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<pre><code class="nim hljs"><span class="hljs-keyword">import</span> nimib
<span class="hljs-keyword">import</span> deques, sequtils, parseutils, strutils, intsets

nbInit
nbText: <span class="hljs-string">&quot;&quot;&quot;# 2020, Day 9: Encoding Error

This turned out be to nice and easy but it does give satisfaction.

The strategy for first part is to use at the same 