fn main() {
	let input = include_str!("input.txt").as_bytes();

	const LAYER_SIZE: usize = 6*25;
	assert_eq!(input.len() % LAYER_SIZE, 0);

	let layers = input.chunks(LAYER_SIZE).collect::<Vec<_>>();
	let min0_product12 = layers.iter().map(|layer| {
		let mut count = [0, 0, 0];
		for b in *layer {
			let digit = *b - b'0';
			if digit < 3 {
				count[digit as usize] += 1;
			}
		}
		(count[0], count[1]*count[2])
	}).min_by_key(|(zeroes, _product12)| *zeroes).unwrap().1;
	println!("Product of counts of 1 and 2 for the layer with min 0s: {}", min0_product12);

	let mut image = [2u8; LAYER_SIZE];
	for layer in layers {
		for (ndx, b) in layer.into_iter().enumerate() {
			let digit = *b - b'0';
			if image[ndx] != 2 { continue; }
			image[ndx] = digit;
		}
	}

	for row in image.chunks(25) {
		for cell in row {
			match cell {
				1 => print!("#"),
				_ => print!(" "),
			}
		}
		println!("");
	}
}