f = open('file', 'r')

n = int(f.readline())

arr = []

for i in range(0, n):
    arr.append(list(map(int, f.readline().split())))

more_than0 = []

for i in range(0, n):
    for j in range(0, n):
        if arr[i][j] > 0:
            more_than0.append(arr[i][j])

print(more_than0)

max_elem = arr[0][0]
number_of_row = 0
for i in range(0, n):
    if arr[i][i] > max_elem:
        max_elem = arr[i][i]
        number_of_row = i

for i in range(0, n):
    print(arr[number_of_row][i], end=' ')

print()