N,K=map(int,input().split())
C=list(map(int,input().split()))

ANS=""
for i in range(9):
    ANS+=str(i+1)*C[i]

if int(ANS)>K:
    print(ANS)
    exit()

if int(ANS[::-1])<=K:
    print(-1)
    exit()

S=str(K)
ANS=[-1]*len(S)

for i in range(len(S)):
    x=int(S[i])

    if C[x-1]>0 and i!=len(S)-1:
        ANS[i]=x
        C[x-1]-=1

    else:        
        for j in range(x,9):
            if C[j]>0:
                C[j]-=1
                ANS[i]=j+1
                break
            
        else:
            for j in range(i-1,-1,-1):
                C[ANS[j]-1]+=1
                ANS[j]=-1

                x=int(S[j])
                flag=0

                for k in range(x,9):
                    if C[k]>0:
                        C[k]-=1
                        ANS[j]=k+1
                        flag=1
                        break

                if flag:
                    break

        break

#print(ANS,C)

for i in range(len(S)):
    if ANS[i]==-1:
        for j in range(9):
            if C[j]>0:
                C[j]-=1
                ANS[i]=j+1
                break

print("".join(map(str,ANS)))