half-baked partial start to day 7

2022/Cargo.toml

@@ -35,3 +35,5 @@ path = "src/day6.rs"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+regex = "1.7.0"
+lazy_static = "1.4.0"