js-built_in">int</span>

    
<span class="hljs-keyword">type</span>
  <span class="hljs-type">Number</span> = <span class="hljs-keyword">object</span>
    values: <span class="hljs-built_in">seq</span>[<span class="hljs-built_in">int</span>]
    lefts: <span class="hljs-built_in">seq</span>[<span class="hljs-built_in">seq</span>[<span class="hljs-built_in">bool</span>]]

<span class="hljs-keyword">func</span> parse(text: <span class="hljs-built_in">string</span>): <span class="hljs-type">Number</span> =
  