Remove useless import

diff --git a/src/day03.rs b/src/day03.rs
index a15f11b..5deba68 100644 (file)
--- a/src/day03.rs
+++ b/src/day03.rs
@@ -1,4 +1,4 @@
-use std::io::{BufRead, Lines};
+use std::io::BufRead;
 
 use itertools::Itertools;
 
@@ -32,18 +32,18 @@ where
     R: BufRead
 {
     let mut sum = 0;
-    let mut item_count = [0i32; 52];
+    let mut item_set = [0u8; 52];
     for group in reader.lines().chunks(3).into_iter() {
-        item_count.fill(0);
+        item_set.fill(0);
         for (i, rucksack) in group.enumerate() {
             let items = rucksack.unwrap();
             for b in items.as_bytes().into_iter() {
                 let v = letter_to_priority(*b);
-                if i == 2 && item_count[v as usize - 1] == 3 {
+                if i == 2 && item_set[v as usize - 1] == 3 {
                     sum += v as i32;
                     break;
                 }
-                item_count[v as usize - 1] |= 1 << i;
+                item_set[v as usize - 1] |= 1 << i;
             }
         }
     }