diff --git a/src/lib.rs b/src/lib.rs
index 9d9c227..39bba42 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,6 +7,5 @@ pub mod machreduce;
 
 pub fn readlines() -> Vec<String> {
     let stdin = std::io::stdin();
-    let v = stdin.lines().map(|x| x.unwrap()).collect();
-    v
+    stdin.lines().map(|x| x.unwrap()).collect()
 }