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2 years ago
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l,jame=map(int,input().split())
len2=l
res_max=""
res_komaki=0
def max(jame2):
    global l
    global res_max
    global res_komaki
    while(jame2>=10) :
        jame2-=9
        res_max+=str(9)
        l-=1
    if jame2<=9 :
            res_max+=str(jame2)
            l-=1  
    res_komaki=int(res_komaki)+int(res_max)-1
    for i in range(l) :
        res_max+="0"

    return(res_max)


def min(jame3) :
    global res_komaki
    global l
    if l>=1 :
      minn=str(res_komaki)+"0"*(l-1)+"1"
      return(minn[::-1])
    else :
      
      minn=str(int(res_komaki)+1)
      return(minn[::-1])
 
maxx=max(jame)
if int(res_max)<=0 :
    print(-1,-1)
else :
    print(maxx,min(jame))
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