#[macro_export]
macro_rules! setup {
    { mut $input:ident: SplitWhitespace $(,)? } => {
        use std::io::Read;
        let mut buf = String::new();
        std::io::stdin().read_to_string(&mut buf).ok();
        let mut $input = buf.split_whitespace();
    };
}

#[macro_export]
macro_rules! parse_next {
    ($str_iter:expr) => {
        $str_iter.next().unwrap().parse().ok().unwrap()
    };
}

fn main() {
    setup! { mut input: SplitWhitespace };

    let n: usize = parse_next!(input);
    let m: usize = parse_next!(input);
    let mut item1: Vec<usize> = vec![];
    let mut item2: Vec<usize> = vec![];
    let mut score: Vec<usize> = vec![];
    (0..m).for_each(|_| {
        item1.push(parse_next!(input));
        item2.push(parse_next!(input));
        score.push(parse_next!(input));
    });

    let mut map = std::collections::HashMap::new();
    for i in 0..m {
        map.insert((item1[i], item2[i]), score[i]);
    }

    let mut vec = vec![0];
    for i in 1..n {
        let mut index = 0;
        let mut max = 0;
        for j in 0..=vec.len() {
            let mut score = 0;
            for k in 0..j {
                if let Some(value) = map.get(&(vec[k], i)) {
                    score += value;
                }
            }
            for k in j..vec.len() {
                if let Some(value) = map.get(&(i, vec[k])) {
                    score += value;
                }
            }
            if score >= max {
                index = j;
                max = score;
            }
        }
        if index == vec.len() {
            vec.push(i);
        } else {
            vec.insert(index, i);
        }
    }

    let ans = (|| {
        let mut score = 0;
        for i in 0..n {
            for j in i..n {
                if let Some(value) = map.get(&(vec[i], vec[j])) {
                    score += value;
                }
            }
        }
        score
    })();

    println!("{}", ans);
}