n, m = map(int, input().split())

mx, mn = 0, 0
a = [i for i in range(1, n + 1)]
for i in range(m):
    xp, yp, xq, yq = map(int, input().split())
    if i != 0:
        mn = min(mn, xp, xq)
        mx = max(mx, xp, xq)
    else:
        mn = min(xp, xq)
        mx = max(xp, xq)
    a[mn - 1], a[mx - 1] = a[mx - 1], a[mn - 1]

for i in range(n):
    print(a[i])