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-rw-r--r--2024/1/p1.rs23
1 files changed, 23 insertions, 0 deletions
diff --git a/2024/1/p1.rs b/2024/1/p1.rs
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+const INPUT_FILE: &str = "input";
+
+fn main() {
+ let input = std::fs::read_to_string(INPUT_FILE).expect("Reading input file");
+ let mut left: Vec<u32> = vec![];
+ let mut right: Vec<u32> = vec![];
+ for line in input.lines() {
+ let mut fields = line.split_whitespace();
+ let e = "Wrong file format";
+ left.push(fields.next().expect(e).parse().expect(e));
+ right.push(fields.next().expect(e).parse().expect(e));
+ }
+ left.sort_unstable();
+ right.sort_unstable();
+
+ let mut distance: u32 = 0;
+ for i in 0..left.len() {
+ let l = left[i];
+ let r = right[i];
+ distance += if l >= r { l - r } else { r - l };
+ }
+ println!("Distance: {}", distance);
+}