#include<iostream>
#include<cstdio>
#include<algorithm>
#include<cmath>
#include<string>
#include<vector>
#include<list>
#include<set>
#include<map>
#include<queue>
#include<stack>
#include<cctype>
#include<climits>
#include<bitset>
#define ld long double
#define ll long long int
#define ull unsigned long long int
#define rep(i,n) for(i=0;i<n;i++)
#define fin(ans) cout<<(ans)<<endl
#define INF INT_MAX;
using namespace std;
template<class T> inline bool chmax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
template<class T> inline bool chmin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
const long long LLINF=1LL<<60;
//set<int>::iterator it;



int main(void){ios::sync_with_stdio(false);cin.tie(0);
//////////////////////////////////////////////////////
	
	int i,n,a,b;
	cin>>n;
	int num[n]={0},oe[2]={0};
	for(i=1;i<=n-1;i++){
		cin>>a>>b;
		num[a-1]++;
		num[b-1]++;
	}
//	cout<<11111<<endl;
	for(i=0;i<n;i++){
		if(num[i]%2==0)oe[1]++;
		else oe[0]++;
	}
//	cout<<num[0]<<num[1]<<num[2]<<num[3]<<endl;
	int ans=0;
	while(oe[0]!=0&&oe[0]!=2){
		oe[0]-=2;
		ans++;
	}
	cout<<ans<<endl;
	
//////////////////////////////////////////////////////
	return 0;
}