Files
AdventOfCode2023/day06/src/main.rs
2023-12-07 12:30:36 -05:00

57 lines
1.8 KiB
Rust

use std::fs;
fn main() {
let input = fs::read_to_string("input.txt").unwrap();
let input: Vec<_> = input.split('\n') // Separate the Time and Distance lines
.map(|line| {
line[line.find(':').unwrap() + 1..] // Drop "Time:" and "Distance:"
.split_whitespace() // Split the numbers into their own elements
.flat_map(|s| s.chars()).collect::<String>() // Combine the strings into a single one
.parse::<i64>().expect("Couldn't parse number") // Parse numbers into i32
}).collect(); // Collect into Vec
let time = input[0];
let dist = input[1];
let mut valid = 0;
for remaining_time in 0..time {
if (time - remaining_time) * remaining_time > dist {
valid += 1;
}
}
println!("{}", valid);
}
// use std::fs;
// fn main() {
// let input = fs::read_to_string("input.txt").unwrap();
// let input: Vec<_> = input.split('\n') // Separate the Time and Distance lines
// .map(|line| {
// line[line.find(':').unwrap() + 1..] // Drop "Time:" and "Distance:"
// .split_whitespace() // Split the numbers into their own elements.
// .map(|num| num.parse::<i32>().expect("Couldn't parse number")) // Parse numbers into i32
// .collect::<Vec<_>>()
// }).collect(); // collect into Vec
// let mut valid_total = 1;
// for round in 0..input.first().unwrap().len() {
// let time = input[0][round];
// let dist = input[1][round];
// let mut valid = 0;
// for remaining_time in 0..time {
// if (time - remaining_time) * remaining_time > dist {
// valid += 1;
// }
// }
// valid_total *= valid;
// }
// println!("{}", valid_total);
// }