#include <iostream>
#include <vector>
using namespace std;
int main()
{
int n, i, a, b;
cin >> n;
if(n == 1){cout << 0 << "\n"; return 0;}
vector<int> adj(n + 1, 0);
for(i = 0; i < n - 1; i++)
{
cin >> a >> b;
adj[a]++;
adj[b]++;
}
int maxx = adj[1];
for(i = 2; i <= n; i++)
maxx = max(maxx, adj[i] - 1);
cout << maxx;
}
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