Add solution to day 4

1 files changed, 2 insertions, 0 deletions

diff --git a/src/main.rs b/src/main.rs
index 094d48b..dcb7762 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,7 @@
 mod day_1;
 mod day_2;
 mod day_3;
+mod day_4;
 
 use std::fs::File;
 use std::io::{BufRead, BufReader};
@@ -30,6 +31,7 @@ fn run(day: u8, input: Vec<String>)
         1 => day_1::run(input),
         2 => day_2::run(input),
         3 => day_3::run(input),
+        4 => day_4::run(input),
         o => panic!("Day {} is not implemented (yet)", o),
     }
 }