#include <bits/stdc++.h>
using namespace std;
vector<int>adj[300001];
int ans=0;
void dfs(int x,int p)
{
int cnt=0;
for(int i=0;i<adj[x].size();i++)
{
if(adj[x][i]!=p)
{
cnt++;
dfs(adj[x][i],x);
}
}
ans=max(ans,cnt);
}
int main()
{
int n;
cin>>n;
for(int i=0;i<n-1;i++)
{
int a,b;
cin>>a>>b;
adj[a].push_back(b);
adj[b].push_back(a);
}
dfs(1,-1);
cout<<ans;
return 0;
}
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