sqlite3, 174 bytes

Result

AC

Duration

1009ms

Code [DL]

with x(v,j,k)as(select v,substr(v,length(-v))-2 j,1 k from i union select v,j,k+1 from x where v-k)select printf('*%.'||j||'c*',case when(k in(1,v+0))then'*'else' 'end)from x

stdin

71
73

stdout

*************************************************************************
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*************************************************************************

stderr