#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
typedef long long ll;
ll n,m,i,j,k,l,d[400000],t[400000];
vector<ll>g[400000];
void df(ll v){
++t[d[v]];
for(auto i:g[v])
if(d[i]==0)
d[i]=d[v]+1,df(i);
}
int main()
{
cin>>n;
for(k=1;k<n;k++)
cin>>i>>j,g[i].emplace_back(j),g[j].emplace_back(i);
d[1]=1;
df(1);
for(i=2;i<=n+1;i++)
t[i]+=t[i-1],m=max(m,(t[i]+i-3)/(i-1));
cout<<m;
}
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