import time
N,M = [int(i) for i in input().split()]
battle = []
for i in range (M):
    battle.append(list(int(i) for i in input().split()))
monkey = list(range(1,N+1))
group = []
for i in range(N):
    group.append([(monkey[i])])
#print(group,battle)
def bat(a,b):
    if a == b:
        return a
    elif len(a) == len(b):
        if a[0] < b[0]:
            return a + b
        if b[0] < a[0]:
            return b + a
    elif len(a) > len(b):
        return a + b
    elif len(b) > len(a):
        return b + a

for i in range(M):
    for j in range(len(group)):
        if battle[i][0] in group[j]:
            x = group[j]
        if battle[i][1] in group[j]:
            y = group[j]
    if x != y:
        group.remove(x)
        group.remove(y)
    else:
        group.remove(x)
    group.append(bat(x,y))
for i in group:
    for j in i:
        monkey[j-1] = group[group.index(i)][0]
for i in range(N):
    print(monkey[i])