let n = read_int() in
let rec f n i c a=if i<n then f n (i+1) c c^a else a in let a =" "^(f n 0 "  ##" "")^"\n" in let b= "#"^(f n 1 "   #" "")^"\n" in print_string (a^" "^b^b^b^b^" "^b^a);;