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diff --git a/challenge-080/simon-proctor/raku/ch-1.raku b/challenge-080/simon-proctor/raku/ch-1.raku
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+++ b/challenge-080/simon-proctor/raku/ch-1.raku
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+#!/usr/bin/env raku
+
+use v6;
+
+#| Given a list of integers find the first positive integer not in the list.
+sub MAIN (
+    *@N where { $_.all ~~ Int } #= List of integers
+) {
+    say (1...*).first( * !~~ any(@N) );
+    
+}