n = int(input())
m = int(input())
vector = []
for i in range(m):
    y = input()
    vector.append(y.split())
for i in range(m):
    for j in range(m):
        for k in range(i + 1, m):
            if i == j or i == k or j == k:
                continue
            sum1 = 0
            for u in range(n):
                q1 = abs(int(vector[i][u + 1]) - int(vector[j][u + 1]))
                if int(vector[j][u + 1]) > int(vector[i][u + 1]):
                    q1 *= -1
                q2 = abs(int(vector[j][u + 1]) - int(vector[k][u + 1]))
                if int(vector[j][u + 1]) > int(vector[k][u + 1]):
                    q2 *= -1
                sum1 += q1 * q2
            if sum1 == 0:
                print(vector[i][0], vector[j][0], vector[k][0])