from fractions import gcd
from datetime import date, timedelta
from heapq import*
import math
from collections import defaultdict, Counter
import sys
from bisect import *
sys.setrecursionlimit(10 ** 7)
MOD = 10 ** 9 + 7


def main():
    n = int(input())
    a = [list(map(int, input().split())) for i in range(n)]
    
    ansl = []
    c = 0
    check  = 0
    while check != n:
        check = 0
        for i in range(n):
            p = a[i][0]
            if p  > c :
                ansl.append(a[i][c+1])
            else:
                check += 1
        c+=1
    print(*ansl)


if __name__ == '__main__':
    main()