int input for in range append list map int input split for in range fo

n = int(input())

a = 0

b = 0

A = []

for i in range(n):

    A.append(list(map(int, input().split())))

    

for i in range(n):

    for j in range(n):

        a += A[j][i]

        a += A[i][j]

        if j == i:

            a -= A[j][i]

            a -= A[i][j]

    if a == 0:

        print(i+1, end = ' ')

        b += 1

    a = 0

if b == 0:

    print(0)