#include <bits/stdc++.h>

using namespace std;

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


vector<ll> G[200010];


int main(){
	cin.tie(nullptr);  ios_base::sync_with_stdio(false);
   ll i,j;

	ll N;
	cin >> N;

	for(i=1;i<N;i++){
		ll a,b;
		cin >> a >> b;
		G[a].push_back(b);
		G[b].push_back(a);
	}


	ll ans=N-1;
	for(i=1;i<=N;i++){
		ll n=G[i].size();
		if(n==0) continue;

		ans+=n*(n-1)/2;

		for(j=0;j<n;j++){
			if(i>G[i][j]) continue;
			ll k=G[i][j];
			ll m=G[k].size();
			ans+=(n-1)*(m-1);
		}
	}


	cout << ans << endl;


	return 0;

}