#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;

int N;
ll v[202020];
pair<ll, ll> e[202020];

int main(void){
  cin >> N;
  for (int i = 0; i < N - 1; i++) {
    cin >> e[i].first >> e[i].second;
    e[i].first--, e[i].second--;
    v[e[i].first]++;
    v[e[i].second]++;
  }
  ll ans = N - 1;
  for (int i = 0; i < N; i++) {
    ans += v[i] * (v[i] - 1) / 2;
  }
  for (int i = 0; i < N - 1; i++) {
    ans += (v[e[i].first] - 1) * (v[e[i].second] - 1);
  }
  cout << ans << endl;
  return 0;
}