#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ii pair <int, int>
#define app push_back
#define all(a) a.begin(), a.end()
#define bp __builtin_popcountll
#define ll long long
#define mp make_pair
#define f first
#define s second
#define Time (double)clock()/CLOCKS_PER_SEC
#define debug(x) std::cout << #x << ": " << x << '\n';

const int N = 1e6+7, MOD = 1000 * 1000 * 1000 + 7;

int mod(int n) {
    n %= MOD;
    if (n < 0) return n + MOD;
    else return n;
}   
int fp(int a, int p) {
    int ans = 1, c = a;
    for (int i = 0; (1ll << i) <= p; ++i) {
        if ((p >> i) & 1) ans = mod(ans * c);
        c = mod(c * c);
    }   
    return ans;
}   
int dv(int a, int b) { return mod(a * fp(b, MOD - 2)); }


int cnt[N], dist[N];
bool used[N];
vector <int> g[N];
void dfs(int u) {
    used[u] = 1;
    for (int v : g[u]) {
        if (!used[v]) {
            dfs(v);
        }   
        cnt[u] += cnt[v];
        dist[u] += dist[v];
        cnt[u] = mod(cnt[u]);
        dist[u] = mod(dist[u]);
    }   
    dist[u] += cnt[u];
    ++cnt[u];
        cnt[u] = mod(cnt[u]);
        dist[u] = mod(dist[u]);
}   

signed main() {
    #ifdef HOME
    freopen("input.txt", "r", stdin);
    #else
    #define endl '\n'
    ios_base::sync_with_stdio(0); cin.tie(0);
    #endif

    int n;
    cin >> n;
    for (int i = 0; i < n - 1; ++i) {
        int u, v;
        cin >> u >> v;
        g[u].app(v);
    }   

    int ans = 0;
    for (int i = 1; i <= n; ++i) {
        if (!used[i]) {
            dfs(i);
        }    
    }   
    for (int i = 1; i <= n; ++i)
        ans += dist[i];
    ans = mod(ans);
    cout << ans << endl;
}