#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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