+If you're profiling, compile and run with
+```
+ghc -O2 --make advent01.hs -prof -auto-all -caf-all -fforce-recomp -rstopts
+time ./advent01 +RTS -p -hy
+```
+
+and create the profile picture with `h2ps advent01.hp` .
+
+Build this readme file wth
+```
+pandoc -s README.md > README.html
+```
+
+(Using the [Modest style](https://github.com/markdowncss/modest).)
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