import sys
sys.setrecursionlimit(10**6)
N = int(input())
graph = [[] for i in range(N+1)]
for i in range(N-1):
    u, v = map(int, input().split())
    graph[u].append(v)
    graph[v].append(u)
visited = [False for i in range(N+1)]
distance = [1 for i in range(N+1)]


def dfs(S):
    visited[S] = True
    for node in graph[S]:
        if visited[node] == False:
            visited[node] = True
            distance[node] = distance[S]+1
            dfs(node)


dfs(1)
mod = 10**9+7
power = 1
for i in range(1, N+1):
    power *= i
    power %= mod


def rev(X, mod):
    return pow(X, mod-2, mod)


ans = 0
for i in range(1, N+1):
    ans += power*rev(distance[i],mod) % mod
print(ans % mod)