]+=1
            for j in range(ANS[-1]+1,10):
                if A[j]>0:
                    ANS.append(j)
                    A[j]-=1
                    for k in range(len(ANS),N):
                        for j in range(10):
                            if A[j]>0:
                                ANS.append(j)
                                A[j]-=1
                    print(''.join(map(str, ANS)))
                    exit()
        if len(ANS)==0:
            print(-1)
            exit()
print(''.join(map(str, ANS)))