From d0b988bb748038ec88b63d4d7ba0885be8221bed Mon Sep 17 00:00:00 2001
From: Leah Neukirchen <leah@vuxu.org>
Date: Wed, 5 Dec 2018 18:13:02 +0100
Subject: day03

---
 day03.rs | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 day03.rs

(limited to 'day03.rs')

diff --git a/day03.rs b/day03.rs
new file mode 100644
index 0000000..2fe5db5
--- /dev/null
+++ b/day03.rs
@@ -0,0 +1,46 @@
+use std::fs::File;
+use std::collections::{HashSet, HashMap};
+use std::io::{BufRead, BufReader};
+
+fn main() {
+    let f = File::open("day03").unwrap();
+
+    let d: Vec<_> = BufReader::new(&f)
+        .lines()
+        .map(|line| {
+            let line = line.unwrap();
+            let v: Vec<&str> = line.split(
+                |c| c == '#' || c == ',' || c == ' ' || c == 'x' || c == ':'
+            ).collect();
+            (
+                v[1].parse::<i32>().unwrap(),
+                v[3].parse::<i32>().unwrap(),
+                v[4].parse::<i32>().unwrap(),
+                v[6].parse::<i32>().unwrap(),
+                v[7].parse::<i32>().unwrap(),
+            )
+        })
+        .collect();
+
+    let mut seen = HashMap::new();
+    let mut seen_twice = HashSet::new();
+
+    let mut claims: HashSet<_> = d.iter().map(|x| x.0).collect();
+
+    for v in d {
+        for x in v.1..v.1 + v.3 {
+            for y in v.2..v.2 + v.4 {
+                if let Some(id) = seen.insert((x, y), v.0) {
+                    seen_twice.insert((x, y));
+                    claims.remove(&id);
+                    claims.remove(&v.0);
+                }
+            }
+        }
+    }
+
+    println!("{}", seen_twice.len());
+    for c in claims {
+        println!("{}", c)
+    }
+}
-- 
cgit 1.4.1