#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define rep(i, n) for (int i = 0; i < (n); i++)
#define P pair<int, int>

const int MOD = 1e9+7;

vector<int> G[1000005];
int sum[1000005];
vector<int> dist;

void dfs(int v, int d) {
  dist[v] = d;
  for (int nv : G[v]) {
    dfs(nv, d+1);
  }
}

void dfs_sum(int v, int d) {
  sum[v] = d + dist[v];
  sum[v] %= MOD;
  for (int nv : G[v]) {
    dfs_sum(nv, sum[v]);
  }
}

int main() {
  int n;
  cin >> n;
  vector<bool> seen(n, true);
  rep(i,n-1) {
    int a, b;
    cin >> a >> b;
    a--, b--;
    G[a].push_back(b);
    seen[b] = false;
  }

  int r;
  // 根を決定
  rep(i,n) {
    if (seen[i]) r = i;
  }

  const int INF = 1001001001;
  dist.resize(n, INF);
  dfs(r, 0);
  dfs_sum(r,0);

  int ans = 0;
  rep(i,n) {
    ans += sum[i];
    ans %= MOD;
  }
  cout << ans << endl;
  






}