a,b=map(int,input().split()) begin=1*10**(a-1)-1 end=1*10**a xiao=0 da=0 flag=1 ff=1 for i in range(begin,end): t=i summ=0 while t>0: summ+=t%10 t//=10 if summ==b and flag==1: xiao=i flag=0 ff=0 if summ==b and flag==0: da=i ff=0 if ff==1: print(-1,-1) else: print(xiao,da)