#define _USE_MATH_DEFINES
#include <cstdio>
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <complex>
#include <string>
#include <vector>
#include <array>
#include <list>
#include <queue>
#include <stack>
#include <set>
#include <map>
#include <bitset>
#include <numeric>
#include <limits>
#include <climits>
#include <cfloat>
#include <functional>
#include <iterator>
#include <memory>
#include <regex>
using namespace std;

void mod_inverse(int n, vector<long long>& inv, int mod)
{
    inv.assign(n+1, -1);
    inv[1] = 1;
    for(int i=2; i<=n; ++i)
        inv[i] = inv[mod % i] * (mod - mod / i) % mod;
}

class FactorialCalculation
{
private:
    const int mod;
    vector<long long> factorial;
    vector<long long> invFactorial;
public:
    FactorialCalculation(int n, int mod) : mod(mod)
    {
        factorial.resize(n+1, 1);
        invFactorial.resize(n+1, 1);
        vector<long long> inv;
        mod_inverse(n, inv, mod);
        for(int i=1; i<=n; ++i){
            factorial[i] = factorial[i-1] * i % mod;
            invFactorial[i] = invFactorial[i-1] * inv[i] % mod;
        }
    }
    long long getFactorial(int n){
        return factorial[n];
    }
    long long getInvFactorial(int n){
        return invFactorial[n];
    }
    long long getPermutation(int n, int r){
        if(n < r)
            return 0;
        return factorial[n] * invFactorial[n-r] % mod;
    }
    long long getCombination(int n, int r){
        if(n < r)
            return 0;
        return getPermutation(n, r) * invFactorial[r] % mod;
    }
    long long getHomogeneous(int n, int r){
        return getCombination(n+r-1, r);
    }
};

void dfs(const vector<vector<int> > edges, int curr, int prev, int d, vector<int>& depth)
{
    depth[curr] = d;
    for(int next : edges[curr]){
        if(next != prev)
            dfs(edges, next, curr, d+1, depth);
    }
}

const int MOD = 1000000007;

int main()
{
    int n;
    cin >> n;
    vector<vector<int> > edges(n);
    for(int i=0; i<n-1; ++i){
        int u, v;
        cin >> u >> v;
        -- u;
        -- v;
        edges[u].push_back(v);
        edges[v].push_back(u);
    }

    vector<int> depth(n);
    dfs(edges, 0, -1, 0, depth);

    FactorialCalculation fc(n, MOD);
    long long ans = 0;
    for(int i=0; i<n; ++i){
        long long tmp = fc.getCombination(n, depth[i] + 1);
        tmp *= fc.getFactorial(depth[i]);
        tmp %= MOD;
        tmp *= fc.getFactorial(n - depth[i] - 1);
        tmp %= MOD;
        ans += tmp;
        ans %= MOD;
    }
    cout << ans << endl;

    return 0;
}