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#[derive(Copy, Clone, Hash, Eq, PartialEq)]
pub struct Pos {
pub x: i64,
pub y: i64
}
#[derive(Copy, Clone, Ord, PartialOrd, Eq, PartialEq)]
pub struct Range {
pub left: i64,
pub right: i64
}
#[derive(Copy, Clone, Hash, Eq, PartialEq)]
pub struct Sensor {
pub s: Pos,
pub b: Pos,
pub d: i64
}
pub fn distance(p: Pos, q: Pos) -> i64 {
(p.x-q.x).abs() + (p.y-q.y).abs()
}
impl Sensor {
pub fn from_line(line: &str) -> Sensor {
let mut i = 1 + line.find('=').unwrap();
let mut j = line.find(',').unwrap();
let sx = line[i..j].parse::<i64>().unwrap();
i = j+4;
j = line.find(':').unwrap();
let sy = line[i..j].parse::<i64>().unwrap();
i = 1 + j + line[j..].find('=').unwrap();
j = i + line[i..].find(',').unwrap();
let bx = line[i..j].parse::<i64>().unwrap();
i = j+4;
j = line.len()-1;
let by = line[i..j].parse::<i64>().unwrap();
let s = Pos { x: sx, y: sy };
let b = Pos { x: bx, y: by };
let d = distance(s, b);
Sensor { s, b, d }
}
pub fn get_range(&self, y: i64) -> Range {
let d = distance(self.s, Pos { x: self.s.x, y });
Range {
left: self.s.x - self.d + d,
right: self.s.x + self.d - d
}
}
}
pub fn read_sensors_from_stdin() -> Vec<Sensor> {
let mut v = Vec::<Sensor>::new();
let mut line = String::new();
while std::io::stdin().read_line(&mut line).unwrap() > 0 {
v.push(Sensor::from_line(&line));
line.clear();
}
v
}
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