//https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8 より
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };
    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };
    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };
    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}

//

fn run() {
    input! {
        n: usize,
        m: usize,
        a: [[i64; m]; n],
    }
    let mut x = vec![0; m];
    for a in a.iter() {
        for (x, a) in x.iter_mut().zip(a.iter()) {
            *x += *a;
        }
    }
    let mut y = vec![0; m];
    let mut a = a;
    let mut ans = x.iter().fold(0, |s, a| s + a.pow(2));
    for _ in 0..(n / 2) {
        let mut b = vec![];
        for (i, a) in a.iter().enumerate() {
            let mut sum = 0;
            for (a, (x, y)) in a.iter().zip(x.iter().zip(y.iter())) {
                sum += -2 * *a * (*x + *y);
            }
            b.push((sum, i));
        }
        b.sort();
        let p = b[0].1;
        let q = b[1].1;
        ans += b[1].0;
        for (x, (y, a)) in x.iter_mut().zip(y.iter_mut().zip(a[q].iter())) {
            *x -= *a;
            *y += *a;
        }
        if p > q {
            a.remove(p);
            a.remove(q);
        } else {
            a.remove(q);
            a.remove(p);
        }
    }
    println!("{}", ans);
}

fn main() {
    run();
}