3.rs

#![feature(conservative_impl_trait)]

fn parse<'a>(input: &'a str) -> impl 'a + Iterator<Item = (u32, u32, u32)> {
    input.lines().map(|l| {
        let mut words = l.split_whitespace();
        let mut get = || words.next().unwrap().parse().unwrap();
        (get(), get(), get())
    })
}

fn main() {
    let input = include_str!("../../input/3");
    let n_possible = parse(input).filter(|&(a, b, c)| a + b > c && a + c > b && c + b > a).count();
    println!("{}", n_possible);
}