# -*- coding: utf-8 -*-
"""
Created on Sat Jan 16 00:04:09 2016

@author: NEC-PCuser
"""


def calc_score(E, N):
    maxLeft, minLeft = calc_max_min_left(E)
    maxRight, minRight = calc_max_min_right(E)
    maxMid, minMid = calc_max_min_mid(E)
    score = 0
    for L in range(N-1):
        if L:
            maxL = maxLeft[L - 1]
            minL = minLeft[L - 1]
        else:
            maxL = 0
            minL = N + 1
        EL = E[L]
        maxMidLp = maxMid[L + 1]
        minMidLp = minMid[L + 1]
        for R in range(L + 1, N):
            ER = E[R]
            s = 0
            maxM = maxMidLp[R - 1]
            if maxM > EL and maxM > ER:
                s = maxM
            minM = minMidLp[R - 1]
            if minM < EL and minM < ER:
                s = max(s, EL, ER)
            if EL < ER:
                if maxL > EL:
                    s = max(s, ER, maxL)
                if R < N - 1:
                    minR = minRight[R + 1]
                    if minR < ER:
                        s = max(s, ER)
            else:
                if minL < EL:
                    s = max(s, EL)
                if R < N - 1:
                    maxR = maxRight[R + 1]
                    if maxR > E[R]:
                        s = max(s, EL, maxR)
            score += s
    return score


def calc_max_min_mid(E):
    n = len(E)
    maxMid = [[0] * n for _ in range(n)]
    minMid = [[n + 1] * n for _ in range(n)]
    for L in range(n - 1):
        maxMidL = maxMid[L]
        minMidL = minMid[L]
        maxMidL[L] = E[L]
        minMidL[L] = E[L]
        for R in range(L + 1, n):
            maxMidL[R] = max(maxMidL[R - 1], E[R])
            minMidL[R] = min(minMidL[R - 1], E[R])
    return maxMid, minMid


def calc_max_min_left(E):
    maxL = 0
    minL = 1000
    maxLeft = []
    minLeft = []
    for e in E:
        maxL = max(maxL, e)
        minL = min(minL, e)
        maxLeft.append(maxL)
        minLeft.append(minL)
    return maxLeft, minLeft

def calc_max_min_right(E):
    revE = E[:]
    revE.reverse()
    maxRight, minRight = calc_max_min_left(revE)
    maxRight.reverse()
    minRight.reverse()
    return maxRight, minRight



N, M = map(int, input().split())
Es = []
for m in range(M):
    Es.append(list(map(int, input().split())))

scores = [calc_score(E, N) for E in Es]
maxS = max(scores)
print(scores.index(maxS))