from collections import Counter
import sys
input = sys.stdin.buffer.readline
sys.setrecursionlimit(10 ** 7)
mod = 10 ** 9 + 7

N = int(input())
G = [[] for _ in range(N)]
for _ in range(N - 1):
    a, b = map(int, input().split())
    a -= 1
    b -= 1
    G[a].append(b)
    G[b].append(a)

dist = [-1] * N
que = [0]
dist[0] = 1
while que:
    s = que.pop()
    for t in G[s]:
        if dist[t] == -1:
            dist[t] = dist[s] + 1
            que.append(t)

fact = 1
for i in range(1, N + 1):
    fact = fact * i % mod

ans = 0
for d, cnt in Counter(dist).items():
    p = pow(d, mod - 2, mod) * fact % mod
    ans += p * cnt
    ans %= mod

print(ans)