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

#define ll long long

const int MAXN = 1e5+5;

//vector<int> adj[MAXN];
int w[MAXN];

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);

	int n; cin >> n;
	for (int i = 0; i < n - 1; ++i) {
		int u, v; cin >> u >> v;
		//adj[u].push_back(v);
		//adj[v].push_back(u);
		w[u]++;
		w[v]++;
	}
	if (n == 2) {
		cout << 1 << "\n";
		return 0;
	}

	int cnt = 0;
	for (int i = 1; i <= n; ++i) {
		if (w[i] == 1) cnt++;
	}
	cout << n - cnt << "\n";

	return 0;
}