# -*- coding: utf-8 -*-
"""
No.556 仁義なきサルたち
https://yukicoder.me/problems/no/556

"""
import sys
from sys import stdin
input = stdin.readline


def solve(monkeys, M):
    for _ in range(M):
        a, b = map(int, input().split())
        a_boss = monkeys[a][0]
        b_boss = monkeys[b][0]
        if a_boss == b_boss:
            continue
        if len(monkeys[a_boss][1]) > len(monkeys[b_boss][1]) or (len(monkeys[a_boss][1]) == len(monkeys[b_boss][1]) and a_boss < b_boss):
            monkeys[b_boss][0] = a_boss
            monkeys[a_boss][1].append(b_boss)
            for b in monkeys[b_boss][1]:
                monkeys[b][0] = a_boss
                monkeys[a_boss][1].append(b)
        else:
            monkeys[a_boss][0] = b_boss
            monkeys[b_boss][1].append(a_boss)
            for a in monkeys[a_boss][1]:
                monkeys[a][0] = b_boss
                monkeys[b_boss][1].append(a)


def main(args):
    N, M = map(int, input().split())
    monkeys = [[x, []] for x in range(N+1)]
    solve(monkeys, M)

    for m in monkeys[1:]:
        print(m[0])


if __name__ == '__main__':
    main(sys.argv[1:])