#include <algorithm>
#include <bitset>
#include <cassert>
#include <cctype>
#include <chrono>
#define _USE_MATH_DEFINES
#include <cmath>
#include <cstdio>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iostream>
#include <iterator>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <tuple>
#include <utility>
#include <vector>
using namespace std;

#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()

const int INF = 0x3f3f3f3f;
const long long LINF = 0x3f3f3f3f3f3f3f3fLL;
const double EPS = 1e-8;
const int MOD = 1000000007; // 998244353;
const int dy[] = {1, 0, -1, 0}, dx[] = {0, -1, 0, 1};
/*-------------------------------------------------*/
int cnt[200000] = {};
vector<int> edge[200000];
void dfs(int ver) {
  for (int e : edge[ver]) if (cnt[e] == 0) {
    cnt[e] = cnt[ver] + 1;
    dfs(e);
  }
}

long long mod_inv(long long a, long long mod = MOD) {
  a %= mod;
  if (__gcd(a, mod) != 1) return -1;
  long long b = mod, x = 1, y = 0;
  while (b > 0) {
    long long tmp = a / b;
    a -= tmp * b;
    swap(a, b);
    x -= tmp * y;
    swap(x, y);
  }
  x %= mod;
  if (x < 0) x += mod;
  return x;
}

int main() {
  cin.tie(0); ios::sync_with_stdio(false);
  // freopen("input.txt", "r", stdin);

  int n; cin >> n;
  REP(i, n - 1) {
    int u, v; cin >> u >> v; --u; --v;
    edge[u].emplace_back(v);
    edge[v].emplace_back(u);
  }
  cnt[0] = 1;
  dfs(0);
  long long ans = 0;
  REP(i, n) (ans += mod_inv(cnt[i])) %= MOD;
  FOR(i, 1, n + 1) (ans *= i) %= MOD;
  cout << ans << '\n';
  return 0;
}