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+# Advent of Code 2023
+
+This is my first year trying the AoC. I decided to use C because it is the
+language I know the best and I am familiar with the standard library.
+
+## Instructions
+
+Compile with `-std=c99` and other required options, for example
+
+```
+$ cc -std=c99 -lm 06/6a.c
+```
+
+My solutions read from stdin, so run the e.g. with
+
+```
+$ ./a.out <in.txt
+```