#include <iostream>
#include <vector>

// https://www.geeksforgeeks.org/combinatorics-ordered-trees/

using namespace std;

const long long mod = 1000000007;

vector<int> g[100000];
long long F[100001];
long long IF[100001];
long long inv[100001];
int L;

void dfs(int u, int p) {
    bool l = true;
    for (int v : g[u]) if (v != p) {
        dfs(v, u);
        l = false;
    }
    L += l;
}

long long C(int n, int r) {
    if (n < 0 || r < 0 || n < r) return 0;
    return F[n] * IF[r] % mod * IF[n - r] % mod;
}

int main() {
    int n;
    cin >> n;
    for (int i = 0; i < n - 1; i++) {
        int u, v;
        cin >> u >> v;
        u--; v--;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    dfs(0, -1);
    inv[1] = 1;
    for (int i = 2; i <= n; i++) {
        inv[i] = inv[mod % i] * (mod - mod / i) % mod;
    }
    F[0] = 1;
    IF[0] = 1;
    for (int i = 1; i <= n; i++) {
        F[i] = F[i - 1] * i % mod;
        IF[i] = IF[i - 1] * inv[i] % mod;
    }
    cout << C(n - 1, L) * C(n - 1, L - 1) % mod * inv[n - 1] % mod << endl;
}