import sys; input = sys.stdin.buffer.readline
sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

class Combination(object):
	def __init__(self, N, con):
		self.fac = [0] * (N + 1)
		self.inv = [0] * (N + 1)
		self.finv = [0] * (N + 1)
		self.fac[0], self.fac[1] = 1, 1
		self.inv[1] = 1
		self.finv[0], self.finv[1] = 1, 1

		for i in range(2, N + 1):
			self.fac[i] = self.fac[i - 1] * i % con
			self.inv[i] = self.inv[con % i] * (con - (con // i)) % con
			self.finv[i] = self.finv[i - 1] * self.inv[i] % con

	def com(self, N, k):
		return (self.fac[N] * self.finv[k] * self.finv[N - k]) % con

class Graph(object):
	def __init__(self):
		self.graph = defaultdict(list)

	def __len__(self):
		return len(self.graph)

	def add_edge(self, a, b):
		self.graph[a].append(b)

def DFS(G, W, visit, node):
	for i in G.graph[node]:
		if visit[i] != 1:
			visit[i] = 1
			DFS(G, W, visit, i)
			W[node] += W[i]

#処理内容
def main():
	N = int(input())
	G = Graph()
	for i in range(N - 1):
		a, b = getlist()
		a -= 1; b -= 1
		G.add_edge(a, b)
		G.add_edge(b, a)

	W = [1] * N
	visit = [0] * N
	visit[0] = 1
	DFS(G, W, visit, 0)

	#部分木 大きさ
	leaf_cnt = 0
	for i in W:
		if i == 1:
			leaf_cnt += 1

	C = Combination(N, con)
	ans = C.com(N - 1, leaf_cnt - 1) * C.com(N - 2, leaf_cnt - 1) * pow(leaf_cnt, con - 2, con)
	ans %= con
	print(ans)

if __name__ == '__main__':
	main()