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#![feature(iter_order_by)]
use aoc::grid::{chebyshev_ball, Grid};
use std::io;
fn main() -> io::Result<()> {
let grid: Vec<Vec<char>> = io::stdin()
.lines()
.map(|line| line.unwrap().chars().collect())
.collect();
let grid = Grid::new(grid);
let silver: usize = silver(&grid);
let gold: usize = gold(&grid);
println!("silver: {silver}");
println!("gold: {gold}");
return Ok(());
}
fn silver(grid: &Grid<char>) -> usize {
grid.points()
.flat_map(|p| chebyshev_ball(1).map(move |dp| grid.ray(p, dp)))
.map(|cs| cs.take(4).eq_by("XMAS".chars(), |a, b| *a == b))
.filter(|p| *p)
.count()
}
fn gold(grid: &Grid<char>) -> usize {
let xmas: Vec<(i64, i64)> = vec![(0, 0), (-1, -1), (1, -1), (-1, 1), (1, 1)];
grid.points()
.map(move |p| {
xmas.iter()
.map(|&d| grid.move_pos(p, d.into(), 1).and_then(|p| grid.at(p)))
.collect::<Option<Vec<_>>>()
})
.flatten()
.map(|cs| {
vec!["AMSMS", "AMMSS", "ASMSM", "ASSMM"]
.iter()
.map(|x| cs.iter().eq_by(x.chars(), |&&a, b| a == b))
.any(|p| p)
})
.filter(|p| *p)
.count()
}
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