feat: add runtime to output

1 files changed, 13 insertions, 5 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 620bcf0..07918e3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -37,11 +37,19 @@ pub trait Solution: Problem {
     fn part_2(input: &str) -> anyhow::Result<Self::Answer2>;
 
     fn solve() -> anyhow::Result<()> {
-        println!("Day {}.1", Self::DAY);
-        println!("{}\n", Self::part_1(Self::INPUT)?);
-
-        println!("Day {}.2", Self::DAY);
-        println!("{}\n", Self::part_2(Self::INPUT)?);
+        print!("Day {}.1", Self::DAY);
+        let timer = std::time::SystemTime::now();
+        let answer = Self::part_1(Self::INPUT)?;
+        let duration = timer.elapsed()?;
+        println!(" ({:.2}ms)", duration.as_micros() as f64 / 100f64);
+        println!("{answer}\n");
+
+        print!("Day {}.2", Self::DAY);
+        let timer = std::time::SystemTime::now();
+        let answer = Self::part_2(Self::INPUT)?;
+        let duration = timer.elapsed()?;
+        println!(" ({:.2}ms)", duration.as_micros() as f64 / 100f64);
+        println!("{answer}\n");
 
         Ok(())
     }