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mod stuff;
use crate::stuff::{is_galaxy, read_helper, cumulative_sum_expansion, distance, Position};
fn main() {
let mut stdin = std::io::stdin().lock();
let mut buf: Vec<u8> = Vec::new();
let mut galaxies: Vec<Position> = Vec::new();
let num_bytes = read_helper(&mut stdin, &mut buf, b'\n').expect("IO error");
if num_bytes == 0 { panic!("Malformed input"); }
let mut col_empty_mask: Vec<bool> = Vec::from_iter(std::iter::repeat(true).take(buf.len()));
let mut row_empty_mask: Vec<bool> = Vec::new();
loop {
let mut row_empty: bool = true;
let i = row_empty_mask.len();
for (j, & c) in (& buf).into_iter().enumerate() {
if is_galaxy(c) {
col_empty_mask[j] = false;
row_empty = false;
galaxies.push([i, j]);
}
}
row_empty_mask.push(row_empty);
let num_bytes = read_helper(&mut stdin, &mut buf, b'\n').expect("IO error");
if num_bytes == 0 { break; }
}
let cumulative_row_sum: Vec<usize> = cumulative_sum_expansion(& row_empty_mask, 1_000_000);
let cumulative_col_sum: Vec<usize> = cumulative_sum_expansion(& col_empty_mask, 1_000_000);
let mut res: usize = 0;
for (i, pos_1) in (& galaxies).into_iter().enumerate() {
for (_, pos_2) in (& galaxies).into_iter().enumerate().skip(i) {
res += distance(& cumulative_row_sum, & cumulative_col_sum, pos_1, pos_2);
}
}
println!("{}", res);
}
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