day06

3 files changed, 101 insertions, 0 deletions

diff --git a/day06 b/day06
new file mode 100644
index 0000000..e544bbd
--- /dev/null
+++ b/day06
@@ -0,0 +1,50 @@
+195, 221
+132, 132
+333, 192
+75, 354
+162, 227
+150, 108
+46, 40
+209, 92
+153, 341
+83, 128
+256, 295
+311, 114
+310, 237
+99, 240
+180, 337
+332, 176
+212, 183
+84, 61
+275, 341
+155, 89
+169, 208
+105, 78
+151, 318
+92, 74
+146, 303
+184, 224
+285, 348
+138, 163
+216, 61
+277, 270
+130, 155
+297, 102
+197, 217
+72, 276
+299, 89
+357, 234
+136, 342
+346, 221
+110, 188
+82, 183
+271, 210
+46, 198
+240, 286
+128, 95
+111, 309
+108, 54
+258, 305
+241, 157
+117, 162
+96, 301
diff --git a/day06.k b/day06.k
new file mode 100644
index 0000000..cbe9cf2
--- /dev/null
+++ b/day06.k
@@ -0,0 +1,3 @@
+d:.:'1:`day06
+c@*(>c:#:'=,/r)^,/(*r;*|r;*+r;*|+r:{d@*<+/'v|-v:x-/:d}''500 500#+!500 500) / 3882
++/~9999<(+//{x|-x}d-\:)'+!500 500  / 43852
diff --git a/day06.rs b/day06.rs
new file mode 100644
index 0000000..02d5ffc
--- /dev/null
+++ b/day06.rs
@@ -0,0 +1,48 @@
+use std::fs::File;
+use std::collections::{HashMap, HashSet};
+use std::io::{BufRead, BufReader};
+
+fn l1(a: (i32, i32), b: (i32, i32)) -> i32 {
+    (a.0 - b.0).abs() + (a.1 - b.1).abs()
+}
+
+fn main() {
+    let f = File::open("day06").unwrap();
+
+    let v: Vec<Vec<i32>> = BufReader::new(&f)
+        .lines()
+        .map(|l| {
+            l.unwrap().split(", ").map(|x| x.parse().unwrap()).collect()
+        })
+        .collect();
+
+    let mut c = HashMap::new();
+    let mut b = HashSet::new();
+
+    let mut s = 0;
+
+    for x in 0..500 {
+        for y in 0..500 {
+            let next = v.iter()
+                .min_by_key(|p| l1((x, y), (p[0], p[1]))).unwrap();
+            *c.entry(next).or_insert(0) += 1;
+
+            if x == 0 || x == 499 || y == 0 || y == 499 {
+                b.insert(next);
+            }
+
+            if v.iter().map(|p| l1((x, y), (p[0], p[1]))).sum::<i32>() < 10000 {
+                s += 1;
+            }
+        }
+    }
+
+    println!(
+        "{}",
+        c.iter()
+            .filter(|(k, _)| !b.contains(*k))
+            .max_by_key(|(_, v)| *v)
+            .unwrap().1
+    );
+    println!("{}", s);
+}