#![allow(unused_mut, non_snake_case,unused_imports)]
use std::iter;
use std::cmp::{max, min, Ordering};
use std::mem::{swap};
use std::collections::{HashMap,BTreeMap,HashSet,BTreeSet,BinaryHeap,VecDeque};
use std::iter::FromIterator;
use std::sync::*;

//　高速 EOF要
//macro_rules! input {(source = $s:expr, $($r:tt)*) => {let mut iter = $s.split_whitespace();input_inner!{iter, $($r)*}};($($r:tt)*) => {let mut 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")};}
// 低速 EOF不要
macro_rules! input {(source = $s:expr, $($r:tt)*) => {let mut iter = $s.split_whitespace();let mut next = || { iter.next().unwrap() };input_inner!{next, $($r)*}};($($r:tt)*) => {let stdin = std::io::stdin();let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));let mut next = move || -> String{bytes.by_ref().map(|r|r.unwrap() as char).skip_while(|c|c.is_whitespace()).take_while(|c|!c.is_whitespace()).collect()};input_inner!{next, $($r)*}};}
macro_rules! input_inner {($next:expr) => {};($next:expr, ) => {};($next:expr, $var:ident : $t:tt $($r:tt)*) => {let $var = read_value!($next, $t);input_inner!{$next $($r)*}};}
macro_rules! read_value {($next:expr, ( $($t:tt),* )) => {( $(read_value!($next, $t)),* )};($next:expr, [ $t:tt ; $len:expr ]) => {(0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()};($next:expr, chars) => {read_value!($next, String).chars().collect::<Vec<char>>()};($next:expr, usize1) => {read_value!($next, usize) - 1};($next:expr, $t:ty) => {$next().parse::<$t>().expect("Parse error")};}

/*
 <url:>
 問題文============================================================
 =================================================================
 解説=============================================================
 ================================================================
 */

fn calc(N:usize,V:Vec<usize>) -> usize{
    let mut ret = 0;
    for i in 0..N{
        for j in i+1..N{
            let mut T = 0;
            for k in 0..i{
                if V[i] > V[j]{ // 凸
                    if V[i] > V[k]{
                        T = max(T,V[i]);
                        break;
                    }
                    continue;
                }
                if V[i] < V[j]{ // 凹
                    if V[k] > V[i]{
                        T = max(T,max(V[j],V[k]));
                    }
                }
            }
            for k in i+1..j{
                if V[k] > V[i] && V[k] > V[j]{// 凸
                    T = max(T,V[k]);
                    continue;
                }
                if V[k] < V[i] && V[k] < V[j]{// 凹
                    T = max(T,max(V[i],V[j]));
                    continue;
                }

            }
            for k in j+1..N{
                if V[j] > V[i] { // 凸
                    if V[j] > V[k]{
                        T = max(T,V[j]);
                        break;
                    }
                }
                if V[j] < V[i]{
                    if V[j] < V[k]{
                        T = max(T,max(V[i],V[k]));
                    }
                }
            }
            ret += T;
        }
    }
    return ret;
}
fn main(){
    input!(N:usize,M:usize,E:[[usize;N];M]);
    let N:usize = N;
    let M:usize = M;

    let mut E:Vec<Vec<usize>> = E;
    for i in 0..M{ E[i].push(i); }


    let Ans = Arc::new(Mutex::new(vec![0;M]));
    {
        for V in E.into_iter(){
            let Ans = Ans.clone();
            std::thread::spawn(move||{
                let &idx = V.last().unwrap();
                let ret = calc(N,V);
                loop {
                    let mut Ans = Ans.lock().unwrap();
                    if Ans[idx] == 0{
                        // println!("-> {}",ret);
                        Ans[idx] = ret;
                        break;
                    }
                }
            });
        }
    }

    std::thread::sleep_ms(1995);
    let mut Ans = Ans.lock().unwrap();
    let &maxv = (*Ans).iter().max().unwrap();
    for i in 0..M{
        if maxv == Ans[i]{
            println!("{}",i);
            break;
        }
    }
}