import sys
from collections import deque

input = sys.stdin.buffer.readline

MOD = 10 ** 9 + 7
MAX = 2 * 10 ** 5 + 10
modinv = lambda a, mod=MOD: pow(a, mod - 2, mod)
fac = [1] * MAX
for i in range(1, MAX):
    fac[i] = fac[i - 1] * i % MOD

N = int(input())
T = [[] for _ in range(N)]
UV = [tuple(int(x) - 1 for x in input().split()) for _ in range(N - 1)]
for u, v in UV:
    T[u].append(v)
    T[v].append(u)

# dfs
d = deque([0])
nonvisited = [True] * N
nonvisited[0] = False
height = [0] * N
while d:
    v = d.pop()
    h = height[v] + 1
    for x in T[v]:
        if nonvisited[x]:
            d.append(x)
            nonvisited[x] = False
            height[x] = h

ans = 0
for h in height:
    ans += fac[N] * modinv(h + 1)
    ans %= MOD
print(ans)