#!/usr/bin/env python3.8
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
MOD = 10 ** 9 + 7

N = int(readline())
m = map(int, read().split())
AB = zip(m, m)
deg = [0] * (N + 1)
for a, b in AB:
    deg[a] += 1
    deg[b] += 1

leaf = sum(x == 1 for x in deg)
fact = [1] * N
for n in range(1, N):
    fact[n] = fact[n - 1] * n % MOD

num = fact[N - 1] * fact[N - 2]
den = fact[leaf - 1] * fact[N - leaf] * fact[leaf - 1] * fact[N - leaf - 1] * leaf
answer = num * pow(den, MOD - 2, MOD) % MOD
print(answer)