#include<bits/stdc++.h>
using namespace std;
const int N = 3e5;
vector <int> e[N];
int main(){
int n;
cin>>n;
for(int i = 0;i < n - 1;i++){
int u, w;
cin>>u>>w;
u--;w--;
e[u].push_back(w);
e[w].push_back(u);
}
int ans = 0;
ans = max(ans, (int)e[0].size());
for(int i = 1;i < n;i++){
ans = max(ans, (int)e[i].size() - 1);
}
cout<<ans<<'\n';
return 0;
}
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