use itertools::Itertools;

fn main() {
    let input: String = include_str!("../../input").to_string();
    let mut calories: Vec<usize> = Vec::new();

    for (key, group) in &input.lines().group_by(|line| line.is_empty()) {
        if key {
            calories.push(group.into_iter().map(|i| i.parse::<usize>().unwrap()).sum());
        }
    }

    println!("{}", calories.iter().max().unwrap());
}