From a94eca12bfa36abf940b6fa3976193f800f56ec0 Mon Sep 17 00:00:00 2001
From: CrispyPin <crispin@tasa.se>
Date: Sat, 9 Dec 2023 23:29:55 +0100
Subject: [PATCH] Completed 6.2

---
 day_06/Cargo.toml  |  1 -
 day_06/input.txt   |  4 ++--
 day_06/src/main.rs | 22 ++--------------------
 3 files changed, 4 insertions(+), 23 deletions(-)

diff --git a/day_06/Cargo.toml b/day_06/Cargo.toml
index 2f57cbd..216c73c 100644
--- a/day_06/Cargo.toml
+++ b/day_06/Cargo.toml
@@ -6,4 +6,3 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-num-integer = "0.1.45"
diff --git a/day_06/input.txt b/day_06/input.txt
index 28f5ae9..3968d4a 100644
--- a/day_06/input.txt
+++ b/day_06/input.txt
@@ -1,2 +1,2 @@
-Time:      7  15   30
-Distance:  9  40  200
+Time:        53     91     67     68
+Distance:   250   1330   1081   1025
diff --git a/day_06/src/main.rs b/day_06/src/main.rs
index e4ae126..483137d 100644
--- a/day_06/src/main.rs
+++ b/day_06/src/main.rs
@@ -1,7 +1,5 @@
 use std::fs;
 
-use num_integer::Roots;
-
 fn main() {
 	let data = fs::read_to_string("input.txt").unwrap();
 	let (time_str, record_str) = data.split_once('\n').unwrap();
@@ -25,17 +23,8 @@ fn main() {
 	let big_time: i64 = time_str[7..].replace(' ', "").parse().unwrap();
 	let big_record: i64 = record_str[9..].trim().replace(' ', "").parse().unwrap();
 
-	/*
-	distance = held * (time - held)
-
-	held * (time - held) = record
-	held*time - held*held = record
-	held*time - held*held - record = 0
-	held*held - held*time + record = 0
-	*/
-	// let lower = ((time * time / 4) - record).sqrt() - time / 2;
-	// let upper = -((time * time / 4) - record).sqrt() - time / 2;
-	// println!("{lower} -> {upper}");
+	println!("{} {}", big_time, big_record);
+	println!("{}", beat(big_time, big_record));
 }
 
 fn beat(time: i64, record: i64) -> i64 {
@@ -46,12 +35,5 @@ fn beat(time: i64, record: i64) -> i64 {
 			variants += 1;
 		}
 	}
-
-	let time = time as f64;
-	let record = record as f64;
-	let lower = ((time * time / 4.0) - record).sqrt() - time / 2.0;
-	let upper = -((time * time / 4.0) - record).sqrt() - time / 2.0;
-	println!("{lower} -> {upper}");
-
 	variants
 }