#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
#define REP(i, n) for(int i=0; i<n; i++)
#define REPi(i, a, b) for(int i=int(a); i<int(b); i++)
#define MEMS(a,b) memset(a,b,sizeof(a))
#define mp make_pair
#define MOD(a, m) ((a % m + m) % m)
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
const ll MOD = 1e9+7;

vector<int> G[100100];

void dfs(int v, int p, vector<vector<ll>>& dp){
    dp[v][0] = 1;
    dp[v][1] = 0;

    for(auto& nv : G[v]){
        if(nv == p) continue;
        dfs(nv, v, dp);
        dp[v][0] += max(dp[nv][0]-1, dp[nv][1]);
        dp[v][1] += max(dp[nv][0], dp[nv][1]);
    }
}

int main(){
    int N;
    cin >> N;
    REP(i,N-1){
        int u, v;
        cin >> u >> v;
        u--, v--;
        G[u].push_back(v);
        G[v].push_back(u);
    }

    vector<vector<ll>> dp(N, vector<ll>(2));
    dfs(0, -1, dp);

    ll ans = max(dp[0][0], dp[0][1]);
    cout << ans << endl;
    return 0;
}