Add README.md

Author: Morganamilo

Makefile

@@ -12,6 +12,9 @@ run-%-1: src/%-1
 run-%-2: src/%-2
 	./$< < in/$(@:run-%-2=%)
 
+run-stdin-%: src/%
+	./$<
+
 clean:
 	find src/ -type f  ! -name "*.*"  -delete
 

README.md

@@ -0,0 +1,27 @@
+## Buld and Run
+
+`make run-x-y`
+
+where x is the day and y is the part
+
+## Build
+
+`make src/x-y`
+
+where x is the day and y is the part
+
+## Build all
+
+`make`
+
+## Run With custom input 
+
+`make run-stdin-x-y < input_file`
+
+where x is the day and y is the part
+
+## Run Executable Directly
+
+`src/x-y < input file`
+
+this does not automatically rebuild when the code changes