function! s:output() let this = {'lines': []} function! this.append(line) abort call add(self.lines, a:line) endfunction function! this.build() abort return join(self.lines, "\n") endfunction return this endfunction function! s:main(input) abort let o = s:output() let n = str2nr(a:input[0]) let num_list = [] if n % 2 == 1 call add(num_list, 7) let n -= 3 endif while n > 0 call add(num_list, 1) let n -= 2 endwhile let r = join(num_list, '') call o.append(r) return o.build() endfunction let s:input = getline(1, '$') enew put =s:main(s:input) 2,$print