#include <bits/stdc++.h>
using namespace std;
#define N 300005
vector<int>adj[N];
int dist[N];
void bfs(int i)
{
queue<int>Q;
Q.push(i);
while(!Q.empty())
{
const int s=Q.front();
Q.pop();
for(const auto v:adj[s])
{
if(dist[v]==0)
{
dist[v]=dist[s]+1;
Q.push(v);
}
}
}
}
int main()
{
int n;
cin>>n;
int x,y;
int maxim=0;
for(int i=1;i<n;i++)
{
cin>>x>>y;
adj[x].push_back(y);
if(adj[x].size()>maxim)
{
if(x==1)maxim=adj[x].size();
else maxim=adj[x].size()-1;
}
adj[y].push_back(x);
if(adj[y].size()>maxim)
{
if(x==1)maxim=adj[y].size();
else maxim=adj[y].size()-1;
}
}
// dist[1]=1;
// bfs(1);
// dist[n+1]=0;
// int maxim=1;
// int cnt=1;
// for(int i=3;i<=n+1;i++)
// {
// if(dist[i]==dist[i+1])cnt++;
// else
// {
// maxim=max(cnt,maxim);
// cnt=1;
// }
// }
cout<<maxim;
return 0;
}
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